Copyright 1984-2001 FileMaker, Inc. HBAM2016AUG95HPro 5.0`{solifluction@middleandlatejurassic@kbars@delta@`extensive@hills@?interpretation@^multiple@slopes@tvolcanicavalanchedepositsconsistingofpoorlysortedmixt@W Ã@Y@E Z |D{‚pR @w @tconsistsofbasaltflowsbrecciasandafewsandytuffs@Fnortheast@sf1@@.E Z |€3@J€R@T€A': KEAFCGD FIKJ_KmLvMBNDONPBQGRLSQTVUAVCW XH KZ B[F\Y H^Y_A`CaCbJcPd@fe] FhKi_jmkvl}mBnDoFp2rqFsKtQuVv[w`xByg@bHBAM3016AUG95@asbpt{btbu݂dieastWfWgraySVgreen!W"WQThvjWjfVjcfgjcpdejcthijdjgjgdjn[\jnccjnpabjns_`jnss]^jqdjqmjqujsYZjsmjtkxWjteastVjtblmjtcpqjtfrsjtgtujthjtkzjtkhjtkmjtkpjtku|~jtojtrvwjtrpjttnojtujju1jv}kd4ki126kjm-./kjuykjv8kk+km0kpm,kpmc3kpms2ku5>?kv79:qds@AadqdtGJqe>qeoqes7qetqfqfl#qfsqftqglfBqgnikqgtV_qgtnU[qida4qifn3qifv2qilqkqkoqktql6qlbCDqlc qld?qlsqlv&qm$EWqmh\]qmiNQqnmqnkuwqnmyzqno|}qnsrs`Wm  RA ABCDEFGHI J K L M N&F! 9" 9"$IH Pro 5.0 - 5.5 A  BC:\Program Files\Claris Corp\Claris\ USENGLSH.MPRCC:\Program Files\Claris Corp\Claris\USER.UPRLJ D^"M1,,./: AM PM AMYyTtNnFfNFMPROCOMSP^SundayMondayTuesday WednesdayThursdayFridaySaturdayJanuaryFebruaryMarchAprilMayJuneJulyAugust SeptemberOctoberNovemberDecemberQ1Q2Q3Q4 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter,  , X5 ^#< u*q 12/26/2007@AGECLASS DESCRIPTIONFOSSILLABEL MAP UNITNSACLASS NSAMOD QCLASS QUADRANGLE RADIOMETRIC AGE ROCK CLASS SOURCE UNIT NAME            DAMap unitB A Unit nameB AAgeB GM QuaternaryA DescriptionB GAFossilB ARadiometric ageB ASourceB GMJU011EAClassB  A QuadrangleB GMJuneau ]`@@@A Layout #1@@3A Layout #2@@ APrinter@@AImporter@@A Long view@@$ABig text@@ATable @@A Description @@A GSA color @@A Age table @@AQ-code@@A Rock ages        A Layout #1B$$$$@A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PM  A Rock classB GMUnconsolidated ANSAclassB  ALabelB  ANSAmodB GAQclassB GsA Layout #2B @*A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PM PD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PM I $,.YesNo/,  , : AM PMJ  K  L  M  N  O  P  Q  R  S $,.YesNo/,  , : AM PMT  U $,.YesNo/,  , : AM PMV  W $,.YesNo/,  , : AM PMX    A)J)*;-I:<M?gLNQ@^^B 1#*0 2C5>C DU GET Vh  YEf l}oO}  C U YJ Rock classK QuadrangleLSourceMRadiometric ageNFossilO DescriptionPAgeQ Unit nameRMap unitTClassVNSAclassXNSAmod @B#"{@B#"{@A0 0B#"{@      @@B s@ A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PM RC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PM UH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMK $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PM A%xx%%hh%%XX%%HH% %8  8%  Bj%   %F   X @BBA              6    qAPrinterB%$$$$@A   $,.YesNo/,  , : AM PMB   $,.YesNo/,  , : AM PMC   $,.YesNo/,  , : AM PMD   $,.YesNo/,  , : AM PME   $,.YesNo/,  , : AM PM  PF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PM K $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PMM  N  O  P  Q  R  S  T  U  V  W  X  Y[ $,.YesNo/,  , : AM PM] $,.YesNo/,  , : AM PM _ $,.YesNo/,  , : AM PMb $,.YesNo/,  , : AM PMd $,.YesNo/,  , : AM PMe  gh $,.YesNo/,  , : AM PMi  j $,.YesNo/,  , : AM PMV A$q6&54g<qN"=4JiTqf"UQbilt"m.zjv'KkBv='oDyVD1Rqbytc8qp qn  EW7  GT+jVvMLabelNNSAclassO Quadrangle P Rock classQClassRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap uniteNSAmod'A "i. @B#"{@B#"{@AB !BB#"{@.`"c<$D  /co%-+j& '/1=(/ =&)/=*MLabelNNSAclassO Quadrangle P Rock classQClassRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap uniteNSAmod'A "i. @B#"{@B        "          "        " rAImporterB%$$$$@A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PM PF   $,.YesNo/,  , : AM PMG   $,.YesNo/,  , : AM PMH   $,.YesNo/,  , : AM PMI   $,.YesNo/,  , : AM PMJ   $,.YesNo/,  , : AM PM K   $,.YesNo/,  , : AM PML   $,.YesNo/,  , : AM PMM   N  O   P   Q   R   S   T   U   V   W   X   Z  $,.YesNo/,  , : AM PM[  \ $,.YesNo/,  , : AM PM]  A$V0S$&3K1U=R1$=J?WKT?:KLNViNZKlYxVl5xNB{XU{M+dp, eqs,  t%1,  &2 CBN, CR3?, 3B R^, /S_}~~XvxMClassNQclassONSAclassP Rock classQ QuadrangleRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap unit[NSAmod]Label @B#"{@B#"{@A8 8B$#"{@             !#sA Long viewB%$$$$@A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PM! I $,.YesNo/,  , : AM PMJ  K  L  M  N  O  A+<.I<=N1@HMQ2T=a} : ( B' Bj  ?} XJ Rock classK QuadrangleLSourceM DescriptionN Unit nameOMap unit @   B#"{@B#"{@A B#"{@   &(rABig textB@% @9A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PM$ PF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PM#% KK $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PMM  N  O  P  Q  R  S  T  U  V  W  X  $& A6qH85FgNq`"O4\ifqx"gQti~t4'.jAw^(BLOlBfw(erpz2rz9qq0n    !+.j%" C)r  )q   MLabelNNSAclassO Quadrangle P Rock classQClassRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap unit @B#"{@B#"{@A0 0B#"{@            78AtomskeyB @A $,.YesNo/,  , : AM PMB  O $,.YesNo/,  , : AM PMP  U $,.YesNo/,  , : AM PMV  YZ $,.YesNo/,  , : AM PM") PF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PM(* K $,.YesNo/,  , : AM PMM N O P Q R S T U V W X Y[ $,.YesNo/,  , : AM PM] $,.YesNo/,  , : AM PM_ $,.YesNo/,  , : AM PM)+ b $,.YesNo/,  , : AM PMfg $,.YesNo/,  , : AM PMi $,.YesNo/,  , : AM PMj kl $,.YesNo/,  , : AM PMm $,.YesNo/,  , : AM PM*, n $,.YesNo/,  , : AM PMopq $,.YesNo/,  , : AM PMr s $,.YesNo/,  , : AM PMt $,.YesNo/,  , : AM PMu v $,.YesNo/,  , : AM PM+- aw $,.YesNo/,  , : AM PMx y $,.YesNo/,  , : AM PMA$q7n$%8e<qO";$OgTqg"RMfhlt"i }iv'Ek,. Bv='oDdWDX\b_ubvV qn  EX  DX  mCbv1  aubv ~. f 2d"+ &. '-/ DI\%) I]*br +f0 , ~.  -/{ . ;   ;/ ; C, E0F'120'38'4|5('6bow7b=vh8cv,9 MLabel.0 jNNSAclassO Quadrangle P Rock classQClassRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap unitA&AjNSAmod+A!"#o Description0A(*+-r Minimum ageu Maximum agexQclass @B#"{@B#"{@AJ  $%&'),./0JB#"{@      .0  "# !  *-(+' @@$B s@A $,.YesNo/,  , : AM PM/1 RB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMF $,.YesNo/,  , : AM PM02 RG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMK $,.YesNo/,  , : AM PM13 RL $,.YesNo/,  , : AM PMN $,.YesNo/,  , : AM PMO $,.YesNo/,  , : AM PMP $,.YesNo/,  , : AM PMQ $,.YesNo/,  , : AM PM24 RR $,.YesNo/,  , : AM PMS $,.YesNo/,  , : AM PMT $,.YesNo/,  , : AM PMU $,.YesNo/,  , : AM PMV $,.YesNo/,  , : AM PM35 W $,.YesNo/,  , : AM PMX $,.YesNo/,  , : AM PMY $,.YesNo/,  , : AM PMZ $,.YesNo/,  , : AM PM46 A)x x))hh))XX))HH))8  8)  B) )F  F) ))'') ))))57 C )) B  B)   )   ) }  @BBA2 2                      .06' Q#!"-(*+';lATableBB% @A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMU[  [ $,.YesNo/,  , : AM PMA)x  x) ){ {) )k k) )[ [) )K   K)   BE A DescriptionB_ @A $,.YesNo/,  , : AM PMff̙B C $,.YesNo/,  , : AM PMff̙D E $,.YesNo/,  , : AM PMff̙F G $,.YesNo/,  , : AM PMff̙H I $,.YesNo/,  , : AM PMff̙J 8< pH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ  K  L  O  P  Q  R  S $,.YesNo/,  , : AM PMT  V $,.YesNo/,  , : AM PMW  X;= Y $,.YesNo/,  , : AM PMZ $,.YesNo/,  , : AM PM[ $,.YesNo/,  , : AM PM\ $,.YesNo/,  , : AM PM]  <> A)I)*=-H:QbTpactfIsL^O7]| B/@ 3I@ #  K" ar dNr|U;1 B=? C ju'qJ Rock classK QuadrangleLSourceO DescriptionPAgeQ Unit nameRMap unitTNSAclassWClassA]label @B#"{@Bt#"{@A* *B#"{@   @@B s@ A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PM>@ RC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PM?A RH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMK $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PM@C M $,.YesNo/,  , : AM PMA%JJ%%MM%  %  % %  %/  /%z z%  B%j j%%Z @BBA   C:                 AB C  GIs A GSA colorB  @8A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PM:F  K $,.YesNo/,  , : AM PMff̙L M $,.YesNo/,  , : AM PMff̙N O $,.YesNo/,  , : AM PMff̙P Q $,.YesNo/,  , : AM PMff̙R S $,.YesNo/,  , : AM PMff̙T VEG  A6PK6 IEHPtLH [E{OL{+D5JJ5HQ F B1  0 T0  .I9s<"5O7ELg5/AFD  Cm]  m]m] ~BMap unitD Unit nameFAgeHSourceJClassL QuadrangleNNSAclassP DescriptionR descriptionTsourcesVMain @BfBA. .B     XY ANora'sBB @ A $,.YesNo/,  , : AM PM̙B C $,.YesNo/,  , : AM PM̙D E $,.YesNo/,  , : AM PM̙F G $,.YesNo/,  , : AM PM̙H I $,.YesNo/,  , : AM PM̙J DJ P F $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMIK  K $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PMM N O P Q R S T U V W X Y[ $,.YesNo/,  , : AM PM] $,.YesNo/,  , : AM PMJL  _ $,.YesNo/,  , : AM PMb $,.YesNo/,  , : AM PMfg $,.YesNo/,  , : AM PMi $,.YesNo/,  , : AM PMj kl $,.YesNo/,  , : AM PMKM  m $,.YesNo/,  , : AM PMn $,.YesNo/,  , : AM PMopq $,.YesNo/,  , : AM PMr s $,.YesNo/,  , : AM PMt $,.YesNo/,  , : AM PMu LN a v $,.YesNo/,  , : AM PMw $,.YesNo/,  , : AM PMx A$q7$%8e<qO";$OgTqg"RMfhlt"i }iv'EkM\  Bv='oDdWDX\b_ubvV qn  EX  DX  mCcw4  bwdw# bv ~. f   2d "+ &\P MLabel.  'I\%) I]*br +f0 !, ~. !-/{ !. ;   ;/ ;E E. 0G(120(38(4|5((6cnv7b6va8 MLabelOQ p NNSAclassO Quadrangle P Rock classQClassRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap unitA&AjNSAmod+A"#$o Description0A)+,.r Minimum ageu Maximum agexQclass @B#"{@B#"{@fAJ  !%&'(*-/0JB#"{@      /  #$ "! +.),( @@B s@A $,.YesNo/,  , : AM PMPR R B $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMF $,.YesNo/,  , : AM PMQS R G $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMK $,.YesNo/,  , : AM PMRT  L $,.YesNo/,  , : AM PMN $,.YesNo/,  , : AM PMO $,.YesNo/,  , : AM PMP $,.YesNo/,  , : AM PMP $,.YesNo/,  , : AM PMSU R Q $,.YesNo/,  , : AM PMR $,.YesNo/,  , : AM PMS $,.YesNo/,  , : AM PMT $,.YesNo/,  , : AM PMU $,.YesNo/,  , : AM PMT9 R V $,.YesNo/,  , : AM PMW $,.YesNo/,  , : AM PMX $,.YesNo/,  , : AM PMY $,.YesNo/,  , : AM PMZ $,.YesNo/,  , : AM PM Cc(uq  gtz(p  ~ +# b.`"c<$D  /co%-+j& '/1=( / =&)/=*[X   @BBfA4 4                                   WH    /$"#).+,H^p A Age tableBB   @A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PM|    XH @YH^Y_A`CaCbJcPd@fe] FhKi_jmkvl}mBnDoFp2rqFsKtQuVv[w`xByDzuVv[w`xByDzxByDz9W A B)  )Y   Y) ) )gg))**)))C8)   )  )   ) E  E)   )  NO  D.  'I\%) I]*br +f0 !, ~. !-/{ !. ;   ;/ ;E E. 0G(120(38(4|5((6cnv7b6va8 ehp AQ-codeB   @@A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMY_ p H $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ  K  L  O  P  Q  R  S $,.YesNo/,  , : AM PMT  V $,.YesNo/,  , : AM PMW  X^`  Y $,.YesNo/,  , : AM PMZ $,.YesNo/,  , : AM PM[ $,.YesNo/,  , : AM PM\ $,.YesNo/,  , : AM PM]  _a  A)I)*=-H:QbTpactfIsH B/@ 3I@ #  K" @Q CQQUY8. \?m`b  C\mg]rn$qJ Rock classK QuadrangleLSourceO DescriptionPAgeQ Unit nameRMap unitTNSAclassWClassA]label @B#"{@Bt#"{@A* *B#"{@  @@B s@A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMac R C $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMbd R J $,.YesNo/,  , : AM PMK $,.YesNo/,  , : AM PMM $,.YesNo/,  , : AM PMN $,.YesNo/,  , : AM PMO $,.YesNo/,  , : AM PMcf  P $,.YesNo/,  , : AM PMA%JJ%%B  B% % %P P%%  %   %  B% %% @BBA   f]                  de C  } ADominantBB   @A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PM]i P F $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMhj  K $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PMM N O P Q R S T U V W X Y[ $,.YesNo/,  , : AM PM] $,.YesNo/,  , : AM PMik  _ $,.YesNo/,  , : AM PMb $,.YesNo/,  , : AM PMfg $,.YesNo/,  , : AM PMi $,.YesNo/,  , : AM PMj kl $,.YesNo/,  , : AM PMjl  m $,.YesNo/,  , : AM PMn $,.YesNo/,  , : AM PMopq $,.YesNo/,  , : AM PMr s $,.YesNo/,  , : AM PMt $,.YesNo/,  , : AM PMu km x v $,.YesNo/,  , : AM PMw $,.YesNo/,  , : AM PMx yfz $,.YesNo/,  , : AM PMf{ $,.YesNo/,  , : AM PMf| $,.YesNo/,  , : AM PMfln M } $,.YesNo/,  , : AM PMf $,.YesNo/,  , : AM PMfA$q7$%8e<qO";$OgTqg"RMfhlt"i }iv'Ekmo  Bv='oDdWDX\b_ubvV qn  EX  DX  mCcw4  bwdw# bv ~. f 2d"/A &np  D1?'I\%) I]*Ef +Hj]!, H[ !-G\}!. ;   ;/ ;E D- 0O(126(3<(4}5)(6cnv7b6va8- or  F90]1:1;`1< 1=1? MLabelNNSAclassO Quadrangle P Rock classQClassRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap unitA&AjNSAmod+A"#$o Description0A)+,.r Minimum ageu Maximum agexQclass9A 23456 @B#"{@B#"{@fAL  !%&'(*-/01LB#"{@      /  #$ "! +.),( rs m @@B s@ A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMpq< 243651 qt R F $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMsu R K $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PMN $,.YesNo/,  , : AM PMO $,.YesNo/,  , : AM PMP $,.YesNo/,  , : AM PMtv R Q $,.YesNo/,  , : AM PMR $,.YesNo/,  , : AM PMS $,.YesNo/,  , : AM PMT $,.YesNo/,  , : AM PMU $,.YesNo/,  , : AM PMuw R V $,.YesNo/,  , : AM PMW $,.YesNo/,  , : AM PMX $,.YesNo/,  , : AM PMY $,.YesNo/,  , : AM PMZ $,.YesNo/,  , : AM PMvx R [ $,.YesNo/,  , : AM PMf\ $,.YesNo/,  , : AM PMf] $,.YesNo/,  , : AM PMf^ $,.YesNo/,  , : AM PMf_ $,.YesNo/,  , : AM PMfwy  ` $,.YesNo/,  , : AM PMA)x  x) ){ {) )k k) )[ [) )K   K)   xz  B)  )Y   Y) )  )g g) )* *) ) )8 C8) ) ) s  s)  ) c  c)   ) S  S)   )   ) a y}  DD a)   @BBfA> >                      /24356$"#.kvd@kvp@,qnt@tgc@alaskan@alluvial@areas@ybeach@chisik@=complex@creek@debrisflowdeposits@3delta@depositsofmasswastinglandslidedeposits@ estuarine@flat@glacial@glacialdepositsoutwashfans@glacialdepositsundifferentiatedglacialdrift@granodiorite@ice@+kenai@maficandultramaficplutonicrocks@maficdikessillsandplugs@modern@moraineonice@mudflow@naknekformationsnugharborsiltstonemember@:ophioliteofglacierislandvolcaniclasticrocks@orcagroupmassivesandstoneandrythmitesplithofaciesba@xorcagroupsedimentaryrocksundivided@aotherunconsolidateddepositsswampandmuskeg@outwashdeposits@prior@quartzmonzonite@zrythmite@salt@isedimentaryhsedimentaryrocksundividedpoulcreekformation@Gn@Z{  }g@FK_mv}ACEjCHMRW\AC €I€A€A€B€D€B€C€D€DJN BBBDC$D)J.D1A6D:K?DBBFDKBPDUBZB^DaAfD kDpDuDyA~GABI#D&A*)A-,A0/D2D5F8D9G<DCDDJFCHBJIAQPERAWVA\[@cAgfAnmApoDuIvzg $ )+, DstrikeWstringersOWstronglyWWW(WHWIWstructuralWstructureWstructuresWWWWW7W;W<W=Wstudied;W=WstudyWWWWsub-dividedWsub-marineWWWsub-tidalWsubaerialWsubbituminouosWsubdividedWfWjWsubduedWW&WCWsubequalWsubjectedWWsubmarineWWWWWsubmarine-fanWsubmergedWsubophiticW!WsubordinateWWWWWWWWWWWWWsubparallelWWsubsequentWsuccessive0W1WsuchWWWWWWWWW7WsuggestWW W(WHWIWsuggestiveWWsuperglacialNWQWsuperglacialandendglacialtillonpresentglaciersNVQVsupra-tidal7WsupraglacialOWsupraglacialmoraineunweatheredpoorlysorteddebrisonsurOVsurfacePW1W>W?WWWWW0W1WHWKWS   P#   P##wr @ @P@ MARIA A!!Y@~~Ã!@Ã`@ÄB@ąCb@ bethel@cape@goodnewsbay@inlet@islandislands@kuskokwim@saintmatthew@p sedimentary@ Ã"piÄ9C@VÄI @cdCec ABCDEFGHI J K L M N ܂݂ނ߂ႀ₀む䂀傀悀炀肀邀ꂀ낀삀킀  !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~‚ÂĂłƂǂȂɂʂ˂̂͂΂ςЂт҂ӂԂՂւׂ؂قڂۂ܂݂ނ߂ႁ₁め䂁傁悁炁肁邁ꂁ낁삁킁 ~‚DPredominantly layered, variably serpentinized dunite containing rare to locally abundant layers of chromitite and pyroxenite and fault slices of garnet pyroxenite and serpintinite. Associated with McHugh Complex as fault-bounded bodies.GSV002H110ISeldoviaJIgneousK4890‚ATrmBMetamorphic rocks, undividedCLate(?) TriassicD|Metalimestone, argillite, quartzite, metatuff, greenstone, and phyllite; may in part be equivalent to the Kamishak FormationGKN005H530IKenaiJ MetamorphicK5220‚AasB AmphiboliteCEarly Mesozoic(?)D/Amphibolite, locally includes sedimentary rocksGKN009H906IKenaiJ MetamorphicK5220@K2707GHIZEF BD  D I A CCHA FK_ACV@@FKACI B!F#K$A%C&"F(K)b*n+w,B-D.N/B0G1L2R3W4A5C67'@8H;Y<A=C>C?H@MA@CB: KEAFCGD FIKJ_KmLvMBND\@ONPBQGRLSQTVU[9B[@W]@WWH KZ B[F\Y H^Y_A`CaCbJcPd@fe] FhKi_jmkvl}mBnDoFp2rqFsKtQuVv[w`xByDzgpA Rock agesB   @?A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PMC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PM~A AzHHzA@Gould H - HP LJ 5M (lj5m1)4C odXXLetterDINU"4A1 BA{d‚IK270730Group, graywacke, siltstone, and conglomerate~E Pro 2.0 - 2.1€AJQuB;Glacial deposits and volcanic and plutonic rocks, undividedC!Quaternary, Tertiary to JurrassicD;Glacial deposits and volcanic and plutonic rocks, undividedGKN007H705IKenaiJIgneousK99N99€AbuB%Possible bedrock of unknown characterCUnknownDAreas that air photo interpretation suggest as being underlain by bedrock. Typically are of higher elevation than surrounding glacial deposits and show hints of structure. In one case, an apparent strike and dip of bedding is perceptible on air photos.GKN008H899IKenaiJ SedimentaryK99N99€AbuBBedrock, undividedC!Quaternary, Tertiary to JurrassicDBedrock, undividedGKN007H99IKenaiK99N99€AQsBSurficial depositsCHolocene and PleistoceneDSurficial depositsGSV002H82ISeldoviaJUnconsolidatedK100N1000€AQsBSurficial depositsCHolocene and PleistoceneDSurficial depositsGKN002H100IKenaiJUnconsolidatedK100N1000€AQsBSurficial depositsCHolocene and PleistoceneDSurficial depositsGKN003H3100 PF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PMH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PM K $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PMM  N  O  P  Q  R  S  T  U  V  W  X  Y[ $,.YesNo/,  , : AM PM] $,.YesNo/,  , : AM PM _ $,.YesNo/,  , : AM PMb $,.YesNo/,  , : AM PMfg $,.YesNo/,  , : AM PMi $,.YesNo/,  , : AM PMj  kl $,.YesNo/,  , : AM PM m $,.YesNo/,  , : AM PMn $,.YesNo/,  , : AM PMo  pq $,.YesNo/,  , : AM PMr  s $,.YesNo/,  , : AM PMt $,.YesNo/,  , : AM PMu   xv $,.YesNo/,  , : AM PMw $,.YesNo/,  , : AM PMx  yfz $,.YesNo/,  , : AM PMf{ $,.YesNo/,  , : AM PMf| $,.YesNo/,  , : AM PMf } $,.YesNo/,  , : AM PMf~ $,.YesNo/,  , : AM PMf $,.YesNo/,  , : AM PMf Ar131f3qE"2-DgHqZ"FQXh^s![(mht%GiBs$ld$4$\(a:(8:X qn  $  $ c C(:6  (:(:%  (: >9s& BqT BV BT B=To "w9( &D{<$ '$%) $*<) +? !,  !-  !. ;   ;/ ; E .CD, 0/EA(1.2/A.(3/6A(4.5/A&(6(p:7(=:c8TB+ FJ9 UGg1: Ug%1;  U*gh1<  Ulg1=  Ug1>  Ug1?  MLabelNNSAclassO Quadrangle P Rock classQClassRSourceSRadiometric ageTFossilU DescriptionVAgeW Unit nameXMap unitA&A jNSAmod+A"#$o Description0A)+,.r Minimum ageu Maximum agexQclass9A 234567 @B#"{@B#"{@fAL  !%&'(*-/01LB#"{@       /  #$ "! +.),( 2 3 4 5 671 @@B s@ A $,.YesNo/,  , : AM PMB $,.YesNo/,  , : AM PM RC $,.YesNo/,  , : AM PMD $,.YesNo/,  , : AM PME $,.YesNo/,  , : AM PMF $,.YesNo/,  , : AM PMG $,.YesNo/,  , : AM PM RH $,.YesNo/,  , : AM PMI $,.YesNo/,  , : AM PMJ $,.YesNo/,  , : AM PMK $,.YesNo/,  , : AM PML $,.YesNo/,  , : AM PM RM $,.YesNo/,  , : AM PMN $,.YesNo/,  , : AM PMO $,.YesNo/,  , : AM PMP $,.YesNo/,  , : AM PMQ $,.YesNo/,  , : AM PM RR $,.YesNo/,  , : AM PMS $,.YesNo/,  , : AM PMT $,.YesNo/,  , : AM PMU $,.YesNo/,  , : AM PMV $,.YesNo/,  , : AM PM RW $,.YesNo/,  , : AM PMX $,.YesNo/,  , : AM PMY $,.YesNo/,  , : AM PMZ $,.YesNo/,  , : AM PM[ $,.YesNo/,  , : AM PMf U\ $,.YesNo/,  , : AM PMf] $,.YesNo/,  , : AM PMf^ $,.YesNo/,  , : AM PMf_ $,.YesNo/,  , : AM PMf` $,.YesNo/,  , : AM PMf A'x  x' '{ {' 'k k' '[ [' 'K   K'   B'  'Y   Y' '   'gg''**''' C '  '  '   ' E  E'   '   '   '    ' p    p' Dv   ' 3    3' ~   @ @BBfA@ @         U                  /"$#)+,.23456 7  !@A!VDEF(LIST8LISTA8Sedimentary Igneous Metamorphic Unconsolidated Tectonite8VDEFA((FMRLA  A/FMRLFMRLAA6FMRLFMRLA A7FMRLFMRLA A9FMRLFMRLA A?FMRLFMRLAA:FMRLFMRLA  A?FMRLFMRLA   A<FMRLFMRLA   AQFMRLFMRLA AkeyBrefsClithDdescripEageFqkeyGdomlithHMaplabelJAreaK Radiometric` # MARIA nnsakey.FP3 NAMEA nnsakey.FP5 RPTHA NNSAKEY.FP5 WSPCAD:\Databases\A9FPTHRPTH NAME WSPCMARI FPTHADATA:Databases:nsalith.FP5MARIA nsalith.FP3 NAMEA nsalith.FP5 RPTHA NSALITH.FP5 WSPCAE:\Databases\A1 TRPTH RolyNAME WSPCNAMEA pwdescrp.FP5 RPTHA PWDESCRP.FP5 RolyAWSPCAE:\E.4\PWS\FP5\A1RPTH RolyNAME WSPC NAMEA nsaage.fp5 RPTHA NSAAGE.FP5 RolyAWSPCA E:\DB-5\ A1 RPTH RolyNAME WSPC NAMEA nsaqkey.fp5 RPTHA NSAQKEY.FP5 RolyAWSPCA E:\E.1\DB-5\ RPTHRolyNAMEWSPC NAMEAnsadomlith.fp5RPTHANSADOMLITH.FP5RolyAWSPCA E:\E.1\DB-5\ ;  A1 RPTH RolyNAME WSPC NAMEA nsakey.FP5 RPTHA NSAKEY.FP5 RolyAWSPCA E:\E.1\DB-5\ A1 RPTH RolyNAME WSPCNAMEA pwradio.FP5 RPTHA PWRADIO.FP5 RolyAWSPCAE:\E.4\PWS\FP5\RPTHRolyNAMEWSPCNAMEAkbradiometric.FP5RPTHAKBRADIOMETRIC.FP5RolyAWSPCAE:\E.3\Kusko\ !A!VDEF(LISTILISTAIALT ALT-POT ALT-BIO ALT-SER ALT-ARG HFS HFS-ALB HFS-HBL HFS-PYX HFS-SAN QIVDEFA(( A/FMRLFMRLAA6FMRLFMRLA A7FMRLFMRLA A9FMRLFMRLA A?FMRLFMRLAA:FMRLFMRLA  A?FMRLFMRLA   A<FMRLFMRLA   AQFMRLFMRLA AkeyBrefsClithDdescripEageFqkeyGdomlithHMaplabelJAreaK Radiometric`!ARock class ListB Nsamods list`@  A?FMRLFMRLA  A/FMRLFMRLAA6FMRLFMRLA A7FMRLFMRLA A9FMRLFMRLA A?FMRLFMRLAA7FMRLFMRLA  ARFMRLFMRLA AkeyBrefsClithDdescripEageFqkeyHMaplabelK Radiometric`metric`keyBrefsClithDdescripEageFqkeyHMaplabelJAreaK Radiometric``ClithDdescripEageFqkeyGdomlithHMaplabelJAreaK Radiometric`BUUX  $,.YesNo/,  , : AM PMOHA NSAREFS.FP5 WSPCAH:\NSA\A9FPTHRPTH NAME WSPCMARI FPTHAROCKET2:Databases:nnsakey.FP5MARI70SunMonTueWedThuFriSatJanFebMarAprMayJunJulAugSepOctNovDec+ArialSystemFujiyamaExtraBold Lucida FaxTimes New Roman Helvetica MS Sans SerifLucida HandwritingLucida Calligraphy Arial Narrow Verdana Times Tahoma Courier @    TA1 RPTH RolyNAME WSPCNAMEA pwrefs.FP5 RPTHA PWREFS.FP5 RolyAWSPCAE:\E.4\PWS\FP5\A9FPTHRPTH NAME WSPCMARI FPTHAROCKET2:Databases:nnsakey.FP5MARIMARIMARI FPTHAROCKET2:Databases:nnsakey.FP5MARI-xbedrockundividedVbedsWWWWWWWW/W7W9W:W;W<W=WdWeWlWmWnWoWpWqWbeenWWWWWWW#W(W0W@WBWHWIWbeforeWbeingWbelongingWWWWbelow@WAWaWdWvWxWWWWWWbeltW WbeltsCWDWbeneath W1W>W?Wbering0W1Wbetween0W1WCWDW WW$W%W.W/Wbetweenborderrangesfaultandunnamedfaultmelangeofsil.Vbetweenunnamedfaultandeagleriverthrustfaultmassives/VbiotiteW W WWWWWWWWWWWWWWWW;W=WEWFWLWMWPWlWmWbiotite-hornblendeW6Wbiotite-hornblende-qWbiotite-muscoviteWWWWbiotite-muscovite-chLWMWWJWKWbluffWbluffs>WblyingWWbodiesWWWW#W&WDWGWWWWW€IKenaiJUnconsolidatedK100N1000€AQsB!Unconsolidated surficial depositsCHoloceneAUndifferentiated boulders, cobbles, gravel, sand, silt, and clay of present streams; angular clasts of talus and locally, landslide deposits; stratified sand, silt, and clay of alluvial fan and flood-plain deposits; well-sorted stratified sand and gravel of glaciofluvial origin, including deltaic deposits; unsorted material of morainal deposits; glaical-lake silt, clay, and muskeg deposits; and locally interstratified beach gravel, sand, and clay; Unconsolidated surficial depositsGBS004H3I Blying SoundJUnconsolidatedK100N1000€AQsB!Unconsolidated surficial depositsCHolocene€€AQuBSurficial deposits, undividedCHoloceneAPredominantly alluvium deposited by nonglacial streams and outwash deposited by glacial meltwater. Consists of sand and gravel; terminal, lateral, and ground moraine composed of unsorted deposits of boulders, cobbles, gravel, and sand left by the retreat of alpine, valley, and regional glaciers; and talus and landslide deposits from adjacent bedrock. Also includes less extensive deposits consisting mostly of sand that may be locally abundant and form such features as beaches, spits, offsB_hore bars in coastal areas, and dunes on the Copper River delta. Surficial deposits, undividedMGBS002H100I Blying SoundJUnconsolidatedK100N1000€AQuBSurficial deposits, undividedCHolocene&€AUndifferentiated boulders, cobbles, gravel, sand, silt, and clay of present streams; angular clasts of talus and locally, landslide deposits; stratified sand, silt, and clay of alluvial fan and flood-plain deposits; well-sorted stratified sand and gravel of glaciofluvial origin, including deltaic deposits; unsorted material of morainal deposits; glaical-lake silt, clay, and muskeg deposits; and locally interstratified beach gravel, sand, and clay; Unconsolidated surficial depositsGSR004H3ISewardJUnconsolidatedK100N1000{surficialdepositsVVVsurficialdepositsundifferentiatedVsurficialdepositsundividedVVVVVswamp$W%Wswampdeposits%VtalkeetnaxWzW|W~WWWWWtalkeetnaformationxVzVtalkeetnaformationhornmountaintuffmemberVtalkeetnaformationmarshcreekbrecciamemberVtalkeetnaformationpogibshiformationVtalkeetnaformationportagecreekagglomeratememberVtalkeetnaformationundivided|V~Vtalus W tanyaoWpWterminalGWJWWWterminallateralandgroundmoraineWVterraceW;WterracedepositsVterracedvWxWWWWWWterracedmorainesofcaribouhillsageVterracedmorainesofeklutnaageVVterracedmorainesofknikageVVtertiaryWWtertiarybedrockVVthejWlWVVVVquaternarypleistoceneVVVVV VquaternaryrecentVVVVVWAmoraineWWWWWOWUWVWWW[W\W]W_W`WiWjWkWlWqWtWmorainesGWJW^WgWhW|W}WWWWWWWWWWWWWWWWWmorainesofcaribouhillsglaciationgreatlymodifiedVVmorainesofeklutnaglaciationsubduedandmoderatelymodifiVVmorainesofknikglaciationprominentbutmodifiedVVVW$Wnamed>Wnaptowne?WiWkW|W}Wnatural&Wnaturalleveedepositsondeltaicorfandeltadeposits&VnearWWW<WWWneoglacial^Wneoglacialdepositsofendlateralandgroundmoraineskames^VnewhalenqWnoWnon-sortedWWnonglacialWWWWWnonvegetated*W3Wnonvegetatedbeachdepositsconsistingmainlyofmixedsand*Vnonvegetatedtidalmarshdepositsconsistoforganicmateria3VnortheastWnorthernWnotWnsaWobservedWW€€AQuBSurficial deposits, undividedCHoloceneAPredominantly alluvium deposited by nonglacial streams and outwash deposited by glacial meltwater. Consists of sand and gravel; terminal, lateral, and ground moraine composed of unsorted deposits of boulders, cobbles, gravel, and sand left by the retreat of alpine, valley, and regional glaciers; and talus and landslide deposits from adjacent bedrock. Also includes less extensive deposits consisting mostly of sand that may be locally abundant and form such features as beaches, spits, offsB_hore bars in coastal areas, and dunes on the Copper River delta. Surficial deposits, undividedMGSR002H100ISewardJUnconsolidatedK100N1000€AnoneBDrift River deltaCQuaternary, HoloceneD!Drift river delta, no descriptionGKN007H707IKenaiJUnconsolidatedK100N1000€AQsBQuaternary surficial depositsC QuaternaryDUndivided surficial depositsGKN009H900IKenaiJUnconsolidatedK100N1000€AQs€APredominantly alluvium deposited by nonglacial streams and outwash deposited by glacial meltwater. Consists of sand and gravel; terminal, lateral, and ground moraine composed of unsorted deposits of boulders, cobbles, gravel, and sand left by the retreat of alpine, valley, and regional glaciers; and talus and landslide deposits from adjacent bedrock. Also includes less extensive deposits consisting mostly of sand that may be locally abundant and form such features as beaches, spits, offsB_hore bars in coastal areas, and dunes on the Copper River delta. Surficial deposits, undividedMGMI002H100IMiddleton IslandJUnconsolidatedK100N1000llocallyWWWWWWWW@WAWaWdWWWWWWWWWWWWWWWWWWWWWWWWWWWW WWWWW W!W"W/W6W7W8W9W:WEWFWGWLWMWPWrWsWtWuWvWwWxWyWzW}WWWWWWWlocallyfoliatedseriatehornblende-biotitequartzdioriteb6VlocallyvariableamountsofvolcanicandsedimentaryrocksiVVVCWDWlucchiWWm@WAWaWdWWWWWWWWmaficWWWmainWmainlyWWWW$W)W*W,WWWmainlygravelandcoarsesandconsistsinpartofglacialanVmainlyunsortedgravelsandandsiltproduceddepositedandVmajorWWWCWDWmanltedWWWWmantleTWWmantled`WmWoWpWrWsWuWvWwWxWyWzWWitsEV'NthanWW4WWWWWWW WWW@WBWPWtWuWthatWWWWWW@WAWaWdWWWWWWWWWWWWWWWWWWWWW WWW#W$W%W(W/W0W;W<W=WDWGWHWIWnWoWpWqWrWsWtheWWWWW4WGWJWPWZWjWlWqWtWvWxWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W WWWWWWW#W$W%W&W(W0W9W:W;W=W@WBWDWHWIWNWOWPWQWTWWWjWlWmWnWoWpWqWrWsWtWuWvWwWWWisdenseharddark-graysiltstonewheVtheirHWIWWfRbyWWWWWWWWWWWWWBWHWKW`WmWoWpWrWsWuWvWwWxWyWzWWWWWWWWWWWWWWWWWWWWWWWW WW W!W"W&W(W3WDWHWIWRWUWlWmWWWWWcanWcanyonWcanyonsWcape0W1WWWWcarbonaceousWWWWWWcarbonateWWWcaribouWWWcaseWWcasesWWWcastsWWWWcedarWcenterWcentersWcentimetersWcentral WWchannelWW WWWWchanneledCWDWchannelsWWchaoticallyWcharacteristicWWWWcharacterizedWchemistry WchertWWchevronWWchieflyWWWW#WSWWWWWWWWchieflyrubblegravelsandsiltandclaymostextensiveinjVWdeltaWWWWWW&W0W1W4W@WAWaWdWWdeltadepositsrepresentingtheintertidalpartsoffansand4VdeltaicWW&W?W~Wdeltaicdepositsincludingoutwashandalluvialdeposits~VdeltasHWKWdenseWWWWW9W:WvWwWdenseharddark-graysiltstonewheresiltstoneiscarbonaceoVWWWW W W WWWWWWWWWWW W!W"W$W%W&W)W*W,W-W2W3W4W9W:W;W@WAWBWEWGWHWJWKWdepositsoflandslidesincludingfallsslumpsslidesandfaiVVdepositsoflargeflatalluvialfansinferredtobemoderateVdepositsofprotalusramparts Vdeposits--fine-grain6WderivedWWWdescriptionWdiamictonWWdipWdpositsWWdpositsofsmallsteepalluvial-colluvialfansinferredtobVVdrainageWWdrained5W8Wdraining?WquaternarytertiarytojurrassicVVquaternarywithmixedtertiaryVrecentWWWWW+W.W5W8WtertiaryWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W  W WWWWWWWWWWWW!W#W&W'W)W*WXWeneVVVVVVVVV VVVVVVVVVtertiaryeoceneandpaleoceneVVVVVVVVVVVVVVVVVVVVVVVVVV#V&V'VtertiaryeoceneandpaleoceneaddedV VVW€B$Surficial deposits, undifferentiatedCHoloceneD|Surficial deposits, undifferentiated -- Alluvium deposited by nonglacial streams and outwash deposited by glacial meltwater.GCV003H110ICordovaJUnconsolidatedK100N1000€AQuBSurficial deposits, undividedCHoloceneAPredominantly alluvium deposited by nonglacial streams and outwash deposited by glacial meltwater. Consists of sand and gravel; terminal, lateral, and ground moraine composed of unsorted deposits of boulders, cobbles, gravel, and sand left by the retreat of alpine, valley, and regional glaciers; and talus and landslide deposits from adjacent bedrock. Also includes less extensive deposits consisting mostly of sand that may be locally abundant and form such features as beaches, spits, offsB_hore bars in coastal areas, and dunes on the Copper River delta. Surficial deposits, undividedMGCV002H100ICordovaJUnconsolidatedK100N1000€AyellowBRecent glacio-fluvial depositsCQuaternary, Holocene$yundividedsurficialdepositsVunfoliatedWWunitWWWWWWWWWWWWWWWWWWWWWWWWWWW W WWWW$W%W&W'W/W9W:W@WBWDWHWIWPWRWUWdWeWfWjWlWmWnWoWrWsWtWuWvWwWWWWPWWWZWunsortedbouldertoclay-sizeparticlesmorainallandformscZVunsorteddepositsoffinetocoarserubble VVunstableWWWWunweatheredOWupWWWWWWWuplandWWuplift0W1Wuplifted7WupperWWWWWWWWupslopeTWupwardWusuallyWWWWWWWWWvalleyWWWWWWWWWWWWWWvalleysWCWDWWvariableWWWWWWWvariableproportionsofinterbeddedtholeiiticbasaltandtuV€Dglacio-fluvial depositsGCV005H502ICordovaJUnconsolidatedK100N1000€AyellowBRecent glacio-fluvial depositsCQuaternary, HoloceneDGlacio-fluvial depositsGCV006H502ICordovaJUnconsolidatedK100N1000€AQsB#Undifferentiated surficial depositsC QuaternaryAMainly unsorted gravel, sand, and silt produced, deposited, and reworked by action of wind, water, glaciers, and frost, including solifluction. In many areas of the map, this unit is a mixture of surrounding surficial deposit units that could not be readily sub-divided. In the vicinity of the Drift River delta, this unit contains a significant proportion of volcanic debris derived from airfall, mudflows and lahars from Mt. RedoubtGKN008H800IKenaiJUnconsolidatedK100N1000€AQcafB8Colluvium, alluvium, lacustrine, and floodplain depositsCQuaternary, HoloceneD8Colluvium, alluvium, lacustrine, and floodplain depositsGSV005H1500ISeldoviaJUnconsolidatedK100N1000€AQcaf>glacio-fluvialdepositsVVglaciofluvialWWWglaciolacustrine@WAWaWdWvWxWglaciomarineWWakeWWglidesWgradation0W1WgradedgWhW|W}WWWWWgradedtomorainesofalaskanageandtoexistingglacierfrgVhVgradedtomorainesofnaptowneage|V}VgradesWWgrained=WgravelWWWWWWWWWWWWWWWWWWWWW'W(W)W*W+W,W-W.W/W0W1W2W3W@WAWWW^WaWcWdWfWWWWgravelsiltandsandcommonlyoccuratmouthofsmallsidecVgravelsWWgrayWgreatlyWWgroundWWWWWW^WlWgroupWWhanging?Whangingdeltaiccomplexesassociatedwithoneormorestrand?VhasWhaveWWWheavilybWiWkWWhence7Whigh9W:WHWKWhigherWWWWW€B8Colluvium, alluvium, lacustrine, and floodplain depositsCQuaternary, HoloceneD8Colluvium, alluvium, lacustrine, and floodplain depositsGKN011H1100IKenaiJUnconsolidatedK100N1000€AQsB QuaternaryC QuaternaryDUnconsolidated depositsGKN012H1201IKenaiJUnconsolidatedK100N1000€AQBSurficial deposits, undividedCHoloceneAFPredominantly glacial moraine and outwash deposits and beach and terrace deposits. Consists of sand and gravel; terminal, lateral, moraine composed of unsorted deposits of boulders, cobbles, gravel, and sand left by retreat of alpine and valley glaciers; and talus consisting of coarse angular rock debris derived from bedrockFGSR005H3007ISewardJUnconsolidatedK100N1000€AQagBUnconsolidated depositsC QuaternaryDeIncludes stream and beach deposits, glacial till and outwash gravels, colluvium, and landslide debrisGKN014H141IKenaiJUnconsolidatedK100N1000€AQafBGFloodplains and alluvial fans, Alluvial fans and alluvial fan complexesVavicinityWWPWWWWrWsWvisitedWWvolcanicWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW0W1W@WBWHWIWjWlWmWnWoWpWqWtWuWxWyWzW{W}WWWWWlcanicrocksofiliamnaandredoubtvolcanoesVvolcanicrocksofredoubtvolcanoVvolcaniclasticWWWWWvolcanicsWWvolcanismWWvolcanoWWWWWWWvolcanoesWWWvolcanogenicWwallsWwasWW$W%W9W:WwaterWwave-deposited0W1Wwave-depositedcoarse-grainedmaterialanddriftwoodalongs0V1VweaklyWWWW-W0W;W=Wweaklymetamorphosedsiltstonegraywackearkoseandconglome-Vweather&W@WBWnWoWweatherediWkWweatheringW WWGWPWlWmWnWoWpWqW RpresentWW'W(W9W:WNWQWUWVW[W^W_WWWWWWWWWWWWWEWFWLWMWpresentlyWWpreserved0W1W7W;W=WpresumablyWtWuWprimarily\W]WWfWpWqWprimarilydark-graytobrownmassivearenacoussiltstoneconfVprimaryW WWWW7W;W<W=WprinceWprobable@WAWaWdWWWprobably7WlWWWWWWWWWWWWWWWWWWNWprobablygroundmorainedepositsofthebrookslakeglaciatilVprobablypillowbasaltbasaltictuffandsillsfewsmallareVVproducedW/Wproglacial?WCWDWvWxWWWWproglaciallakebottomsedimentsunderlyingterracedandchaCVDVWWWWWWWWW#W$W'W(W)W*W+W,W-W.W/W0W1W2W3W7W<W=W>W@WAWBWW€CQuaternary, PleistoceneDkAlluvial fans and alluvial fan complexes. Southernmost polygons recoded as Quaternary deposits, undivided.GSV007H4141ISeldoviaJUnconsolidatedK100N1000€AQtfB(Modern tidal flat and estuarine depositsC QuaternaryDhWell-sorted, stratified silt and some sand and local gravel deposited in shallow embayments. Sub-tidal.GKN008H803IKenaiJUnconsolidatedK103N1030€AQasBTidal silt and beach depositsCQuaternary, HoloceneDTidal silt and beach depositsGKN013H401IKenaiJUnconsolidatedK103N1030€AQasBTidal silt and beach depositsCQuaternary, HoloceneDTidal silt and beach depositsGSV007H401ISeldoviaJUnconsolidatedK103N1030€AQalB(Alluvial deposits -- Floodplain depositsC QuaternaryDjFloodplain deposits, inferred to be largely moderately to well-sorted sand and gravel. Some silt locally.GKN006H607IKenaiJUnconsolidatedK105N1050€AQalB'Alluvial deposits, Flood-plain alluviumCQuaternary, Recent3 deltaW0W1W4W?WWWWWdeltaic~Wdeltaicdeposits~VdepositionWWdepositsWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W WWWWWWWWWWWW W!W"W#W$W%W&W'W(W)W*W+W,W.W/W0W1W2W3W4W5W6W7W8W9W:W;W>W?W@WAWBWFWGWHWIWJWKWLWMWTWUWVWXWYW[W\W]W_WaWbWcWdWfWgWhWiWjWkWlW|W}W~WWWWWWWWWWWWWWWWWWWAWFWHWIWKWMWPW^WaWdriftofalaskanglaciation^VdriftriverdeltaVdune<Wdunes=elevated+W.W9W:Welevatedtidalsiltandbeachdeposits9V:Veolian>Weoliandeposits>VWrXwindWwindblown>WwinklerWWWWwith2W3W?WeWvWxWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W WWWWWWWWW!W&W'W0W9W:W;W=WAWEWFWGWPWlWmWpWqWxWWWWwithinWWWW&WHWIWWWpWqWwoodworthDWxenolith&Wyakataga0W1WWyearsWyellow-orangeWyellowish-brownhWiWyoungWyoungerWyoungestWyrsWzeoliteWWWWWW<WzeolitespWqWzoneW$W%W&W9W:WLWMWzonesWW&WEWFW1400vWwW150vWwWWcited+WconstrictaWWcorbisemaWWcrabWWWcrabbranchioplaxwashingtonianapelecypodaciladecisaVVV€DFlood-plain alluvium, poorly- to well-sorted silt, sand, pebbles, cobbles, and boulders. Mainly cobbles and boudlers except near tidewater. Includes some glacial outwash.GKN005H500IKenaiJUnconsolidatedK105N1050€AQsBStream-channel depositsC QuaternaryDStream channel depositsGKN007H701IKenaiJUnconsolidatedK105N1050€AQalBAlluviumC QuaternaryDMainly gravel and coarse sand, consists in part of glacial and glaciofluvial material reworked by postglacial streams. Forms flood plains along major streams and rivers.GKN008H805IKenaiJUnconsolidatedK105N1050€AQalB'Alluvial deposits, Flood-plain alluviumCQuaternary, RecentDFlood-plain alluvium, poorly- to well-sorted silt, sand, pebbles, cobbles, and boulders. Mainly cobbles and boudlers except near tidewater. Includes some glacial outwash.GSV004H500ISeldoviaJUnconsolidatedK105N1050€AQaB Alluvium CHoloceneg wkn006 $)*,234@AFGHIJKabd{n008݂킀 %&/7;BMPSTZkn009kn011\kn012kn0139ÃÃÃÃà Ã@%ÃP&Ã`/Ãp7Ã;ÃÃÄ"Ä#Ä&Ä&ÄAÄBÄRQÄRR blyingWW'WblyingsoundVV'Vcordova邀ꂀ낀삀 !"#-016=islandWkenai܂݂ނႀ炀肀킀  $%&)*+,/234579;WbasaltWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W,W.W/W3W@WAWBWDWLWMWlWmWbasaltsillsintrudemetasedimentaryrockschieflyslateonVVbasalt--pillowedWbasalt-andesite4Wbasalt-andesitedikeintrudingmchughcomplexstoredincove4VbasalticWWWWWWWWWWW W-W0WCWbasalticpyroclasticandflowrocksincludingminorpillowedVVbasalticpyroclasticandflowrockslocallyinterbeddedwithVbasaltsWWWWWbase9W:WRWUW_W`WdWeWhWiWbasinWWbasisWWWbatholithtWuWWbayWWWWWWWWW#W$W%WcWlWmWbaysWWWWWW WWTWWWJUnconsolidatedK106N1060AQcfB2Alluvial deposits -- Small alluvial-colluvial fansC QuaternaryDaDposits of small, steep alluvial-colluvial fans, inferred to be non-sorted silt, sand, and gravelGKN006H609IKenaiJUnconsolidatedK106N1060AQfB*Alluvial deposits, Alluvial fans and conesCQuaternary, RecentDJAlluvial fans and cones, unsorted rock talus, in part colluvial in origin.GKN005H501IKenaiJUnconsolidatedK106N1060AQfsB>Alluvial deposits, Partially submerged alluvial fans and conesCQuaternary, RecentDTPartially submerged alluvial fans consisting of sand and gravel; exposed at low tideGKN005H502IKenaiJUnconsolidatedK106N1063AQcf?B2Alluvial deposits -- Small alluvial-colluvial fansC QuaternaryDaDposits of small, steep alluvial-colluvial fans, inferred to be non-sorted silt, sand, and gravelGKN006H630IKenaiJUnconsolidatedK106N1060AQfB Fan depositsC QuaternaryD(Alluvial fan deposits of Cresecent RiverGKN007H702IKenaiJUnconsolidatedK106flatWfloodWWflood-plainWWfloodplainWWWfloodplainsWWWWW WfloodplainsandalluvialfansVVVfloodplainsandalluvialfansalluvialfansandalluvialfanVV VfloodsWflowWWWWflowsWWWWWWWforelandWWWformationWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW+W[W\W]W^W_W`WaWbWcWdWeWfWgWhWiWjWkWlWmWvWwWxWzW|W~WWWWWWWgWgabbroW W!W"W#W$W%WgabbroanddioriteVgaikematWuWglacialdepositslateralorterminalmorainesGVJVglacialdepositsnaptowneglaciationiVkVglacialdepositsofthenaptowneglaciationjVglacialdepositsofthenaptowneglaciationgroundmorainelV_V7alluvial-colluvialWWalluviumWWWWWWWWWWWWalmostWWlWmWalongWWWWW#W0W1WZWiWkWWWWWWWWWWWWW W$W%WalpineWWWWWalsoWWWWWW@WAWaWdWWWWWWWW WWWWWWWPWWalteredWWWWWWWWWWWWWWWW W"WGWHWIWalternatingW7W<WPWalthough6WamdiumWammoniteslWmWamountWWamountsWWWWWWWWWW@WBWamphibole!Wamphibolite&WDWNWQWRWTWUWWWWamphibolitelocallyincludessedimentaryrocksVamphibote-bearing@WBWamygdaloidalWWWWWWWWWWWWWWWWandesiticWWWW>WN1060AQafBAlluvial fan depositsC QuaternaryDiGravel, silt, and sand, commonly occur at mouth of small side canyons. Includes some colluvial deposits.GKN008H806IKenaiJUnconsolidatedK106N1060AQfB*Alluvial deposits, Alluvial fans and conesCQuaternary, RecentDJAlluvial fans and cones, unsorted rock talus, in part colluvial in origin.GSV004H501ISeldoviaJUnconsolidatedK106N1060AQafBGFloodplains and alluvial fans, Alluvial fans and alluvial fan complexesCQuaternary, PleistoceneD(Alluvial fans and alluvial fan complexesGKN013H414IKenaiJUnconsolidatedK106N1060 AQafBGFloodplains and alluvial fans, Alluvial fans and alluvial fan complexesCQuaternary, PleistoceneD(Alluvial fans and alluvial fan complexesGSV007H414ISeldoviaJUnconsolidatedK106N1060 AQctB!Deposits of Mass Wasting -- talusC QuaternaryD:Cone-shaped deposits of talus beneath steep bedrock slopesGKN006H610IKenaiJUnconsolidatedK107N1071 AQpry=beachWW'W(W)W*W+W,W.W/W0W1W5W8W9W:Wbeachanddeltadeposits0V1Vbeachdeposits'V(V/Vbeachdepositselevatedbeachridges+V.Vbeachdepositssaltmarsh5V8Vbeaches-Wbeachesspitsandoffshorebars-VbedeWWbedrockWWWWW{WbedrockundividedVbelugaWWbelugaformationVVbottomCWDWboulder-bearingWWbowserlWmWbrecciaWbrooksnWqWtW{WbrookslakedriftiliukstadenVbrookslakeiliamnamorainetVbrookslakenewhalenmoraineqVbyWcapeWWWcaribouWWWcedar Wcedarbaygranite VcenterWchannelW WcharacterWchert3WchinitnadWeWfWgWhWiWchinitnaformationfVgVchinitnaformationpaveloffsiltstonememberdVeVchinitnaformationtonniesiltstonememberhViVviumlacustrineandfloodplaindepositsVV tidalWWW2W3W9W:WtidalsiltandbeachdepositsVVtillZWtoWWWtokunWWtokunformationVVtonaliteWWtonaliteofdogfishbayVVtonniehWiWtraingWhW|W}WWWWWtransitionalRWUWtransitionalgneissRVUVtrondjemitetuffEFWtuffaceousWWundividedWWWWWWWXWYW{WunknownWvalleygWhW|W}WWvegetated)W,W2WvolcanicWwasting W WWWWWyoungerYWyoungerglacialdepositsundividedYVandWWWWWW/W;WLWholoceneWWW₀む䂀傀W邀WWWWWW WWWWWWWWW!W"W#W'W(W)W*W,W-W/W0W1W2W3W4W6W;W<W=W>WLWOWSWWWXWYWZW\W]W^W`WeWgWhWW B-Deposits of Mass Wasting -- protalus rampartsC QuaternaryDDeposits of protalus rampartsGKN006H613IKenaiJUnconsolidatedK107N1071 AQlcB Landslide and colluvial depositsC QuaternaryD*Unsorted deposits of fine to coarse rubbleGKN005H510IKenaiJUnconsolidatedK107N1070 AQtBTalusCQuaternary, HoloceneD6Talus-- Boulder- to pebble-sized, angular rock debris.GCV003H140ICordovaJUnconsolidatedK107N1071AtanBTalusCQuaternary, HoloceneDTalusGCV005H503ICordovaJUnconsolidatedK107N1071AtanBTalusCQuaternary, HoloceneDTalusGCV006H503ICordovaJUnconsolidatedK107N1071AQcBColluvial depositsCQuaternary, HoloceneAChiefly rubble, gravel, sand, silt, and clay. Talus and other slope debris deposits, also includes alluvium of minor streams, and locally glacial, rock glacier, and mass-wasting deposits. May include older glacial drift and locally grades into glacial deposits.GKN008H807IKenaiJUnconsolidatedK107N1070AQlcX ‚܂݂Ã!߂ႀ₀む䂀傀悀炀肀邀ꂀ낀삀킀Ã!@Ã!`Ã!p Ã! Ã!Ã!Ã"Ã"  Ã"0!"#Ã"@$%Ã"P&Ã"`'()*+,-./01Ã"p23456789:Ã";Ã"<Ã#=>Ã#@?Ã#P@ABCDÃ#`EFGHIJKLMÃ#pNOPQÃ#RSÃ#TÃ$UVWXYZ[\]^_`Ã$ abcdefghÃ$`ijklmÃ$pnopÃ$qrsÃ$tuvwxÃ$yzÃ%{|}Ã(~Ã*Ã*PÃ*`Ã1Ã1 Ã8`Ã:`ÃAÃA`ÃB ÃB0ÃB@ÃBPÃQ0ÃeÃe`ÃgÃg Ãg`ÃqÃtÃx`ÃyÃÂÃ`ĂłƂB Landslide and colluvial depositsC QuaternaryD*Unsorted deposits of fine to coarse rubbleGSV004H510ISeldoviaJUnconsolidatedK107N1070AQuB Slope deposits, undifferentiatedC$Quaternary, Holocene and PleistoceneDColluvium consisting of talus and small landslides, also includes small glacial, rock glacier, and alluvial deposits. Sand, gravel, boulders, diamicton, and rubbleGCV004H701ICordovaJUnconsolidatedK107N1070AQlsB.Deposits of Mass Wasting -- landslide depositsC QuaternaryDDeposits of landslides, including falls, slumps, slides, and failures by lateral spreading. Assigned NSA = 312 in vicinity of Polly Creek where this unit consists of debris flows from Mount Redoubt.GKN006H611IKenaiJUnconsolidatedK108N1080AQcmBWWWWdWeWlargelyWWW9W:WlargerWWWW&Wlarger-sizedWlargest#Wlate9W:WWWlateralWWWWWWWGWJWWW^WjWWlaterallyWWWPWlatouche#WlaumontiticjWlavaWWWWWWCWxWzW|W~WWWlavabrecciaandassociatedpyroclasticsmayincludetertiarVlavaflowsandassociatedpyroclasticrocksassociatedwithVlavaflowsfromthenorthandsouthtwinvolcaniccenterproVlavasWlayeredWlayering$W%WNWlayersWGWPWWleastWWWledWVlight-yellow-brownWlighterWligniteWWlimestoneWlimitedWlinesWWlithifiedWWlithologicallyWlithologiesWlithologyWWlittlemWoWpWrWsWuWwWyWzWlocalWHWKWTW^WWWWWWlocalizedWmodernWmoderntidalflatandestuarinedepositsVmonzoniteWWmoosehornyWzWmoraineENWOWQWRWWlWqWtW`WmWoWpWrWsWmorainesofalaskaglaciation`VmorainesofnaptowneglaciationmVmorainesofnaptowneglaciationskilakadvancerVsVmorainesofnaptowneglaciationtanyaadvanceoVpVmudflowWWmuskeg$Wnaptowne?WCWDWiWjWkWlWmWoWpWrWsWnatural&Wnaturalleveedeposits&VnewhalenqWnonvegetated*W3WofW W WWWWW?WCWDW^W`WjWlWmWoWpWrWsWoffshore-WolderWWLWolderalluviumVVolderglacialdepositsLVonNWQWorWGWJWother$W)W*W,W2W3W4Wotherunconsolidateddepositsdeltadeposits4Votherunconsolidateddepositsnonvegetatedbeachdeposits*Votherunconsolidateddepositsnonvegetatedtidalmarshdepos3VKNsteepWW WsteeplyHWKWsterlingWstillwaterWWstockWWstock-lke Wstock-work$W%WstocksWstoredW4Wstrandline?WvWxWWWWWWstrataWWWW.WstratalRWUWstratifiedWWW7W@WAWFWHWIWKWaWdWstratifieddriftinice-contactdepositskameterracesordeHVKVstreaked.WstreamWWWWstreamchanneldepositsVstreambedsWstreamsWWWWWWWWWWWWW#W?W=occurW@WAWaWdWWWWWWW#W$W%W&W(W9W:WHWIWtWuWoccurrenceWWWWoccurring9W:WtWuWoccursWW&WlWmWpWqWocean0Woceanic0Woceanic-crust WW,W-W0W1W2W3W4W<W>W?WBWFWGWIWJWOWPWUWVWWWZW[W\W]W^W_WbWgWhWjWlWmWoWpWqWrWsWtWuWvWwWxWyWzW|W}WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WWB.Deposits of Mass Wasting -- landslide depositsC QuaternaryDZDeposits of landslides, including falls, slumps, slides, and failures by lateral spreadingGKN006H626IKenaiJUnconsolidatedK108N1080AQcm?BVOVSVWVXVYVZV\V]V^V`VeVgVhVVVVVVVVVVVVVVVquaternaryholoceneandpleistoceneVVV/VLVC Quaternary?DnAbandoned or underfit stream channel, inferred to be relict glacial meltwater channel. Shown by symbol on mapGKN006H623IKenaiJUnconsolidatedK111N1110 AQacBAbandoned channel depositsC QuaternaryDYAbandoned channel deposits in outwash above modern floodplains. Air photo interpretationGKN008H811IKenaiJUnconsolidatedK111N1110!Alt greenBRecent Lacustrine depositsCQuaternary, HoloceneDLacustrine depositsGCV005H501ICordovaJUnconsolidatedK112N1120"Alt greenBRecent Lacustrine depositsCQuaternary, HoloceneDLacustrine depositsGCV006H501ICordovaJUnconsolidatedK112N1120#AQflBFine-grained depositsCQuaternary, HoloceneD{In ponds, swamps, lagoons, and along low-gradient streams. Chiefly silt, clay, fine sand, peat, and other organic materialGCV004H707ICordovaJUnconsolidatedK112N1120$AQmB1Other unconsolidated deposits -- swamp and muskegC QuaternaryypalluvialWWWWWWWWWWWWWWW WalluvialdepositsalluvialfansValluvialdepositsalluvialfansandconesVValluvialdepositsflood-plainalluviumVValluvialdepositsfloodplaindepositsValluvialdepositspartiallysubmergedalluvialfansandconeValluvialdepositssmallalluvial-colluvialfansVValluvialfandepositsValluvial-colluvialWWalluviumWWWWWWamphiboliteandWWWWWWWWWWWWWW W WWWW$W-W0W1W9W:WWWgWhW|W}WWWWWWWWWWWWWWWWWWWWWWW WWWWW!W'W*W1W2W3W>W?W@WAWBWWWWartificialWash-richWash-richcolluviumVavalancheWWbWWbars-WbasaltWW]inpondsswampslagoonsandalonglow-gradientstreamschief#VinactiveWincludeWWWW$WPWWWWWWW W"W,W.WlWmWincludedWWWW^WaWdWWWWWincludesatleast1500mofinterbeddedmassivetothin-beddVincludesstratifiedandlocallyforeset-beddedsandandgrav@VAVaVdVincludesstreamandbeachdepositsglacialtillandoutwashVincludingWWWWW~WWincompetentWincorporatedWindicateWWindicatesWinferredWWWWWFWIWWinferredtoconsistoflodgementtillablationtillandstraFVIVinformally>WinletWintenselyWWinterbeddedWWWWWWWWWinterbeddedpoorlyconsolidatedsandstonesiltstoneclaystonVinterbeddedweaklylithifiedsandstonesiltstonemudstonecaVVinterbedsWWWWintercalatedWW$DWSwamp and muskeg deposits, mainly organic material, but may include clay, silt, or sandGKN006H614IKenaiJUnconsolidatedK113N1130%AQswBSwamp depositsC QuaternaryD?Silt, sandy silt, and bog deposits, interpreted from air photosGKN008H813IKenaiJUnconsolidatedK113N1130&AQlvBNatural levee depositsC QuaternaryD:Natural levee deposits on deltaic or fan delta deposits. GKN008H814IKenaiJUnconsolidatedK114N1140'AQbBBeach depositsCQuaternary, HoloceneD]Sand, gravel, and cobbles of present and former beaches, beach ridges, spits, and tidal flatsGBS004H1I Blying SoundJUnconsolidatedK115N1150(AQbBBeach depositsCQuaternary, HoloceneD]Sand, gravel, and cobbles of present and former beaches, beach ridges, spits, and tidal flatsGSR004H1ISewardJUnconsolidatedK115N1150)AQbvB9Other unconsolidated deposits -- vegetated beach depositsCQuaternary, HoloceneDCVegetated beach deposits consisting mainly of mixed sand and gravelGKN006H616IKenaiqoneW?WWWWWWWWW WWone-halfWone-thirdWWonlyWWWWWW&WonlyincludesmaficplugsintheeasterncordovaquadrangleVVopaqueWWWWW!WophioliteW Wophiolitic Wophitic!Woptically WorW$W&W?WGWHWJWKW`WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WWW W"W&W1W>W?WPWorange&W@WBWnWoWrWsWorange-weatheringWWorcaWWWWWWWWW WW!W#W&Worcagroupmaficsheeted-dikecomplexesintheorcagroupocVW2W3W6WWWorganic-carbonWWorganic-richWWorientationW W WoriginWWWWoriginalWorthoclaseWWorthopyroxeneWiationundivided{VVcsandgravelandcobblesofpresentandformerbeachesbeach'V(VsandierWsandstoneWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW#W+W-W.W/W0W9W:W@WBWLWMW[W\W]W^WdWeWfWgWhWiWjWkWlWmWpWqWrWsWtWuWvWwW|W~WWsandstonearkoseconglomerateandsiltstone\V:WWWWseacoast0W1WsectionWWWsectionsWWWsediment0W1WWsedimentaryWWWWWWWWWWWWWWWWsedimentsCWDWvWxWWWWseemWsemi-anthraciteWsemi-consolidatedWsemiconsolidatedWWsemiconsolidatedcoal-bearingsiltsandandgravelVV)JUnconsolidatedK115N1151*AQbnBgradation@graded@granodioritic@greatly@Kgreenmassivemediumtocoarse-grainedandlocallypegmatiti@dhave@progressive@regional@ sand^sandgravelandcobblesofpresentandformerbeachesbeach@separatable@;slumpsearth-debrisflowsblockglidesanddebrisavalanches@steep@strike@surfaces@terminal@.tertiary@'than@these@tunnel@$undividedsurficialdeposits@vicinity@wind@kn006@kn007@ ÃQ`@Ã`@Ã@ÄRQ@: middleton@ unconsolidated= 1hfloodWWWWWfloodplainsandassociatedhigherterracesalongmajorstreVVflood-plainWWWWflood-plainalluviumpoorlytowell-sortedsiltsandpebblesVVfloodplainWWWfloodplaindepositsinferredtobelargelymoderatelytowelVfloodplainsW WfloodsWflowWWWWWWWWWflowedWflowsWWWWWWWWWWWWWWWWWWWWWWWWWWxWzW{W|W~WWWWWfluidWfluteWWWWflyschWW9W:W;W=WflyschoidWWWfmWfoldWfoldedWWW1W>W?WfoldsWWWfoliatedWWWWWWW'W6WfoliationPWfollowsWWWWWLWMWXWYW\W]WWglacialdepositsLVXVYVglacialdepositsandvolcanicandplutonicrocksundividedV12AQifvB?Other unconsolidated deposits -- vegetated tidal marsh depositsCQuaternary, HoloceneDVVegetated tidal marsh deposits, consist of organic material mixed with sand and gravelGKN006H618IKenaiJUnconsolidatedK116N11603AQifnBBOther unconsolidated deposits -- nonvegetated tidal marsh depositsCQuaternary, HoloceneDYNonvegetated tidal marsh deposits, consist of organic material mixed with sand and gravelGKN006H619IKenaiJUnconsolidatedK116N11604AQidaB/Other unconsolidated deposits -- delta depositsCQuaternary, HoloceneDpDelta deposits, representing the intertidal parts of fans and contain coarser material than adjacent tidal flatsGKN006H620IKenaiJUnconsolidatedK116N11605AQbmBBeach deposits, Salt marshCQuaternary, RecentDCSalt- marsh, well-stratified silt and small pebbles, poorly drainedGKN005H504IKenaiJUnconsolidatedK116N11606AQlBLagoonal depositsCQuaternary, Holocene1AZWave-deposited, coarse-grained material and driftwood along seacoast; fine-grained sediment in mud flats of Copper River Delta; and marine uplift terraces. Successive spit-building episodes of progressive gradation are preserved in beach sequences along coastal lowland between Cape Yakataga and Bering Glacier. Boulders, gravel, sand, and siltZGCV004H709ICordovaJUnconsolidatedK115N1150'driftWWWFWHWIWKWMW\W]WnWWWWWWWdriftriverdeltanodescriptionVdriftwood0W1W$W%WdropstonesWdueWWWpWqWdune<WdunesWWWW=W>Wdunesontopsofriverbluffswindblownflatsandriverbars>Vduneswellsortedfinegrainedsandandsiltalignedinlong=Vdunite(WGWHWIWWdunitelocallywithlayersofchromitemoderatelytomostlyGVduring9W:WWWeagle/WearlierWWWearlyWearth-debrisWeasilyWeastWW#W$W%W;W=WNWxWWeasternWWeasternmost$W%WeastwardW WeickelbergWeklutnaWWWWWWWelevated+W.W9W:W6DMLagoonal deposits--Fine-grained silt rich in organic material, mud, and peat.GCV003H120ICordovaJUnconsolidatedK116N11607AQesBEstuarine depositsC QuaternaryDpWell-sorted, stratified silt and some sand deposited in shallow embayments, supra-tidal, hence probably upliftedGKN008H816IKenaiJUnconsolidatedK116N11608AQbmBBeach deposits, Salt marshCQuaternary, RecentDCSalt- marsh, well-stratified silt and small pebbles, poorly drainedGSV004H504ISeldoviaJUnconsolidatedK116N11609AQtsB&Elevated tidal silt and beach depositsCQuaternary, PleistoceneDElevated tidal silt and beach deposits. Record high sea level stand about 10 - 15 feet above present datum during late Tanya timeGKN013H415IKenaiJUnconsolidatedK116N1160:AQtsB&Elevated tidal silt and beach depositsCQuaternary, PleistoceneDElevated tidal silt and beach deposits. Record high sea level stand about 10 - 15 feet above present datum during late Tanya timeGSV007H415ISeldoviaJUnconsolidated`:K116N1160;AQtmBMarine terrace depositsC$Quaternary, Pleistocene and HoloceneDMarine terrace depositsGKN008H817IKenaiJUnconsolidatedK117N1170Cliff-head dune sand. Near Point Possession; of "Alaskan" ageGKN013H402IKenaiJUnconsolidatedK119N1190=AQdBDunesCQuaternary, HoloceneDODunes-- Well sorted, fine grained sand and silt aligned in longitudinal ridges.GCV003H125ICordovaJUnconsolidatedK120N1200>AQeBEolian deposits CQuaternary, HoloceneDDunes on tops of river bluffs, windblown flats, and river bars. Includes informally named Bremner sand dunes, a large barchan field, located at confluence of Bremner and Copper Rivers. Fine-grained sandGCV004H715ICordovaJUnconsolidatedK120N1200?AQldB&Hanging delta deposits of Naptowne ageCQuaternary, PleistoceneBcoarseWW WWSWWWW9W:WPWrWsWtWuWcoarse-grained0W1W W WWWWWWWWW W!W"W$W%W/WlWmWpWqWWWcoarselyWcoarser4WcoarsestrWsWcoastWcoastalWWWW0W1WcobbleWWWWWtWuWcobble-bouldercWcobblesWWWWWWWWW'W(WWWW9W:WcolluvialWWWcolluviumWWWWWcolluviumalluviumlacustrineandfloodplaindepositsVVcolluviumconsistingoftalusandsmalllandslidesalsoinclVcolorW W WWWW&W6WnWoWcoloredWPWcolumbiaWcolumnarWcombinedWWIWWconsistingWWWWWWW)W*W,WWWconsistsWWWWWWWPWWWWWconsistsoftephra-richcolluviuminthevicinityofandwesV^( unconsolidated=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ 7estuarineW7Westuarinedeposits7VfallspWqWfanWWWW WfandepositsVfansWWWWWWWWWWW WbWfelsicWfelsiteWfelsitedikesVfillWfine-grained#Wfine-graineddeposits#VfitzrWsW:ÃÃ@Ã`ÃpÃÃÃÃà Ã@%ÃP&Ã`/Ãp7Ã;ÃÃPBÃ`MÃpPÃSÃTÃZà eÃPÃ`jÃpnÃqÃtÃ{ÃÃ`à Ã0Ã@Ã~ÃÃà Ã05Ã@ÃP}ÃpÄ!!Ä!JÄ"Ä"A\Ä"sÄ"uÄ# Ä#Ä#Ä#)Ä#Ä#Ä#Ä$aXÄ&Ä&Ä&$Ä&A]Ä2-Ä88Ä96yÄ:*ÄAÄA!\ÄAAgÄADÄAÄAÄAÄAÄAÄAÄBÄBÄB*ÄB1ÄB4ÄB9 ÄBkÄCazÄEÄEÄFqÄHKÄQ1 $%&)*+,/234579;W?WquiteWWW6WFDeInferred to consist of lodgement till, ablation till, and stratified drift. Thickness ranges widely.GKN006H600IKenaiJUnconsolidatedK125N1250GAQdtB0Glacial deposits -- Lateral or terminal morainesC QuaternaryD9Till deposits in the form of lateral or terminal morainesGKN006H601IKenaiJUnconsolidatedK125N1250HAQdiB$Glacial deposits -- Stratified driftC QuaternaryDStratified drift in ice-contact deposits (kame terraces or deltas). Identified by high local relief and steeply sloping margins.GKN006H602IKenaiJUnconsolidatedK125N1250IAQd?B2Glacial deposits -- Undifferentiated glacial driftC QuaternaryDeInferred to consist of lodgement till, ablation till, and stratified drift. Thickness ranges widely.GKN006H625IKenaiJUnconsolidatedK125N1250JAQdt?B0Glacial deposits -- Lateral or terminal morainesC QuaternaryD9Till deposits in the form of lateral or terminal morainesGKN006H624IKenaiJUnconsolidatedK125N1250KAQdi?l about9W:WvWxWWWWWWWWWWWWWWWWlWmWpWqWvWwWaboveW W9W:Wabundance$W%WabundantWWWWWWWWWWWWWWWWWWW W.W0W;W=WEWFWLWMWPWWabundantmud/Waccessory W"WlWmWaccompanied WaccordingyWacrossWW W WactinoliteWWWWW W"WEWFWLWMWirphotosTWalaskan<WUWVW[W_WgWhWaligned=WallWWWalluvialWWWWWWWWWWW WWWW~WalluvialfandepositsofcresecentriverValluvialfansandalluvialfancomplexesV ValluvialfansandalluvialfancomplexesnorthernpolygonsiValluvialfansandalluvialfancomplexessouthernmostpolygoValluvialfansandconesunsortedrocktalusinpartcolluviaVVglacialdepositsundifferentiatedglacialdriftFVIVMVglacialdepositsundividedXVglaciationUWVWZW[W^W_W`WeWiWjWkWlWmWoWpWrWsWuWvWwWxWyWzW{WWWWWWWWglaciationsZWglacierWW WvWwWglaciersSWglacio-fluvialWWglaciolacustrineBWglaciolacustrinedepositsBVgneissOWRWSUWVgrahamWgranite W WWWWWWWgraniteandgranodiorite VVVgraniteofhardingicefieldregionVVgraniticWgraniticrocksVgranitoidWgranitoidrocksVWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Whanging?Whangingdeltadepositsofnaptowneage?VhemlockWhillsWWWholoceneWholocenevolcanicrocksVWWW  middletonWWWWWWWmiddletonislandVVVVVVVseldovia߂ .8:DQ[]_fhkpswxz}ĂƂ삂+,2347?JY[^`befijmoqsuwx~sewardむ悀(̂͂ς҂ӂԂՂւׂڂۂ݂ނめ傁肁 !"#%&./0:;@FGHM‚ÂĂłƂǂȂɂʂ˂̂͂΂ςЂт҂ӂԂՂւׂ܂ނ߂め䂁傁悁炁肁邁unconsolidated߂ႀ₀む䂀傀悀炀肀邀ꂀ낀삀킀  !"#$%&'()*+,-./0123456789:;<sKB$Glacial deposits -- Stratified driftC QuaternaryDStratified drift in ice-contact deposits (kame terraces or deltas). Identified by high local relief and steeply sloping margins.GKN006H627IKenaiJUnconsolidatedK125N1250LAlimeBOlder glacial depositsC$Quaternary, Holocene and PleistoceneDGlacial depositsGCV006H511ICordovaJUnconsolidatedK125N1250MAQdB2Glacial deposits -- Undifferentiated glacial driftC QuaternaryDUndifferentiated glacial driftGKN008H825IKenaiJUnconsolidatedK125N1250NAQmiBMoraine on iceC QuaternaryD4Superglacial and endglacial till on present glaciersGKN005H508IKenaiJUnconsolidatedK126N1260OAQsmBSupraglacial moraineCQuaternary, HoloceneDRSupraglacial moraine-- Unweathered, poorly sorted, debris on surfaces of glaciers.GCV003H130ICordovaJUnconsolidatedK126N1260PAQsgBSuperglacial driftC Quaternary4depositWWdepositedWWWWWWW7W?WBWWWW0WdepositionWWWWWWWWWWdepositionalWWdepositionally3WdepositsWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W WWWWWWWWWWW W!W"W$W%W&W)W*W,W-W2W3W4W9W:W;W@WAWBWEWGWHWJWKWLWRWXWYWZW\W]W^W`WaWdWeWjWlWmWoWpWrWsWuWvWwWxWyWzW~WWWWWWWWWWWWWWWWWWWWWW1W>W?Witsofprotalusramparts Vdeposits--fine-grain6WderivedWWWTWWWWdescriptionWdiamictonWW^WWWdipWdiscontinuouslyvWxWWWWWW%iliamnaWPWtWWWWiliannazWiliuknWimbricatedWWimmediateWinWWWWWWWWWWWWWWWWW W#W0W1W6W7W=WBWCWDWGWHWJWKWPWUWVW[W_WcWfWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W WWWWWWWWWWW$W%W&W/W0W4W7W9W:W;W=W@WBWDWHWIWJWKWLWMWPWRWUWhWiWjWlWmWpWqWrWsWtWuWvWwWzWWWWinactivestreambedsandlowestterracesalonglargerstreamVinhigherterracesalonglargerstreamsandininactivealluVksupraglacialmoraineOVsurficialWWWWWWWWWWWWW.surfacesCWDWOWWsurficialWWWWWWWWWWWWsurficialdepositsVVVsurficialdepositsundifferentiatedalluviumdepositedbynoVsurroundingWWWsuspendedWswamp$Wswampandmuskegdepositsmainlyorganicmaterialbutmayin$Vswamps#WsymbolWsyn-dWWtableWWtabularWWWtalcGWtalkeetnatWuWyW{WWtalusWWWWWWWWW W WWW$W%Wtalusbouldertopebble-sizedangularrockdebris VtanWWW/Wtantolight-yellow-brownconglomeratesandstoneandlaminatVtanya9W:Wtectonic,WJWKWtectonicmelangeconsistingofblocksofgraywackeinaphacJVKVtectonically(WHWIWtemporaryWtendingWWtends@WBWtens7Wtephra-richWterentievWwVVterracesWWWW0W1WHWKWcWfWPDConsists of unsorted boulder to fine-grained debris on the surface of modern glaciers. In the vicinity of Mount Redoubt and Mount Iliamna, may include a significant component of ash and other air-fall debris from eruptionsGKN008H826IKenaiJUnconsolidatedK126N1260QAQmiBMoraine on iceC QuaternaryD4Superglacial and endglacial till on present glaciersGSV004H508ISeldoviaJUnconsolidatedK126N1260RAQrgBMoraineC QuaternaryDRock glacier depositsGKN003H127IKenaiJUnconsolidatedK127N1270SAQrgB Rock glaciersCQuaternary, HoloceneDmActive and recently active rock glaciers. Chiefly rubble and coarse rock debris, interpreted from air photosGKN008H827IKenaiJUnconsolidatedK127N1270TAQsfBSolifluction depositsC QuaternaryDSolifluction mantle, interpreted from airphotos. Thought to be poorly sorted sand, silt, and clay derived from local upslope bedrock sources.GKN008H828IKenaiJUnconsolidatedK128N1280UAQgtnOconsistsofunsortedbouldertofine-graineddebrisonthesPVconsistsofvolcanicrocksanddepositsassociatedwithiliaVconsistspredominantlyofconcretionarysiltstoneandlesserV4WWWcontainsWWcontentsWWcontrolWcookWcopperWWWW0W1W>WcouldWcoverWcoveredBWVW_WiWkWWcreatingWWcreekW@WAWaWdWWWWWcrescentWWWcresecentWdaciteWdammedWdarkWdark-brownWWdark-grayWWWWWdatedWdatum9W:WdebrisWWW WWWWWWWWOWPWSWWWWWWWWWdebrisflowdepositsofcrescentrivervalleyincludesseverVdebrisflowdepositsofnorthforkcrescentriverdepositsoVVdebrisflowdepositsonthenorthflankofredoubtvolcanoiVdecadesWGsolifluctionTWsolifluctiondepositsTVsouthWspWWspits-WstadeUWVW[W_WnWsterlingWWWsterlingformationVVVstillwaterWWstillwaterformationVVstratified@WAWHWKWaWdWstreamWstream-channelWstream-channeldepositsVsubjectedWWsubmergedWsuperglacialPWsuperglacialdriftPVsupraglacialOW YangularWWW WWWWlWmWpWqWanhedralWWapatite W"WaphaniticW WpWqWtWuWzWWaphyricWWWWWWWapparentWapparentlyWWtWuWappearanceWWW/WRWUWtWuWappearsWapproximatelyW@WBWW1W@WAWZWaWdWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W WWWWWWWW!W#W$W%W(W.W/W0W7W9W:W;W<W=WareaWWWWW WWareasWWWWWWWWWWWWWWWWWWWareascomposedofaboutequalamountsofpillowbasaltandiVVareasindriftrivervalleysubjectedtofloodscourordepoVareasofmudflowdepositsnoteasilyseparatableintotheyoVUB1Glacial deposits, Tunnel Stade Alaskan GlaciationC QuaternaryD`Barren moraine as much as 1-mile in front of present glaciers. Tunnel Stade, Alaskan GlaciationGKN005H505IKenaiJUnconsolidatedK130N1301VAQgtB4Glacial deposits, Tustumena Stade Alaskan GlaciationC QuaternaryDPartially dissected moraine 1-6-mile in front of present glaciers; spruce and brush covered. Tustumena Stade, Alaskan GlaciationGKN005H506IKenaiJUnconsolidatedK130N1302WAQmB%Terminal, lateral, and ground moraineCQuaternary, HoloceneDxTerminal, lateral and ground moraine-- Unsorted boulders, cobbles, gravel and sand deposited during retreat of glaciers.GCV003H135ICordovaJUnconsolidatedK130N1300XAtanBGlacial deposits, undividedCQuaternary, HoloceneDGlacial depositsGCV005H504ICordovaJUnconsolidatedK130N1300YAtanB#Younger glacial deposits, undividedCQuaternary, HoloceneDglacial deposits GCV006H510ICordovaJUnconsolidatedK130N1300ZAQag hfs܂ނyq‚܂݂ÃAÄ!߂ႀ₀む䂀傀悀炀肀邀ꂀ낀삀킀Ä!AÄ!aÄ!q Ä!tÄ! Ä! Ä!Ä!Ä!Ä"Ä"! Ä"1!"#Ä"A$%Ä"Q&Ä"a'(*-./01Ä"b)+,Ä"q23456789:Ä";Ä"<Ä#=>Ä#A?Ä#Q@ABCDÄ#aEFGHIJKLMÄ#qNOPQÄ#RSÄ#TÄ$WXY\]^`Ä$UZ[Ä$V_Ä$!abcdefghÄ$dijklmÄ$qnÄ$topÄ$qÄ$rsÄ$tÄ$uvwxÄ$yzÄ%{|}Ä(~Ä*Ä*Ä*TÄ*dÄ1Ä1!Ä8ałǂÄ:aÄAÄAaÄB!ÄB1ÄB2ÄB3ÄBAÄBQÄQ1ZB,Alaskan glaciation, till, Cirque glaciationsCQuaternary, Holocene?DUnsorted boulder to clay-size particles. Morainal landforms common as are till deposits along the margins of modern glaciers.GKN008H830IKenaiJUnconsolidatedK130N1301[AQgtnB1Glacial deposits, Tunnel Stade Alaskan GlaciationC QuaternaryD`Barren moraine as much as 1-mile in front of present glaciers. Tunnel Stade, Alaskan GlaciationGSV004H505ISeldoviaJUnconsolidatedK130N1301\AQmhBGlacial depositsCQuaternary, HoloceneDZGlacial deposits of Holocene age, primarily ice-stagnation drift, outwash, and end moraineGKN011H1130IKenaiJUnconsolidatedK130N1300]AQmhBGlacial depositsCQuaternary, HoloceneDZGlacial deposits of holocene age, primarily ice-stagnation drift, outwash, and end moraineGSV005H1530ISeldoviaJUnconsolidatedK130N1300^AQagBDrift of Alaskan glaciationCQuaternary, Holoceneglacialdepositsofholoceneageprimarilyice-stagnationdr\V]VglaciallyWglaciallyscouredbedrockmaybecoveredwiththinglaciallyVglaciatedWglaciationUWVW[W_WiWjWkWlWqWtW{WWWWWWWWWglacierWW0W1WRWgWhWWWWWWWW WWjWglaciersWWWWWWNWOWPWQWSWUWVWWWZW[W^W_WeWWDWglacio-fluvialWW^DNeoglacial deposits of end, lateral, and ground moraines, kames and outwash proximal to present glaciers; includes small rock glaciers. Diamicton, local gravel, and sandGCV004H711ICordovaJUnconsolidatedK130N1300_AQgtB4Glacial deposits, Tustumena Stade Alaskan GlaciationC QuaternaryDPartially dissected moraine 1-6-mile in front of present glaciers; spruce and brush covered. Tustumena Stade, Alaskan GlaciationGSV004H506ISeldoviaJUnconsolidatedK130N1302`AQaBMoraines of Alaska GlaciationCQuaternary, HoloceneDLUnmodified moraine deposits or mantled by loess, generally 2 to 6 feet thickGKN013H400IKenaiJUnconsolidatedK130N1300aAQdsBEGlacial deposits -- Proglacial stratified drift (active outwash part)C Quaternary5 <sand^WaWcWdWfWWWWW/WalaskanUWVWZW[W^W_WeWalaskanglaciationoutwasheValaskanglaciationtillcirqueglaciationsZV~manyWWW;W=WOWnWoWrWsWmapWWWWWWWWW#WfWjWmappedWWWzWmarble@WBWWmarblequartzitegarnet-micaschistandglaucophane-bearingVmarginalWWWWWW-wastingWmassiveWWWWWWWmassivetothin-beddedcoal-bearingarkosicsandstonedark-gVmaterialWWW#W$W0W1W2W3W4W6WWWWmatrixWmatrix-supportedWWmaximumWmayWWWWWWWW$WPWWWWWWWWmeasuredWmedialjWmediumWWWWWmedium-grayWWmeltwaterWWWWWWmemberWWmentionedWWWmetamorphosedWWWmetasedimentaryWWmicaceousWmicriticWWmiddleWmiddletonWminimallyWminorWWWWWWWWWWWsEV abAQdfB Glacial deposits -- Outwash fansC QuaternaryD5Moderately to heavily vegetated parts of outwash fansGKN006H605IKenaiJUnconsolidatedK131N1310cAQoBOutwash depositsC QuaternaryDQPoorly- to well-sorted silt, sand, and gravel in terraces and outwash fans plainsGKN005H509IKenaiJUnconsolidatedK131N1310dAQds?B/Glacial deposits -- Proglacial stratified driftC QuaternaryAIncludes stratified and locally foreset-bedded sand and gravel that occur below 125 m elevation on West Foreland and from Katchin Creek to Redoubt Point; these deposits are probable emerged delta and glaciolacustrine deposits. Also includes active outwash fansGKN006H628IKenaiJUnconsolidatedK131N1310eAQaoBAlaskan Glaciation, outwashCQuaternary, HoloceneD=Outwash deposits associated with modern and Holocene glaciersGKN008H831IKenaiJUnconsolidatedK131N1310fAQoBOutwash depositsC QuaternaryGaAIncludes stratified and locally foreset-bedded sand and gravel that occur below 125 m elevation on West Foreland and from Katchin Creek to Redoubt Point; these deposits are probable emerged delta and glaciolacustrine deposits. Also includes active outwash fansGKN006H604IKenaiJUnconsolidatedK131N1310SuregionalWWWWregionally<WregressiveWrelatedWWWWrelationWWresenting4WresistantWrestWrestrictedWWWretreatWWWWWWWreworkedWWrich6WWWridgeWridges'W(W+W.W=WWriverWWWWWWW0W1W>WWWWWWWWWWriversW>WrockWWW WWWWWWRWSW^WWWrockavalanchedepositsVrockglacierdepositsRVrocksWWWWWWWWWWWWrubble WWWWWWSWsalt5W8Wsaltmarshwell-stratifiedsiltandsmallpebblespoorlydra5V8VsandWWWWWWWWWWWWWWWWWWWWWWW#W$W'W(W)W*W+W,W-W.W/W0W1W2W3W7W<W=W>W@WAWBWTWWWAdepositsofmasswastinglandslidedepositsVVVdepositsofmasswastingmudflowanddebris-flowdepositsVVdepositsofmasswastingprotalusramparts Vdepositsofmasswastingtalus VdiamictonWWdike4WdikesWWWWWWW W WWWWdioriteW!W*W6WWWWWdioriteofpointbedeVVdiroiteWdogfishWWdriftW@WAWFWHWIWKWMWPW^WaWdWnWWWWWWdriftofalaskanglaciation^VdriftriverdeltaVdriftriverdeltamudflowdepositsundifferentiatedVdune<Wdunes=eklutnaWWWWelevated+W.W9W:Welevatedtidalsiltandbeachdeposits9V:VeliasWWWeolian>Weoliandeposits>VUpossession<WpossiblyWWrWsWpostvWxWWpostglacialWBWpotassiumWpoulWWWpre-existing Wpre-skilakvWxWpredominanceWWWpredominantWWWWpredominantlyWWWWWWWWWWWPWWpredominantlyalluviumdepositedbynonglacialstreamsandoVVVVpredominantlyglacialmoraineandoutwashdepositsandbeachVpredominantlylayeredvariablyserpentinizeddunitecontainiVpredominantlymetasedimentaryrockswithwell-developedgneiPVpredominateWWpredominatelyWpreexistingW Wprehnite.W/Wprehnite-pumpellyiteWWWWWW,WpresenceWWWDWykn007܂ނ炀kn008݂킀 %&/7;BMPSTZejlnqt{~ǂ6kn009肁5}kn010kn011\Z)kn0139kn014kn015mi002傁邁킁mi003sr002悁ς݂ނ傁 #%&0;@Hsr004め(̂͂ڂۂ !"./:FGMsr005҂ӂԂՂւׂめ肂 sv002߂Ă삂+,2347J[fjxsv004.8Q[_fkƂ^`beimoqsuw~sv005]Ysv007 :Dhpswxz}?sv009sv010삂4 '(@₀` ‚"‚$ʂ‚&˂‚(‚*؂‚1‚2‚4ق‚6!‚8‚:9:fDQPoorly- to well-sorted silt, sand, and gravel in terraces and outwash fans plainsGSV004H509ISeldoviaJUnconsolidatedK131N1310gAQaoB!Outwash and valley train depositsCQuaternary, HoloceneD@Graded to moraines of Alaskan age and to existing glacier frontsGKN013H412IKenaiJUnconsolidatedK131N1310hAQaoB!Outwash and valley train depositsCQuaternary, HoloceneD@Graded to moraines of Alaskan age and to existing glacier frontsGSV007H412ISeldoviaJUnconsolidatedK131N1310iAQgnB%Glacial deposits, Naptowne GlaciationC QuaternaryDcModerately weathered moraine along shoreline; heavily spruce and brush covered; Naptowne GlaciationGKN005H507IKenaiJUnconsolidatedK135N1353jAQblB+Glacial deposits of the Naptowne glaciationC QuaternaryD_Loop, recessional, lateral, and medial moraine and other deposits of the Brooks Lake glaciationGKN008H835IKenaiJUnconsolidatedK135N1353kAQgnB%Glacial deposits, Naptowne GlaciationC QuaternaryNythese@WAWaWdWWWWWWWWWWWWWW#W&W(WHWIWWWWWthick`WWWWWWWWWWWWWW WthickandthintabularbodiesofalteredtholeiiticbasaltpVthick-beddedWWWWWWWWthickeningWthickerWWWthickestWthicknessFWIWWWWWthicknessesvWxWthinWWWWWWWWWWWWWWWWWthin-beddedWWthin-sectionWWWthinningWthirdWthisWWWWWWWWWWWWWWWWWW WWWW#WtholeiiticWWthoughtBWTWthroughoutWWWWti3aWti3bWtidalWW'W(W2W3W4W9W:WtidalsiltandbeachdepositsVVtideWtidewaterWWtightWtightlyWWW kDcModerately weathered moraine along shoreline; heavily spruce and brush covered; Naptowne GlaciationGSV004H507ISeldoviaJUnconsolidatedK135N1353lAQblB=Glacial deposits of the Naptowne glaciation - ground moraine?C QuaternaryD>Probably ground moraine deposits of the Brooks Lake glaciationGKN008H8351IKenaiJUnconsolidatedK135N1353mAQnBMoraines of Naptowne GlaciationCQuaternary, PleistoceneDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGKN013H403IKenaiJUnconsolidatedK135N1353nAQw4BBrooks Lake drift, Iliuk StadeCQuaternary, PleistoceneDBrooks Lake drift, Iliuk StadeGKN008H836IKenaiJUnconsolidatedK136N1360oAQntB.Moraines of Naptowne Glaciation, Tanya advanceCQuaternary, PleistoceneDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGKN013H404IKenaiJUnconsolidatedK136N1363pAQntB.Moraines of Naptowne Glaciation, Tanya advanceCQuaternary, PleistoceneglacialdepositsoutwashfansbVglacialdepositspebbleandboulder-bearingdiamictonVVglacialdepositsproglacialstratifieddrift@VAVdVglacialdepositsproglacialstratifieddriftactiveoutwashaVglacialdepositsstratifieddriftHVKVglacialdepositstunnelstadealaskanglaciationUV[VglacialdepositstustumenastadealaskanglaciationVV_V,Tqntopqntmvxqocfqpr qraqrgRSqs߂ႀ₀む肀邀킀qsbqsfTqsgPqsmOqsw%qt qtfqtgqtm;qts9:qtvqtyqu䂀傀悀ꂁqvqw4nsvsymboltanXYtbtd삁킁tf낂tg tgbƂȂtkbtkstkttkthtmtoc䂁傁悁tod togtogsقtoptops؂ڂ݂ႁtosʂ̂΂ςЂtosatosbtosbdtosctosdtosftosgtoss˂tosv܂ނtots邁tovtovstpstpvtrts‚tttwfĂłtyyellow낀1957W1966WWaWabandonedW Wabandonedchanneldeposits VabandonedorunderfitstreamchannelVactiveaWadvanceoWpWrWsWuWwWyWzWage?WCWDWWWWWWalaska`WpDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGSV007H404ISeldoviaJUnconsolidatedK136N1363qAQblnBBrooks Lake, Newhalen moraineCQuaternary, PleistoceneDAEnd moraine of the Newhalen advance of the Brooks Lake glaciationGKN008H837IKenaiJUnconsolidatedK137N1370rAQnsB/Moraines of Naptowne Glaciation, Skilak advanceCQuaternary, PleistoceneDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGKN013H405IKenaiJUnconsolidatedK137N1373sAQnsB/Moraines of Naptowne Glaciation, Skilak advanceCQuaternary, PleistoceneDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGSV007H405ISeldoviaJUnconsolidatedK137N1373tAQblilBBrooks Lake, Iliamna moraineCQuaternary, PleistoceneD@End moraine of the Iliamna advance of the Brooks Lake glaciationGKN008H838IKenaiJUnconsolidatedK138N1380uAQnkB/Moraines of Naptowne Glaciation, Killey advanceCQuaternary, Pleistocene|tqÃQ`rsÃQpuwÃQyzÃQvxÃQCDÃR?ÃR |}ÃR0ghÃR@ÃRP ÃR`9:ÃRpÃRÃRÃRÃS ÃS ÃS0ÃS@ÃUÃX#ÃX &ÃaÃa !"Ãa0낀삁Ãa@+.ÃaP58XÃa`U[TÃapV_UÃaikQVÃaNQRÃacfSWÃb Y;=Ãb L<Ãb0낂Ãb@ÃbPabÃb`C_`Ãbp]^ÃbcÃbdeÃbhiÃclmÃc noÃc0pqÃc@rsÃcPtuÃc`vwÃcpÃcÃc@BÃf`AÃqFNÃq GÃq0HÃq@@ÃqPaÃq`bÃqpÃqÃqÃqOÃr PÃr DÃr0Ãr@  ÃrP$$%Ãr`Ãrp)Ãr*Ãr2Ãr3Ãs4Ãs Ãs0{Ãs@ÃsPJÃs`IÃspÃsKÃsdÃs,ÃtÃt Ãt0AÃt@ÃtPÃt`Ãv0à Ã0Ã@0ÃPmoraineoniceNVQVmorainesGWJW`WmWoWpWrWsWuWvWwWxWyWzWWWWWWWWWWWWWmorainesofalaskaglaciation`VmorainesofcaribouhillsglaciationVVmorainesofeklutnaglaciationVVmorainesofknikglaciationVVVmorainesofnaptowneglaciationmVmorainesofnaptowneglaciationkilleyadvanceuVwVmorainesofnaptowneglaciationmoosehornadvanceyVzVmorainesofnaptowneglaciationskilakadvancerVsVmorainesofnaptowneglaciationtanyaadvanceoVpVmorainesofnaptowneglaciationterracedmorainesvVxVmountainWVVolderglacialdepositsLVonNWQWorWGWJWother$W)W*W,W2W3W4Wotherunconsolidateddepositsdeltadeposits4Votherunconsolidateddepositsnonvegetatedbeachdeposits*Votherunconsolidateddepositsnonvegetatedtidalmarshdepos3VuDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGKN013H406IKenaiJUnconsolidatedK138N1384vAQntmB2Moraines of Naptowne Glaciation, terraced morainesCQuaternary, PleistoceneDDiscontinuously mantled below about the 500-ft strandline level with proglacial lake sediments of post Moosehorn, pre-Skilak age. Mantled by various thicknesses of glaciolacustrine depositsGKN013H408IKenaiJUnconsolidatedK138N1384wAQnkB/Moraines of Naptowne Glaciation, Killey advanceCQuaternary, PleistoceneDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGSV007H406ISeldoviaJUnconsolidatedK138N1384xAQntmB2Moraines of Naptowne Glaciation, terraced morainesCQuaternary, PleistoceneDDiscontinuously mantled below about the 500-ft strandline level with proglacial lake sediments of post Moosehorn, pre-Skilak age. Mantled by various thicknesses of glaciolacustrine depositsGSV007H408ISeldoviaJUnconsolidatedK138N1384y:mudflowWWWWWmuskeg$Wnaknek[W\W]W^W_W`WaWbWcWnaknekformation[V\VnaknekformationchisikconglomeratemembercVnaknekformationlowersandstonemember]V^VnaknekformationpomeroyarkosememberaVbVWpWrWsWuWvWwWxWyWzWnatural&Wnaturalleveedeposits&VnewhalenqWnonmarine+Wnonvegetated*W3WnorthWofW W WWWWW?WCWDW^W`WjWlWmWoWpWrWsWuWvWwWxWyWzWWWWWWWWWWWWWWWWWWWW WWWJWKWoffshore-WolderWWLWWWolderalluviumVVolderdriftriverdeltamudflowdepositsVolderglacialdepositsLVonNWQWWophioliteWW WophioliteofglacierislandpillowbasaltVophioliteofglacierislandsheeteddikes VryandvolcanicrocksV3Vdiscontinuouslymantledbelowaboutthe500-ftstrandlinelevVxVdiscreteWdishWWdisplayW;W=Wdisplayed$W%WdisplaysWdissectedVW_WdistalWWdistanceWWdistantWWWdistinct/WdistinguishedWWWDWdistributaryWdistributedW9W:WdiverseWW,W0WdividedxWdoWdoestWuWdomeWdominantWWWWlWmWdominantly WWlWmWdominates WdoubleWdpositsWWdpositsofsmallsteepalluvial-colluvialfansinferredtobVVdrab7WdrainageWWdrained5W8Wdraining?WWWdrier#WyAQnmB2Moraines of Naptowne Glaciation, Moosehorn advanceCQuaternary, PleistoceneDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGKN013H407IKenaiJUnconsolidatedK139N1393zAQnmB2Moraines of Naptowne Glaciation, Moosehorn advanceCQuaternary, PleistoceneDPProminent and little modified morainal deposits, mantled by 2 to 6 feet of loessGSV007H407ISeldoviaJUnconsolidatedK139N1393{AQbloB*Outwash, Brooks Lake glaciation, undividedCQuaternary, PleistoceneD*Outwash, Brooks Lake glaciation, undividedGKN008H840IKenaiJUnconsolidatedK140N1400|AQnoB!Outwash and valley train depositsCQuaternary, PleistoceneD"Graded to moraines of Naptowne ageGKN013H411IKenaiJUnconsolidatedK140N1400}AQnoB!Outwash and valley train depositsCQuaternary, PleistoceneD"Graded to moraines of Naptowne ageGSV007H411ISeldoviaJUnconsolidatedK140N1400~AQdlBDeltaic depositsC QuaternaryD:Deltaic deposits, including outwash and alluvial deposits.outwashdepositscVfVparagneissPWpartaWpartiallyWpaveloffdWeWpeakJWKWpebbleWWpillowWWWWWWWWWWWWWWplugsWWWplutonicW'W)W5WWWplutonicrocksundivided)V5VVpogibshiWpointWWpomeroyaWbWportWportgrahamformationofkelley1980VportageWpossibleWpossiblebedrockofunknowncharacterVpoulWWWWWWWpoulcreekformationsedimentaryrocksundividedVVVpoulcreekformationvolcanicrocksundividedVVVWWWredwoodWWredwoodformationVVridges+W.WriverWWWWWWrockWSWrockavalanchedepositsVrockglaciersSVrocksWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW{ksolifluction@supraglacialmoraine@surficialdeposits@tidal@tunnel@ unconsolidated@#valdezgroupinterbeddedvolcanicandsedimentaryrocks@valdezgroupmetasedimentaryrocksundivided@valdezgroupsheetedbasaltdikes@volcanicrocksundivided@(volcano@chaotic@earlycretaceoustoearlyjurassicpliensbachian@ holocene@jholoceneandpleistocene@latecretaceous@latejurassicandorcretaceous@8pleistocene@quaternary@"!quaternaryholocene@quaternarypleistocene@quaternarytertiarytojurrassic@tertiaryandcretaceous@tertiarymiddletolate@to@E1000@15@25@S800@about@action@lallotriomorphic-gran@alluvial-colluvial@an@7and@andesite@angular@aquagene@ areasofmudflowdepositstendingtobeminimallyvegetated@6ash@foutwashdepositsassociatedwithmodernandholoceneglaciereVoverW WoveralllWmWoverbankWoverlain3WoverlyingWpW0WpWqWpaddyWpagunaWpaleWWWWWWWWWGWpaletodark-greenaphyrictoporphyriticcommonlyamygdaloiVVpaletodark-greenaphyrictoporphyriticfrequentlyamygdalVVpaleosurfaceWWWpamphlet0WparagneissPWparallelW W#WPWhWiWpartWWWWWWWWWWWWWW W WW]W^WrWsWvWwWWWpartiallyWVW_Wpartiallydissectedmoraine1-6-mileinfrontofpresentglaVV_VpartiallysubmergedalluvialfansconsistingofsandandgraVparticlesZWparticularlyWpartlyWWW W!W"WdatoneuplandVVpebble-sized WpebblesWW5W8WpebblyWWWWWWWpegmatitic W!W~GKN008H870IKenaiJUnconsolidatedK170N1700AQdcB9Glacial deposits -- Pebble- and boulder-bearing diamictonC QuaternaryDPebble- and boulder-bearing diamicton. Observed at one upland location at West Foreland and in sea cliffs along West Foreland and from Katchin Creek south to near Redoubt Point.GKN006H606IKenaiJUnconsolidatedK190N1900AQdc?B9Glacial deposits -- Pebble- and boulder-bearing diamictonC QuaternaryDPebble- and boulder-bearing diamicton. Observed at one upland location at West Foreland and in sea cliffs along West Foreland and from Katchin Creek south to near Redoubt Point.GKN006H633IKenaiJUnconsolidatedK190N1900AQkBMoraines of Knik GlaciationCQuaternary, PleistoceneD4Moraines of Knik Glaciation. Prominent but modifiedGKN013H416IKenaiJUnconsolidatedK190N1903AQeBMoraines of Eklutna GlaciationCQuaternary, PleistoceneD@Moraines of Eklutna Glaciation. Subdued and moderately modifiedGKN013H419IKenaiJUnconsolidatedK190N1903more?WWWWWW WWW0W;W=W@WBWCWmostWWWWWWW W W WW#W0WWmostlyWWWWWWWWWWWWWWWWWW-W0WGWWWmostlybiotitetonalitebutalsoincludesbiotite-muscoviteVmostlybiotitetonalitebutalsosomebiotite-muscovitegarnVmostlybiotitetonaliteweaklyfoliatedsyn-dplutonsVcrocksVVmountWWPWWmountainCWDWWWWWWmountainsWWWmouthW?WmtWmuchUW[WWWWWWWWWWWmuckBWmud0W1W6WmudflowWWWWWmudflowanddebrisflowdepositsmayincludesomevolcanicmVVmudflowsWmudstoneWWWWWWWWWWWWWWWWWWWWWWWmudstonesWWWrineWWWWAQkBMoraines of Knik GlaciationCQuaternary, PleistoceneD4Moraines of Knik Glaciation. Prominent but modifiedGSV007H416ISeldoviaJUnconsolidatedK190N1903AQeBMoraines of Eklutna GlaciationCQuaternary, PleistoceneD@Moraines of Eklutna Glaciation. Subdued and moderately modifiedGSV007H419ISeldoviaJUnconsolidatedK190N1903AQkBMoraines of Knik GlaciationCQuaternary, PleistoceneD4Moraines of Knik Glaciation. Prominent but modifiedGSV007H416ISeldoviaJUnconsolidatedK190N1903AQktBTerraced moraines of Knik ageCQuaternary, PleistoceneDaTerraced moraines of Knik age. Discontinuously manlted below the about 750 foot strandline levelGKN013H417IKenaiJUnconsolidatedK194N1943AQetB Terraced moraines of Eklutna ageCQuaternary, PleistoceneDTerraced moraines of Eklutna age. Discontinuously manlted below the about 1,000 foot strandline level with proglacial lake sediments of Knik and Naptowne ageGKN013H420IKenaiJUnconsolidatedK194N1943AQkt#BTerraced moraines of Knik ageCQuaternary, PleistoceneDaTerraced moraines of Knik age. Discontinuously manlted below the about 750 foot strandline levelGSV007H417ISeldoviaJUnconsolidatedK194N1943AQetB Terraced moraines of Eklutna ageCQuaternary, PleistoceneDTerraced moraines of Eklutna age. Discontinuously manlted below the about 1,000 foot strandline level with proglacial lake sediments of Knik and Naptowne ageGSV007H420ISeldoviaJUnconsolidatedK194N1943AQkoB!Outwash and valley train depositsCQuaternary, PleistoceneDBOutwash and valley train deposits. Graded to moraines of Knik ageGKN013H418IKenaiJUnconsolidatedK195N1953AQeoB!Outwash and valley train depositsCQuaternary, PleistoceneDEOutwash and valley train deposits. Graded to moraines of Eklutna ageGKN013H421IKenaiJUnconsolidatedK195N1953AQkoB!Outwash and valley train depositsCQuaternary, PleistoceneDBOutwash and valley train deposits. Graded to moraines of Knik ageGSV007H418#tunnelUW[WturbiditesWtustumenaVW_WtuxednijWkWlWmWnWoWpWqWrWsWtWuWvWwWtuxedniformationjVkVtuxednigroupbowserformationlVmVtuxednigroupcynthiafallssandstonepVqVtuxednigroupfitzcreeksiltstonerVsVtuxednigroupgaikemasandstonetVuVtuxednigroupredglacierformationvVwVtuxednigrouptwistcreeksiltstonenVoVtwinWtwistnWoWtyonekWWWtyonekformationVVtyonekformationandhemlockconglomerateundividedVtypicalWultramafic&W'W(WGWHWIWWultramaficplutonicrocksV<W=WCWunit6WunknownWvaldezWWWWWW W W"W$W%W(W7W8W9W:W;W<W=W@WAWBWCWDWGWvaldezgroup7V8Vvaldezgroupgabbro V"V$V%VvaldezgroupgreenstoneDVvaldezgroupinterbeddedmetavolcanicandmetasedimentaryroAVV"quaternaryWWWWWWWWWWWWWWWWWWWWWWW!quaternaryWWWWWWWWWWWWWWWWWWW W  WWWWWWWWW !W"W#W$%&'W(W)W*W+W,W-W.W/W0W1W2W3W4W5W6W78W9W:W;W<W=W>W?W@ABCWDWEFGHIJKLWMNOWPQRSWTUVWWXWYWZW[\W]W^W_`WabcdeWfgWhWijklmWnWoWpWqWrWsWtWuWvWwWxWyWzW{W|W}W~WWWWWWWWWW&ISeldoviaJUnconsolidatedK195N1953AQeoB!Outwash and valley train depositsCQuaternary, PleistoceneDEOutwash and valley train deposits. Graded to moraines of Eklutna ageGSV007H421ISeldoviaJUnconsolidatedK195N1953AQcB$Moraines of Caribou Hills GlaciationCQuaternary, PleistoceneD7Moraines of Caribou Hills Glaciation. Greatly modifiedGKN013H422IKenaiJUnconsolidatedK200N2000AQcB$Moraines of Caribou Hills GlaciationCQuaternary, PleistoceneD7Moraines of Caribou Hills Glaciation. Greatly modifiedGSV007H422ISeldoviaJUnconsolidatedK200N2000AQctB&Terraced moraines of Caribou Hills ageCQuaternary, PleistoceneDTerraced moraines of Caribou Hills age. Discontinuously mantled below the about 1,000 foot strandline level with proglacial lake sediments of Eklutna?, Knik, and Naptowne ageGKN013H423IKenaiJUnconsolidatedK201N2010AQsbBScoured bedrockC QuaternarytunnelUW[WturbiditesWWWW7W<WturbidityWWWturbitdites--mudstonWtustumenaVW_WWtuxednicWtwinWtwistjWtwoWWWW$W%W&W(W@WBWHWIWtwonorth-south-trendingplutonsofmediumtocoarse-grained$V%Vtwo-thirdsWWtypeWWtypesWWWWWWlWmWtypical WLWMWtypicallyWBWWWWW,WDWLWMWtysdalWWultramafic&W'W(WHWunakwikWuncertainWWunconsolidatedWWWunconsolidateddepositsVunderWWunderfitWunderlainW(WHWIWunderlyingCWDWWWvWwWundifferentiatedWWWMWYWZWundifferentiatedboulderscobblesgravelsandsiltandclayVVundifferentiatedglacialdriftMVundividedWWWWWWWW{WW5W9W:WyWWhillsWWWhintsWhistoricWholoceneW\W]WeWWWholocenevolcanicrocksprimarilyassociatedwithredoubtvoVhomogenousNWhomogenouspeliticschistandminoramphiboliteincludesspoNVhornblendeWWWWWWW WWWWWWWW W"W$W%W'WDWhornblende-biotiteWW6WWhornblenditeWhornfelsWWWWWhostWhoweverW WWPWfWjWtWuWhydrothermallyWhypersthene-augiteWWhypidiomorphicWWWhypidiomorphic-granu WWWice-contactHWKWice-stagnation\W]WicefieldWWidentifiedHWKWigneousWWWW.W9W:WLWMWpWqWtWuW#*dDiGlacially scoured bedrock; may be covered with thin glacially derived deposits; air-photo interpretation.GKN008H834IKenaiJUnconsolidatedK275N2750AQfB0Other unconsolidated deposits -- artificial fillCQuaternary, HoloceneD;Artificial fill at Drift River and West Foreland facilitiesGKN006H615IKenaiJUnconsolidatedK295N2950AQvBVolcanic rocks, undividedC QuaternaryDKLava flows and associated pyroclastic rocks associated with Iliamna VolcanoGSV002H105ISeldoviaJIgneousK300N300AQvBVolcanic rocksC!Quaternary (with mixed Tertiary?)DPLava, breccia, and associated pyroclastics. May include Tertiary volcanic rocksGKN002H300IKenaiJIgneousK300N3000AQvB!Volcanic rocks of Redoubt VolcanoC QuaternaryD!Volcanic rocks of Redoubt VolcanoGKN007H704IKenaiJIgneousK300N3000AQvBVolcanic rocks, undividedC Quaternary.tertiaryWWWtexturalW Wtexturally'WtextureWWW W!W;W=WtexturedPWtexturesWW WWtgW=volcanicrocksundividedVVvolcaniclasticWg W WWWWWWwestWWWwestforelandformationVVVyakatagaWWyakatagaformationVVyoungerYWWWWyoungerdriftriverdeltamudflowdepositspriorto1957VyoungerglacialdepositsundividedYVandWWWWWW/W;WLWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWchaoticWdepositsWearlyWWWWWWWWeoceneWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWeoceneandpaleoceneVVVVVeoceneandpaleocenechaoticdepositslithofaciesfVfWWW*-{AQvBQuaternary volcanic rocksC QuaternaryD/Volcanic rocks of Iliamna and Redoubt volcanoesGKN012H1202IKenaiJIgneousK300N3000AQilBIliamna Lava flowsC QuaternaryDXLight-gray hypersthene-augite andesitic lava, breccia, and associated pyroclastic debrisGKN005H511IKenaiJIgneousK305N3050AHvBHolocene volcanic rocksCQuaternary, HoloceneDBHolocene volcanic rocks, primarily associated with Redoubt VolcanoGKN008H855IKenaiJIgneousK305N3050AQilBIliamna Lava flowsC QuaternaryDXLight-gray hypersthene-augite andesitic lava, breccia, and associated pyroclastic debrisGSV004H511ISeldoviaJIgneousK305N3050AQtvB0Lava flows, North and South Twin volcanic centerC QuaternaryDMLava flows from the North and South Twin volcanic center. Probably andesiticGSV005H555ISeldoviaJIgneousK305N3050AQcaBAsh-rich colluviumCQuaternary, Holocene&)IAConsists of volcanic rocks and deposits associated with Iliamna, Redoubt, and Double Glacier volcanoes. Typically restricted to immediate vicinity of these volcanic centers, however locally, debris flows and air-fall material may be somewhat distal. Locally subdividedGKN008H850IKenaiJIgneousK300N3000AiceNWQWicefieldWWicewormJWKWiliamnatWWWiliamnalavaflowsVViliuknWinWinterbeddedWWWW@WAWBWintermediateW4Wintermediatedike4VintermediatefelsicandmaficdikesVinterstratified1Winterstratifiedgraywacke-argilliteandvolcanicrocks1Vintrusive W6Wintrusiverocks VislandWW Wjurassic{Wjurassicbedrock{Vkaguyak+Wkaguyakformationnonmarinesedimentaryrocks+VkamishakWkamishakformationVkelleyWCWDWnWqWtW{Wlandslide WWWWWWWlandslideandcolluvialdeposits VVlandslidedepositsVVlandslideslateralGWJWWWlavaWWWWlavaflowsVlavaflowsnorthandsouthtwinvolcaniccenterVleucocraticWleucocraticgraniteVlevee&WlithofaciesWWWWWmaficWWWWWWW'W-0AQlsB.Deposits of Mass Wasting -- landslide depositsC QuaternaryDDeposits of landslides, including falls, slumps, slides, and failures by lateral spreading. Assigned NSA = 312 in vicinity of Polly Creek where this unit consists of debris flows from Mount Redoubt.GKN006H635IKenaiJIgneousK312N3120AQmBDebris flow depositsCQuaternary, HoloceneDDebris flow deposits of Crescent River valley. Includes several small (older?) deposits in the upper valley and the 3,500-year-old debris flow in the lower valleyGKN007H703IKenaiJIgneousK312N3120AQdf2B)Debris flow deposits, older Redoubt flowsCQuaternary, Holocene),ZAConsists of tephra-rich colluvium in the vicinity of and west of Redoubt volcano. Similar to other volcanoes, these deposits probably consist of ash and larger-sized pyroclasts. On the flank of Redoubt Volcano, these deposits mantle and are incorporated in deposits that reflect Holocene glaciation. West of the volcano, they mantle bedrock and older glacial deposits. East of the volcano, they apparently cover one long low ridge -- this is apparently an erosional remnant as other ridges B/to the east do not seem to have these deposits.GKN008H861IKenaiJIgneousK311N3110'terminalWWWWWGWJWWWterminallateralandgroundmoraineunsortedboulderscobbleWVterraceWWW;WterracegravelsinoutwashabovemodernfloodplainsairphotVterracedCWDWWWWWWterracedmorainesofcaribouhillsagediscontinuouslymantlVterracedmorainesofeklutnaagediscontinuouslymanltedbelVVterracedmorainesofknikagediscontinuouslymanltedbelowVVterracesWWWW0W1WHWKWcWfW02AQdf1B+Debris flow deposits, younger Redoubt flowsCQuaternary, HoloceneADebris flow deposits of North Fork, Crescent River. Deposits of the youngest, most extensive, and probably most fluid debris flow derived from southwest flank of Redoubt Volcano. Flow was apparently derived from a presently glacier free valley draining south from Redoubt. This debris flow has been dated at 3,500 yrs. BP, young enough to possibly explain lack of glaciers in the source valley, as all surrounding valleys have extensive glaciers and glacial deposits. This debris flow extenBhds to coast of Cook Inlet and back flowed up the main fork of the Crescent River, creating Crescent LakeVFSRadiocarbon date of about 3,500 yrs. BP on youngest and most extensive debris flow.GKN008H8622IKenaiJIgneousK312N3122AQlBLahar depositsCQuaternary, HoloceneDLahar depositsGKN011H1162IKenaiJUnconsolidatedK312N3120AQdfnB+Debris flow deposits, younger Redoubt flowsCQuaternary, Holocene,/VADebris flow deposits of North Fork, Crescent River. Deposits of multiple debris flows off the west and southwest flanks Redoubt Volcano. Oldest(?) deposit is derived from west flank of Redoubt. Next oldest deposit appears derived from presently glaciated valley draining to the southwest off Redoubt. These deposits are of relatively limited extent. They may have dammed the North Fork of the Crescent River, creating a temporary lake in the valleyFSRadiocarbon date of about 3,500 yrs. BP on youngest and most extensive debris flow.GKN008H8621IKenaiJIgneousK312N3121footWWWWWforWW W0WJWKWforaminifersWforeland@WAWaWdWWWWWWforeset-bedded@WAWaWdWforestWforkWWformWWWWGWJW W&WformalxWformationWWWWWWWWWjWlWmWpWqWtWuWvWwWxWyWzW{WWWWformationsWjWformedWWWformer'W(WformingW WformsWWWWW/WCWGWlWmWWWWWWWWWWWWWWWWfrontUWVW[W_WfrontsgWhWfrostWftWWWWWWWWWgallonsWWgenerally`WWWWWglacialWWWWWWWWWWWWWWWBWLWMWXWYW\W]WWWWglacialdepositsLVXVYVglacialdepositsandvolcanicandplutonicrocksundividedV/5DTDebris flow deposits on the north flank of Redoubt Volcano in the Drift River valleyGKN008H862IKenaiJIgneousK312N3122AnoneBQAreas in Drift River valley subjected to flood scour or deposition by 1966 floodsCQuaternary, HoloceneDQAreas in Drift River valley subjected to flood scour or deposition by 1966 floodsGKN007H706IKenaiJUnconsolidatedK313N3130ApatternBOAreas on Drift River delta subjected to flood scour or deposition prior to 1966CQuaternary, HoloceneDdAreas on Drift River delta subjected to flood scour or deposition in the several decades before 1966GKN007H708IKenaiJUnconsolidatedK313N3130AQdr1B8Younger Drift River delta mudflow deposits prior to 1957CQuaternary, HoloceneDkAreas of mudflow deposits, tending to be minimally vegetated and relatively close to channel of Drift RiverGKN008H8632IKenaiJUnconsolidatedK313N3130AQdr2B(Older Drift River delta mudflow depositsCQuaternary, HolocenedebrisflowdepositsVdebrisflowdepositsolderredoubtflowsVdebrisflowdepositsyoungerredoubtflowsVVdebris-flowWWedepositsoflandslidesincludingfallsslumpsslidesandfaiVVVdepositsoflargeflatalluvialfansinferredtobemoderateVdepositsofprotalusramparts Vdeposits--fine-grain6WderivedWWWTWWWWQWTWtWuWribedWWWdescribedbywinklerandplafker1981p18asfollowsapromVdescriptionWW(W0WIWdescriptionfromclark1981p3-4themchughcomplexisahe0VdetailWW0Wdetermined WdettermanpWqWdeuteric6Wdeveloped;W=WdevelopmentRWUWdiabaseWW'WdiabasicWWWW W WdiameterWWdiamictiteWWdiamictonWW^WWWdiatomsWWdiffer@WBWdifferencesWWWdifferingW WdikeWW4WdikelikeGWdikesWWWWWWWWWWWWWWWWWWW W W WW#W$W%W&WCWDWOW28DwAreas of mudflow deposits, tending to be more heavily vegetated and tending to control location of Drift River channelsGKN008H8631IKenaiJUnconsolidatedK313N3130AQdrB4Drift River delta mudflow deposits, undifferentiatedCQuaternary, HoloceneDSAreas of mudflow deposits, not easily separatable into the Younger and Older eventsGKN008H863IKenaiJUnconsolidatedK313N3130AQavBVolcanic avalanche depositsCQuaternary, HoloceneAVolcanic avalanche deposits consisting of poorly sorted mixture of angular sand, cobbles, and boulders. All deposits contain clasts of gray andesitic lava and yellow-orange hydrothermally altered rocks. Estimated age is less than 1,000 years and some may be historic (< 200 years)GKN011H1164IKenaiJIgneousK314N3140AQvBQuaternary volcanic rocksCQuaternary, PleistoceneDdComposite dome complex consisting of medium- to coarsely porphyritic hornblende andesite and dacite. areasofmudflowdepositstendingtobeminimallyvegetatedVareasofmudflowdepositstendingtobemoreheavilyvegetatVareasondriftriverdeltasubjectedtofloodscourordeposVareasthatairphotointerpretationsuggestasbeingunderlaVarenaceousdWeWhWiWrWsWvWwWarenacousfWargillaceousWargilliteWWWWWWW,W-W0W7W8W;W<W=WQWTWWWark-grayWarkose-W0W[W\WaWbWarkoseconglomeratesandstonesiltstoneandshale[VarkosicWW]W^WaWbWvWwWartificialWartificialfillatdriftriverandwestforelandfacilitiesVasWWWWWWWUWZW[WWWWWWWWWWWWWWWWWWWWW WWW!W&W4W7W9W:WlWmWnWoWtWuWzWWWineasmuchas1-mileinfrontofpresentglacierUV[VIanWWWWWWWWWWWW0WWWWWWWWWWWWWWWWWWWWWWWWWWWW WWWWWWWWWW#W$W%W'W(W)W*W+W,W-W.W/W0W1W2W3W4W5W6W7W8W9W:W=W>W?W@WAWBWCWDWFWHWIWKWNWPWQWSWTWVWWW\W]W^W_WaWcWdWeWfWgWhWiWjWkWmWoWpWrWsWuWwWyWzW~WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW59F\Three K-Ar whole-rock ages, two considered minimum ages at 627 and 763 ka and one of 887 ka.GKN009H901IKenaiJIgneousK402N4020ATsBSterling FormationCTertiary, Pliocene and MioceneDwInterbedded, weakly lithified sandstone, siltstone, mudstone, carbonaceous shale, lignite coal, and minor volcanic ash.GSV002H80ISeldoviaJ SedimentaryK540ATksBSterling FormationCTertiary, Pliocene and MioceneD#Sandstone, siltstone, and some coalGKN002H540IKenaiJ SedimentaryK540ATksBSterling FormationCTertiary, Pliocene and MioceneD#Sandstone, siltstone, and some coalGSV010H107ISeldoviaJ SedimentaryK540ATbBBeluga FormationCTertiary, MioceneDoInterbedded, weakly lithified sandstone, siltstone, mudstone, carbonaceous shale, coal, and minor volcanic ash.GSV002H78ISeldoviaJ SedimentaryK545ATkbBBeluga FormationCMioceneDSandstone, siltstone, and coalGSV010H108ISeldoviaJ SedimentaryK545ATkB Kenai GroupCTertiary8<D}Coal-bearing semi-consolidated silt, sand, and gravel near Tustumena Glacier. Possibly equivalent to the Sterling Formation?GKN003H3560IKenaiJ SedimentaryK560ATkBKenai FormationCTertiary, EoceneD4Semiconsolidated coal-bearing silt, sand, and gravelGKN013H300IKenaiJ SedimentaryK560ATkBKenai FormationCTertiary, EoceneD4Semiconsolidated coal-bearing silt, sand, and gravelGSV007H300ISeldoviaJ SedimentaryK560ATkBKenai FormationCTertiary, EoceneDInterbedded, poorly consolidated sandstone, siltstone, claystone, and minor amounts of conglomerate. Contains many beds of subbituminouos coal and ligniteGKN014H143IKenaiJ SedimentaryK560AbTBTertiary bedrockCTertiaryDlKenai Group and West Foreland Formation; nonmarine sandstone, siltstone, shale, and claystone and local coalGKN006H621IKenaiJ SedimentaryK561AbT?BTertiary bedrockCTertiaryDlKenai Group and West Foreland Formation; nonmarine sandstone, siltstone, shale, and claystone and local coalÄRQÄRRÄdYÄfD(ÄblÄ2Ä3ÄBÄCÄ$ą"AZą"E blyingWW'WWWWWWWWWWWWWWWW W$W9WEWLWVVVVVVVVVVVVV V$Vcordova邀ꂀ낀삀 !"#-016=>LOWXY^‚ÂȂɂЂт߂ႁ₁悁炁ꂁ'(islandWWWWWWWkenai܂݂ނႀ炀肀킀  $%&)*+,/234579;WconglomerateWWWWWWWconglomerateandsubordinatesandstonesiltstoneandcoalVconglomeraticWconsist2W3WFWIWWconsistingWWWWWWW)W*W,WWWconsistsWWWWWWWPWWWWWWWconsistsofdiversemarineandglaciomarineclasticrocksinVVconsistsoftephra-richcolluviuminthevicinityofandwesV<DCDConsists of diverse marine and glaciomarine clastic rocks. Interbedded gray to dark-gray and greenish-gray siltstone, mudstone, and sandstone predominate in lower third of formation. Till-like diamictite dominant rock type in upper part of formation.GMI003H215ICordovaJ SedimentaryK565ATtBTyonek FormationCTertiary, Miocene and OligoceneD;Conglomerate and subordinate sandstone, siltstone, and coalGSV002H81ISeldoviaJ SedimentaryK600ATktBTyonek FormationCMiocene and OligoceneD,Sandstone, siltstone, coal, and conglomerateGSV010H106ISeldoviaJ SedimentaryK600ATkthB5Tyonek Formation and Hemlock Conglomerate (undivided)CTertiary, Miocene and OligoceneD&Sandstone, conglomerate, and siltstoneGKN002H630IKenaiJ SedimentaryK630N2750ATrBRedwood FormationC Tertiary, Pliocene to Oligocene?CFDLower sandstone member: about two-thirds thick-bedded sandstone and one-third silty sandstone and siltstone. Upper member: about one-half siltstone, mudstone and claystone, the rest is conglomerate and sandstone.GCV003H230ICordovaJ SedimentaryK675ATrBRedwood FormationC#Tertiary, Oligocene (?) and MioceneAMarine siltstone, sandstone, and conglomerate. The sandstone member consists of about two-thirds thick-bedded sandstone and one-third silty sandstone and siltstone. The characteristic conglomeratic beds show complete gradation from coarse, clast-supported conglomerate to matrix-supported conglomeratic mudstone and sandstone in which coarse clasts are suspended in the matrix. The siltstone, mudstone, and claystone are similar in appearance to parts of the underlying Poul Creek Formation,Bw but they contain few or no concretions, no glauconitic or volcanic beds, and are sandier and more resistant to erosioneEmollusks, and foraminiferaGCV002H30ICordovatoWWWWWW,W2W3W[WjWxWWtoarcianxWWtriassic3WWWWunknownwithW0W0.3WW0.8WW1W WW1-6-mileVW_W1-inPW1-mileUW[W109W:WWWW WWWWWPWlWmWpWqWtWuW100-ft-wide#W100-m-thicklWmW75WW1977W1978WW1981WWW1985W1992 W1:1W2`WmWoWpWrWsWuWwWyWzWWWWWWWW2-mW20WW W200W25WWWW3WW W W30WW300W300-700WWW312WW34-maW35W3500W3500-year-oldW45WW4918W5WWWWWWWW50W500-ftvWxW6`WmWoWpWrWsWuWwWyWzWW W7.57WW75WWW750WW8WWW W80 WIWDHJ SedimentaryK675ATpsB3Sedimentary rocks, undivided (Poul Creek Formation)C(Tertiary, Miocene, Oligocene, and EoceneAConcretionary pyritic, and glauconitic reddish-weathering, dark-gray to greenish-gray siltstone, claystone, and sandstone with subordinate dark-brown, laminated organic-rich shale, and gray calcareous sandstone; also includes thin interbeds of basaltic tuff locally. Occurrence of shales as much as 800 ft thick that have high organic-carbon contents (as much as 7.57 percent), extractable petroleum (0.8 gallons per ton), abundant glauconite, and common pyrite are suggestive of deposition inB part under conditions of restricted bottom circulation. Intercalated basaltic fragmental rocks and less common pillow basalt (unit Tpv) indicate episodic submarine mafic volcanism in the basin.Emollusks, and foraminiferaGMI002H235IMiddleton IslandJ SedimentaryK680ATpsB2Poul Creek Formation: Sedimentary rocks, undividedhsedimentaryrocksundividedpoulcreekformationVsedimentsCWDWseldoviaWseldoviametamorphiccomplexVshaleWsheetedWWWWW W WsillsWsiltWW9W:WsiltstoneWW_W`WdWeWhWiWnWoWrWsWskilakrWsWslopeWslopedepositsundifferentiatedVsmallWWsnug_W`WFJC(Tertiary, Miocene, Oligocene, and EoceneDConcretionary, pyritic, glauconitic, reddish-weathering, dark-gray to greenish-gray siltstone, claystone, and sandstone; shale that is rich in organic material; gray calcareous sandstone; local thin interbeds of basaltic tuff.GCV003H235ICordovaJ SedimentaryK680ATpsB3Poul Creek Formation: Sedimentary rocks, undividedC(Tertiary, Miocene, Oligocene, and EoceneAConcretionary pyritic, and glauconitic reddish-weathering, ark-gray to greenish-gray siltstone, claystone, and sandstone with subordinate dark-brown, laminated organic-rich shale, and gray calcareous sandstone; also includes thin interbeds of basaltic tuff locally. Occurrence of shales as much as 800 ft thick that have high organic-carbon contents (as much as 7.57 percent), extractable petroleum (0.8 gallons per ton), abundant glauconite, and common pyrite are suggestive of deposition in JQCATpsB2Poul Creek Formation: Sedimentary rocks, undividedC(Tertiary, Miocene, Oligocene, and EoceneDConcretionary, pyritic, glauconitic, reddish-weathering, dark-gray to greenish-gray siltstone, claystone, and sandstone; shale that is rich in organic material; gray calcareous sandstone; local thin interbeds of basaltic tuff.GMI003H235IMiddleton IslandJ SedimentaryK680ATtBTokun FormationCTertiary, EoceneA'Consists predominantly of concretionary siltstone and lesser, variable amount of interbedded sandstone. Siltstone is medium to dark gray and nearly massive. Spheroidal calcareous concretions as much as 1 m in maximum dimension are distributed randomly or along bedding surfaces in the siltstone.'GCV003H240ICordovaJ SedimentaryK810ATtBTokun FormationCTertiary, Oligocene and EoceneHIBpart under conditions of restricted bottom circulation. Intercalated basaltic fragmental rocks and less common pillow basalt (unit Tpv) indicate episodic submarine mafic volcanism in the basin.Emollusks, and foraminiferaGCV002H35ICordovaJ SedimentaryK680dgreatlyWWgreenWWWWWWW W W!W"WEWFWLWMWjWpWqWtWuWWsivemediumtocoarse-grainedandlocallypegmatiti V"Vgreentodark-grayfine-grainedfinelylaminatedtuffwithpEVFVgreenish-grayWWWWWWpWqWgreenschistWW9W:W<W@WBWDWEWFWLWMWQWTWgreenschist-faciesNWgreenstoneWWWWWWWW-WDWgreenstones0WgrooveWWWgroundWWWWWW^WlWgroundmassWWgroupWWWWWWWWWWW WWW W!W"W#W&W(WHWIWJWKWQWTWhadWhanging?Whangingdeltaiccomplexesassociatedwithoneormorestrand?Vharbor$W%WhardWWWWWWWWhardingWWhartsockpWqWhasWWWWW$W%W/W;W=W@WBWpWqWWBNcommonlyWWWWWWWWWWWW WWWW W!W"W.W0WlWmWnWoWrWsWcomonly WcompleteWWcomplexWWWWWWWW0W4WWWWWcomplexesWWW W?WWcomplexlyWW,Wcomplexlydeformedtectonicassemblageofdiverselithologie,VcomponentPWcomposedWWWWWWWWWWWWWWWWWWWWWW W"W0W9W:W@WBWjWlWmWcompositeWcompositedomecomplexconsistingofmediumtocoarselyporpVcompositionWW W W WWWW!W0W;W=Wcompositionally'WpWqWcompositionsW W Wcomprise0WcomprisesWconcentratedvWwWconcretionaryWWWWWWconcretionarypyriticandglauconiticreddish-weatheringarkViuminthevicinityofandwesVqinterpretationWW WWinterpreted%WSWTWinterstitial;W=WinterstratifiedWW1Winterstratifiedgraywacke-argilliteandvolcanicrockshighl1Vintertidal4WintertonguesWintervalWWintervalsWWintoWW?WWWWWWWWWWWW W WNWOWPWfWjWxWudeWWW W$W%WintrudedWW W$W%WintrudesW#Wintruding#W4WintrusionsWWintrusiveW#WGWOWinwardWirregularWWWWWirregularlyGWisWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W WWW W!W"W&W'W(W/W0W7W9W:W@WBWDWHWIWLWMWPWfWjWlWmWnWoWpWL`concretionarypyriticandglauconiticreddish-weatheringdarVconcretionarypyriticglauconiticreddish-weatheringdark-grVVconcretionsWWWWW9W:WdWeWfWgWhWiWkWlWmWnWoWpWqWrWsWvWwWconditionsWWcone-shaped Wcone-shapeddepositsoftalusbeneathsteepbedrockslopes VconesWWconfinedtWuWWWWWWWWWWWWWWWWWWWW+W,W2W;W=W[W\WaWbWcWjWlWmWpWqWrWsWtWconglomerateandsubordinatesandstonesiltstoneandcoalVconglomeratesandstoneandsiltstonemostlytuffaceousVconglomeratesandstoneandsiltstonemostlytuffaceousinferVconglomeratesWWWWWWconglomeraticW-W.W/W0W9W:Wcongloverate9W:WconsideredWconsist2W3WFWIWWWWWW<WpWqWV_~consolidatedW>W?WnWoWconspicuousWconspicuouslyWWWconstant6WconstituteWWWconstitutesWtWuWconstructional-WcontactWWyWWcontactsWW'Wcontain4WWWWWWWWWW;W=WPWlWmWpWqWcontainingWWWPWfWlWmWWcresecentWdaciteWdammedWdarkWWdark-brownWWdark-grayWWWWWWWWWWWdark-grayflyschofthintothick-beddedsandstonepebblysaVdarkerWdatedWdatum9W:WdebrisWWW WWWWWWWWOWPWSWWWWWWWWWdebrisflowdepositsofcrescentrivervalleyincludesseverVdebrisflowdepositsofnorthforkcrescentriverdepositsoVVdebrisflowdepositsonthenorthflankofredoubtvolcanoiVdecadesWdeformedWWWQRATsBStillwater FormationCTertiary, EoceneDDense hard dark-gray siltstone. Where siltstone is carbonaceous, it has a coalike appearance; where its calcareous, it may be variegated from reddish brown to pale greenE foraminifersGCV003H256ICordovaJ SedimentaryK820ATsBStillwater FormationCTertiary, EoceneAThe dominant lithology is dense hard dark-gray siltstone. Where the siltstone is carbonaceous, it has a coaly appearance; where it is calcareous, the siltstone may be variegated in shades of reddish brown to pale green and usually contains foraminifers. The upper part of the formation indicates regressive shallow marine deposition. In this area the Stillwater intertongues with, and grades upward into, the shallow marine and nonmarine Kulthieth Formation. The Stillwater Formation is comBplexly deformed and is characterized by tight folds and shearing in incompetent strata; hence, its thickness can be only estimated to be at least 4,918 ft. IPgAA transgressive marine sequence. Consists predominantly of concretionary siltstone with a lesser and variable amount of interbedded sandstone, chiefly in the lower part of the formation. The siltstone generally is medium to dark gray and nearly massive; in places, thin beds and lenses of lighter gray brown-weathering calcareous siltstone and silty limestone occur within the darker siltstone. Interbedded sandstone in the Tokun, which generally is lighter gray than the siltstone, is micacB(eous, feldspathic, and brown-weathering.Ecrabs, and mollusksGCV002H40ICordovaJ SedimentaryK810PWEforaminifers, and mollusksGCV002H255ICordovaJ SedimentaryK820ATwfBWest Foreland FormationCTertiary, EoceneDzPoorly sorted polymictic conglomerate, graywacke, and siltstone; having interbedded tuff and local subaerial basalt flows.GSV002H79ISeldoviaJ SedimentaryK855ATwfBWest Foreland FormationCTertiary, Eocene and PaleoceneD9Conglomerate, sandstone, and siltstone; mostly tuffaceousGKN002H855IKenaiJ SedimentaryK855N2750ATkBKenai FormationC"Tertiary, Miocene and Oligocene(?)D^Tan to light-yellow-brown conglomerate, sandstone, and laminated siltstone; few thin coal bedsGSV004H513ISeldoviaJ SedimentaryK855ATwf?BWest Foreland FormationCTertiary, Eocene and PaleoceneDuConglomerate, sandstone, and siltstone; mostly tuffaceous, inferred from air photos, covered by thin glacial depositsGKN008H820IKenaiJ SedimentaryK855MQN2750ATkBKulthieth FormationCTertiary, Eocene arelativelyWWrelictWWreliefHWKWremainderWWremains6WremarkablyWremnantWremnantsEWFWreplacedWWWWWWW W!W"Wreported#WrepresentW0Wrepresenting4WWrepresentsWW(WNWresistantWtWuWresistantcliff-formingmassivetothin-beddedgraywackesantVuVtrictedWWW]W^WcWresurrectionWW W$W%W(W@WBWHWIWretreatWWWWWWWreworkedWWrhyoliteWrhythmically<WricciWWrich6WWWridgeW Wridge-forming/Wridges'W(W+W.W=WWrippleWWWriverWWWWWWW0W1W>WWWWWWWWWW/WriversW>WrockWWW WWWWWWRWSW^WWWWWWWWWWWWW'W/W9W:WGWPW!tillWFWGWIWJWNWQWZWtilldepositsintheformoflateralorterminalmorainesGVJVtill-likeWWtime9W:WtmWWWWWWWWW W WWW@WAWBWFWIWPWTWZW^W`WaWbWcWdWfWgWhWmWoWpWrWsWuWwWyWzW|W}WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWtogsWWtokunWWtonWWtonguesWtops>WWWtoscWtpvWWtrainWWWWtransgressiveWtransitionalWtuffWWWWWWWWWtuffaceousWWWWWWWWWtuffaceoussedimentaryrocksvolcaniclasticsandstoneandmiVV poorlysortedpolymicticconglomerategraywackeandsiltstonVpoorlytowell-sortedsiltsandandgravelinterracesandocVfVpoorly-beddedWporcellaniteWporphyriticWWWWWWWWWWWWWWWWWWW W W WWWWporphyroblastsPWporphyryWWWWWW9W:Wport&W(W@WBWHWIWportion0WW\'ATkBKulthieth FormationCTertiary, EoceneDIncludes at least 1,500 m of interbedded, massive to thin-bedded, coal-bearing arkosic sandstone, dark-gray to black carbonaceous siltstone and shale, and minor coal. Commonly intensely deformed into imbricated stacks of fault-bounded chevron folds.GCV003H250ICordovaJ SedimentaryK860ATosB*Orca Group -- Sedimentary rocks, undividedC(Tertiary, Paleocene and early Eocene (?)DDark-gray flysch of thin- to thick-bedded sandstone, pebbly sandstone, siltstone, mudstone, and locally conglomerate and limestone; sandstone is composed chiefly of quartz and plagioclase; conglomerate clasts are mainly felsic porphyry and graniteGBS004H13I Blying SoundJ SedimentaryK950ATossBOrca Group: SiltstoneC(Tertiary, Paleocene and early Eocene (?)RVAMassive to thin-bedded, coal-bearing, arkosic sandstone, dark-gray to black carbonaceous siltstone and shale, and minor coal. Sandstone and shale ratios in measured sections average about 1:1. Sandstone varies from massive intervals as much as 150 m thick to thin bedded and shaly. Bituminous to semi-anthracite coal in beds as much as 3 m thick is a conspicuous, but minor part of the sequence. Commonly intensely deformed into imbricated stacks of fault-bounded chevron folds with shearinBg and structural thinning and thickening of coal beds. Mostly nonmarine and has minor tongues of transitional marine strata lithologically similar to the underlying Stillwater Formation and overlying Tokun FormationEplants, and mollusks GCV002H250ICordovaJ SedimentaryK860 ÃȂÃʂ˂̂͂΂ςЂт҂ӂԂՂւà ؂قڂۂ܂݂ނ߂ႁ₁Ã0䂁傁悁炁Ã@邁Ä!Ä!"Ä!d킁Ä!Ä!Ä"FÄ"GÄ"H Ä# Ä# Ä#Ä#Ä$Ä$Ä$!Ä$1Ä$ !"#$%Ä$&GHIÄ$'(Ä'a)Ä'q*Ä*r+Ä2,-./01Ä22Ä23Ä54Ä5!5Ä5A6Ä8789:;<=>?Ä8@ABÄ8CDÄ8EFÄ8JKÄ8!LMNÄ8&OPQRSTUVWÄ:XÄAYZÄA![\ÄA#]^ÄA$_`ÄA%abÄA'cÄA1deÄA6fgÄAAhiÄBjkÄBlmÄBnoÄBpqÄBrsÄBtuÄBvwÄCaxyz{|}~ÄCbÄCcÄCdÄCvÄDÄEÄEÄEÄEÄE1ÄG!ÄQ*ÄQ1ÄT!ÄYÄYW/ Ã@XÄc1@leftWWWWWlensesWWWWWWWWWWlensingWWWlenticularWWWDWdWeWlWmWpWqWvWwWlessWWWWWWWWWW WWW.W;W=WLWMWPWtWuWlesserWWWleucocraticWWWleucogabbroWlevee&Wlevel9W:WvWxWWWWWWlevelsW?WlightWPWjWlWmWWlightcoloredleucocraticbiotitegranitecolorindex5commVlighttodark-grayandgreengraywackeconglomeratesiltstonjVlight-brownlWmWWlinesWWlithifiedWWlithofaciesWWlithologicWlithologicallyWlithologiesWWWWWWWlithologyWWlittlemWoWpWrWsWuWwWyWzWloadWWWWlocalWHWKWTW^WWWWWWWWWlocalizedW\cATosB*Orca Group -- Sedimentary rocks, undividedC(Tertiary, Paleocene and early Eocene (?)DDark-gray flysch of thin- to thick-bedded sandstone, pebbly sandstone, siltstone, mudstone, and locally conglomerate and limestone; sandstone is composed chiefly of quartz and plagioclase; conglomerate clasts are mainly felsic porphyry and graniteGSR004H13ISewardJ SedimentaryK950ATossBOrca Group: SiltstoneC(Tertiary, Paleocene and early Eocene (?)ADark-gray to black siltstone, mudstone, and minor fine-grained sandstone that is tightly folded and metamorphosed to slate; medium-gray and green lenses of micritic limestone as much as 2 m thick present locally in slate; olistostromes of siltstone present locally; same sedimentary rock types are included in sedimentary rock-greenstone map units containing basalt sills (Togs) and pillow basalt (Tops).GSR004H15ISewardJ SedimentaryK950ATosB*Orca Group -- Sedimentary rocks, undividedC"Tertiary, Eocene (?) and PaleoceneV[ADark-gray to black siltstone, mudstone, and minor fine-grained sandstone that is tightly folded and metamorphosed to slate; medium-gray and green lenses of micritic limestone as much as 2 m thick present locally in slate; olistostromes of siltstone present locally; same sedimentary rock types are included in sedimentary rock-greenstone map units containing basalt sills (Togs) and pillow basalt (Tops).GBS004H15I Blying SoundJ SedimentaryK950includesWWWWWWWWWW>W@WAW^WaWdWWWWWWWWW WWWWW0W@WBWDWNWxWyWzW}WWWWWincludesatleast1500mofinterbeddedmassivetothin-beddVincludesstratifiedandlocallyforeset-beddedsandandgrav@VAVaVdVincludesstreamandbeachdepositsglacialtillandoutwashVincludestwotypes1leucocraticporphyrydikeswith2030eVincludingWWWWW~WWWW7W@WBWCWinclusionsHWIWPWincompetentWincorporatedWincrease$W%WinferredWWWWWFWIWWinferredtoconsistoflodgementtillablationtillandstraFVIVinformally>WinletWWinnerWintenselyWWinter-pillowWinterbeddedWWWWWWWWWWWWWWWWWWWWWWWW?Rinterpretation@Mintrude@qisqUisland@@kenai@lamprophyre@large@left@Zlight-gray@limited@llocally@located@maficdikessillsandplugsstronglyalteredintrusionsofd@many@margins@~massiveclast-supportedwell-roundedpebblecobbleandbould@pmassivetothin-beddedcoal-bearingarkosicsandstonedark-g@material@;measured@medium-gray@metawacke@mixed@Amoraine@more@mostlyhornblende-biotitetonalitebutalsoincludesbiotite@tegraywackeandsiltston@Upossession@ present@progressive@ratios@regional@ relatively@Srockavalanchedeposits@bsand^sandgravelandcobblesofpresentandformerbeachesbeach@sandstoneconglomerateandsiltstone@separatable@;several@significant@slope middleton@ unconsolidated= OrcontainsWWWWWWWWW/WPWnWoWrWsWvWwWWcontentWWcontentsWWcontinuityRWUWcontinuousPWcontortedWcontrolWconvertedWWWconvolute7W;W=WcookWxWWcoolingW WcopperWWWW0W1W>WcoquinalWmWcordovaWW@WBWDWcoreWWcorrelatexWWsWcountryW'WPWcoveWcoverWcoverageW4WcoveredBWVW_WiWkWWWcreamPWcreatingWWcreekW@WAWaWdWWWWWWWjWrWsWcrescentWWWcresecentWcrestW WcropHWIWcrops#Wcross;W=Wcross-beddingWcross-cuttingW Wcross-lamination7WcrossbeddingWWWcrowe WcrudelyWcrust0Wcrystals!Wcurrent-ripple7WcurrentsWWWcutWcynthiajWdWd2WWWodelta@deposit@depositsoflandslidesincludingfallsslumpsslidesandfai@4described@edikesofdaciterhyoliteandesiteandrarebasaltstoredin@discontinuouslymantledbelowaboutthe500-ftstrandlinele@drift@elevatedbeachridgeswell-sortedwell-stratifiedwell-drain@episodes@estimated@xorcagroupsedimentaryrocksundividedVVVVVVorcagroupshaleorargillitelithofaciesgVorcagroupsheetedbasaltdikesVorcagroupsheeteddikesVorcagroupsiltstoneVVorcagrouptuffaceoussedimentaryrocksVVorcagrouptypicalturbiditesVorcagroupultramaficrocks&VorcagroupvolcanicrocksundividedVVVorthogneissWother$W)W*W,W2W3W4WW>W?WotherunconsolidateddepositsartificialfillVotherunconsolidateddepositsdeltadeposits4Votherunconsolidateddepositsnonvegetatedbeachdeposits*Votherunconsolidateddepositsnonvegetatedtidalmarshdepos3Va5TrockavalanchedepositsVrockglacierdepositsRVrock-greenstoneWWrocksWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W WWWWWWWWWW!W&W'W(W)W,W.W/W0W1W5W9W:W;W=W>W?W@WAWBWHWIWLWMWNWOWPWWWYWZWlWmWpWqWtWuWxWyW}WWWWWWW7WrythmiteWWsaintWWWsalt5W8Wsaltmarshwell-stratifiedsiltandsmallpebblespoorlydra5V8VsameWWWsamples;W=WsandWWWWWWWWWWWWWWWWWWWWWWW#W$W'W(W)W*W+W,W-W.W/W0W1W2W3W7W<W=W>W@WAWBWTWWW[gAA sequence of thin- to thick-bedded sandstone, siltstone, and mudstone. Abundant sedimentary structures, such as graded bedding, crossbedding, and ripple marks, along with flute, groove, and load casts, indicate deposition from turbidity currents. Sandstone is more abundant than finer-grained rocks. Limestone lenses or concretions are found locally, and these, along with the earlier mentioned conglomerates, are characteristic of sedimentary rocks belonging to the Orca Group. Thin-sectioBXn petrography indicates that most of the sandstones are feldspathic to feldspatholithic.FEPollen: Alnus (Alder) Foraminifers: Globogerina sp., G. senni, Globogerina sp. (hispid), Globorotalia sp. Echinoids: Holaster sp. ?Hypsopygaster sp., NucleopygusGBS002H271I Blying SoundJ SedimentaryK950ATosB*Orca Group -- Sedimentary rocks, undividedC"Tertiary, Eocene (?) and PaleocenerdaciteWWWWWdammedWdarkWWWWWWWWW W(WHWLWMWdarkgraycontortedfinegrainedshaleirregularblocksofrVdarkgraymassiveargilliteorthinbeddedshaleoutcropoccVdarkgrayorgreenpillowbasaltflowsandminormassivebasVdarkgraypoorly-beddedtomassivematrix-supportedpebblymVdarkgraytogreenmoderatetowellbeddedvolcanicmudstoneV-beddedsandstonepebblysaVVdark-graytoblacksiltstonemudstoneandminorfine-grainedVVdarkerWdatedWdatum9W:WdebrisWWW WWWWWWWWOWPWSWWWWWWWWWdebrisflowdepositsofcrescentrivervalleyincludesseverVdebrisflowdepositsofnorthforkcrescentriverdepositsoVVdebrisflowdepositsonthenorthflankofredoubtvolcanoiVdecadesWdeepWdefinitionWdeformedWWWWLX:nucleopygusWWWnumerousrWsWoccurvWwWoffWlWmWrWsWvWwWWolderrWsWoppelianWoWorWWWWWotherrWsWothers+WjWoverlieslWmWpapillicerastWuWvWwWparabigottesvWwWparareineckialWmWpartrWsWpartsvWwWparvulusWWWpelcypodstWuWvWwWpelecypodWWW;W=Wpelecypodinoceramuskusiroensisinoceramusulrichiandinoc;V=VpelecypodsW[WjWlWmWpWqWrWsWdiolariainunderlyingribbonchert2VpollenWWWpollenalnusalderforaminifersglobogerinaspgsennigloboVVVpoorlyWWpreservedWWprobablyWWproteacidites+Wprovides[WpseudocadocerasfWradiolaria2W3Wreticulatus+Wribbon2WsenniWWWWWWsiemiradzkialWmWsilicoflagellatesWWsiltstonelWmWsonniniajWgnATosB*Orca Group -- Sedimentary rocks, undividedCTertiary, Eocene and PaleoceneAVery thick, complexly deformed monotonous sequence of thin- to thick-bedded turbidites consisting of sandstone, siltstone, and mudstone; metamorphosed to zeolite or prehnite-pumpellyite facies. Abundant sedimentary features indicate deposition from sediment gravity flows on submarine-fan complex. Lenticular matrix-supported conglomerate, and pebbly mudstone and sandstone are widespread.E@planktonic foraminifers, fossil crabs, pelecypods and gastropodsGCV003H271ICordovaJ SedimentaryK950ATosB*Orca Group -- Sedimentary rocks, undividedC"Tertiary, Eocene (?) and Paleocenecf)AA sequence of thin- to thick-bedded sandstone, siltstone, and mudstone. Abundant sedimentary structures, such as graded bedding, crossbedding, and ripple marks, along with flute, groove, and load casts, indicate deposition from turbidity currents. Sandstone is more abundant than finer-grained rocks. Limestone lenses or concretions are found locally, and these, along with the earlier mentioned conglomerates, are characteristic of sedimentary rocks belonging to the Orca Group. Thin-sectioBXn petrography indicates that most of the sandstones are feldspathic to feldspatholithic.FEPollen: Alnus (Alder) Foraminifers: Globogerina sp., G. senni, Globogerina sp. (hispid), Globorotalia sp. Echinoids: Holaster sp. ?Hypsopygaster sp., NucleopygusGSR002H271ISewardJ SedimentaryK950iGsedimentaryWWWWWWWWWWWWWWWW+W9W:W;W=W@WBWYWZWWsedimentaryandvolcanicrocksVsedimentaryrocksYVZVhsalt5W8Wsand<WsandstoneWW]W^WpWqWtWuWschistLWMWNWQTschistvaldezgroupLVMVscourWWscouredWscouredbedrockVsedimentaryWWWWWWW xholoceneWWW₀む䂀傀W邀WWWWWW WWWWWWWWW!W"W#W'W(W)W*W,W-W/W0W1W2W3W4W6W;W<W=W>WLWOWSWWWXWYWZW\W]W^W`WeWgWhWWWWWWWWWWWWWWW petroleumWWphacoidallyJWKWphaseWphasesWWWWphenocrystsWWWWW WWWEWFWphotoWW WphotosW%WSWWphyllite7W;W<W=WAWWphyllitic8WpillowWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W.W3W@WAWBWCWDWLWMWpillowandmassivebasaltdepositionallyoverlainbyradiola3VteinquantityVVVpillowedWWWWWWWWpillowsWWWWWpink WpinnacleWWWplacesWWplafkerWWWplagioclaseWWWWWWWWWWWWWWWWW W W WW W!W"W/Wplagioclase-bearing&Wplagioclase-clinopyrWplagioclase-quartzWplagiograniteW$W%WfWWWWW=actionWactiveW@WAWSWaWdWactiveandrecentlyactiverockglacierschieflyrubbleandSVadjacentWWWW4WWWW6WcWadjoiningWadvanceqWtWageW<W?W\W]WgWhWvWxW|W}WWWWWWWWWWWWW1W>W?WWages0WagglomeratexWzW|W~WWWaggregateWWWaialikWairWW W%WSWWair-fallPWWair-photoWairfallWairphotosTWalaska-aleutiantWuWWalaskan<WUWVW[W_WgWhWalbiteWWWWWWW W!W"W.W/Waligned=W;W=WalkalicWalkalisWallWWW W;W=WrWsWtWuWallotriomorphicWWlexesnorthernpolygonsiValluvialfansandalluvialfancomplexessouthernmostpolygoValluvialfansandconesunsortedrocktalusinpartcolluviaVVnp]ATosbB.Orca Group - Massive sandstone (Lithofacies B)CEocene and PaleoceneAGray to tan, massive bedded, fine to medium grained sandstone. Beds range in thickness from 2 m to over 5 m. Locally contains interbedded interval of well bedded turbidites of lithofacies C (Mutti and Ricci Lucchi, 1978). Massive sandstone is predominant in a belt that extends from the Special Study Area to the southwestern part of the Chugach National Forest. Dish structures are locally commonGSR005H3086ISewardJ SedimentaryK950AToscB!Orca Group - "Typical" turbiditesCEocene and Paleocenefm*AA sequence of thin- to thick-bedded sandstone, siltstone, and mudstone. Abundant sedimentary structures, such as graded bedding, crossbedding, and ripple marks, along with flute, groove, and load casts, indicate deposition from turbidity currents. Sandstone is more abundant than finer-grained rocks. Limestone lenses or concretions are found locally, and these, along with the earlier mentioned conglomerates, are characteristic of sedimentary rocks belonging to the Orca Group. Thin-sectioBXn petrography indicates that most of the sandstones are feldspathic to feldspatholithic.FEPollen: Alnus (Alder), Foraminifers: Globogerina sp., G. senni, Globogerina sp. (hispid), Globorotalia sp., Echinoids: Holaster sp., ?Hypsopygaster sp., NucleopygusGCV002H71ICordovaJ SedimentaryK950puATosdB+Orca Group - Rythmite (sp.) (Lithofacies D)CEocene and PaleoceneDDark gray, well bedded, fine grained, siltstone, and shale in beds 5 cm or less in thickness. Probably represents a distal facies of Tosc. Occurs in local map scale outcrops on the southern side of Fairmount Island and the west side of Wells BayGSR005H3097ISewardJ SedimentaryK950ATosfB Orca GroupC7Eocene and Paleocene - Chaotic deposits (Lithofacies F)AtDark gray, contorted, fine grained shale. Irregular blocks of rythmite (sp.) and sandstone in a chaotically folded shale host. Probably represent deposition of large slump blocks along submarine canyon walls or the slope environment. The outcrops along the west side of Long Bay are the only known occurrence of this lithofacies in the Orca Group (Nelson and others, 1985)tGSR005H3088ISewardJ SedimentaryK950ATosgB/Orca Group - Shale or argillite (Lithofacies G)CEocene and PaleocenemoAGray, well bedded, fine to medium grained, alternating layers of sandstone, siltstone, and shale. Beds are in layers less than or equal to 2 m thick. This lithologic association led to the original definition of turbidites (Mutti and Ricci Lucchi, 1978). Commonly displays nearly complete Bouma sequences (Bouma, 1962). Primary sedimentary features are common and include well-developed graded bedding, cross-bedding, load and flute casts, dish structures, and fine-scale laminations. Probably Bdeposited in the middle part of a deep sea fan that had local inner fan deposits representing feeder and distributary channels with the fan complexGSR005H3093ISewardJ SedimentaryK950ooffWoffshoreWWWW-WolderWWWWWolderalluvialdepositsfoundinlargerstreamvalleysatleVoldestWoligoclase W WWolistostromesWWolive-graytWuWvWwWolivineWWWWWWWWWonWWWWWW&W/W>W@WAWNWOWPWQWaWdWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W WW#W$W%W(W@WBWHWIWPWfWjWlWmWxWWAewell-developedW$W%WPWwell-drained+W.Wwell-roundedWWWWW9W:Wwell-sortedWWWWWW+W-W.W7WBWcWfWwell-sortedstratifiedsiltandsomesandandlocalgraveldVwell-sortedstratifiedsiltandsomesanddepositedinshall7Vwell-stratified+W.W/W5W8WBWwellsWwereWWW WW$W%Wwest@WAWaWdWWWWWWWWWWWW$W%W;W=WNWOWwest-dippingW$W%WwesternW$W%Wwesternmost$W%WwestwardW WwhereWWWW#WlWmWwhereasCWwhichWW W"W0WxWwhidbeyWWwhiteWWWW W"WwhollyWWwideWwidelyFWIW9W:WwidespreadWwilliamWeslopes WWWWWWslopingHWKWslumpWslumpsWWWWWAslopes@sslumpsearth-debrisflowsblockglidesanddebrisavalanches@sole@Ksteep@strike@surfaces@terminal@.tertiary@'than@thecentralpartoftheplutonsaredominantlylight-grayme@Nthese@they@thick-bedded@thisunitconsistsofmassivegreenstonemetamorphosedpillo@!till@Tto@togs@7tops@tunnel@$undividedsurficialdeposits@units@uppergreenschisttoamphibolitefaciesschistderivedfrom@2variegated@vicinity@weathers@Owell@Awell-developed@rwind@1980@can@Gcrabs@foraminifera@>hispid@lissoceras@Lnucleopygus@esp@tight@Fkn006@kn007@ ‚A@|ÃQ`@Ã`@Ã@ÄRQ@: blyingsound@kenai6 middleton@sound@* unconsolidated= ovDrDark gray, massive argillite or thin bedded shale. Outcrop occurs in a north-trending band north of Eickelberg BayGSR005H3033ISewardJ SedimentaryK950ATosbdBFOrca Group - Massive sandstone and rythmite (sp.)(Lithofacies B and D)CEocene and PaleoceneDInterbedded intervals, undivided at map scale, of tan, massive channel sandstones and rythmite (sp.). Rythmite (sp.) interval probably represents overbank depositsGSR005H3085ISewardJ SedimentaryK950ATopsB0Orca Group: Pillow basalt and sedimentary rocksC(Tertiary, Paleocene and early Eocene (?)DAreas composed of about equal amounts of pillow basalt and interbedded sedimentary rocks of sandstone and subordinate siltstone. Present chiefly on Erlington, Evans, and Bainbridge Islands.AdForaminifers. probably Globigerina or Subbotina Probably Tertiary (specimens poorly preserved)d@Af    $  )  3  fGBS004H19uzI Blying SoundJIgneousK951ATogsB-Orca Group: Greenstone and sedimentary rocksC(Tertiary, Paleocene and early Eocene (?)DBasalt sills intrude metasedimentary rocks, chiefly slate, on Elrington, Evans, and Bainbridge Islands; basalt sills and dikes in slate and sandstone on Knight IslandGBS004H23I Blying SoundJ MetamorphicK951ATopsB0Orca Group: Pillow basalt and sedimentary rocksC(Tertiary, Paleocene and early Eocene (?)DAreas composed of about equal amounts of pillow basalt and interbedded sedimentary rocks of sandstone and subordinate siltstone. Present chiefly on Erlington, Evans, and Bainbridge Islands.AdForaminifers. probably Globigerina or Subbotina Probably Tertiary (specimens poorly preserved)d@Af    $  )  3  fGSR004H19ISewardJIgneousK951ATogsB-Orca Group: Greenstone and sedimentary rocksC(Tertiary, Paleocene and early Eocene (?)R @ @ @aorcagroupmassivesandstoneandrythmitesplithofaciesbaVorcagroupmassivesandstonelithofaciesbVorcagrouppillowbasaltVVVVVorcagrouppillowbasaltandsedimentaryrocksVVVVVorcagrouprythmitesplithofaciesdVareasWWareasindriftrivervalleysubjectedtofloodscourordepoVareasondriftriverdeltasubjectedtofloodscourordeposVargilliteWarkoseaWbWartificialWash-richWash-richcolluviumVavalancheWWbWWbars-WbasaltWWWWWWWWWWWWWWWWW3Wbay WWWv}DBasalt sills intrude metasedimentary rocks, chiefly slate, on Elrington, Evans, and Bainbridge Islands; basalt sills and dikes in slate and sandstone on Knight Island. Greenstone and sedimentary rocksGSR004H23ISewardJ MetamorphicK951ATosvB>Orca Group -- Interbedded sedimentary and mafic volcanic rocksC"Tertiary, Eocene (?) and PaleoceneALocally variable amounts of volcanic and sedimentary rocks. In some cases unit is marginal to thicker sequences composed of pillowed and massive basalt flows. The lithologies are quite variable throughout the study area. In Ragged mountains volcaniclastic and tuffaceous sedimentary rocks are abundant, and pillow basalt is rare. These rocks are typically metamorphosed to zeolite or prehnite-pumpellyite facies and on Knight Island they have been converted to a hard hornfels by the abundaB?nt sills(?). Interbedded sedimentary and mafic volcanic rocks-|RDzE}BCBAADBACGDFAJDAA‚A‚A‚A‚A‚ A‚ B‚ B‚A‚B‚F‚B‚K‚A‚F‚!B‚"I‚$A‚&A‚(H‚,A‚/A‚1D‚5C ‚7G ‚9J‚;A‚=A‚@A‚BB‚ED"‚HC$‚IA&%‚LA('‚NJ+‚PB0/‚UA43‚\D6‚aD9‚eD<‚hD@‚jEB‚lBDAEC‚mBIAJH‚oEM‚pBQPy‚A‚BEF‚Cf‚D‚F‚H "‚JG‚Q‚RLM‚S‚T.‚U/‚X[‚aj‚q‚xx‚‚т7‚+‚3‚2‚,‚‚‚‚‚‚Ã!䂀傀悀Ã!`Ã!pÃ!Ã!Ã"邂Ã" Ã"0Ã"@Ã"`-Ã"pÃ#6Ã#`=EÃ#RÃ$OÃ$`WÃ% Ã% Ã%0Ã%@Ã%`Ã(06Ã1Ã1`Ã2'Ã2`Ã3Ã4Ã4`Ã5Ã6ȂÃ6`Ã6pÃ8䂁傁Ã8 ΂ςÃ80邁ÃAÃA >?ÃA01ÃCÃDÃD ݂ႁÃD0܂ނÃD@ÃDPÃD`ÃQ`ÃQ ÃQ0<ÃQ@mÃQPopzWEForaminifers: Globigerina or Subbotina; Globigerina sp. (?) Globorotalia sp.; Globigerina cf. G. senni, Globorotalia sp., ?Eoconuloides parvulus, Globigerina sp. (high spired), Globigerina sp. (hispid)GBS002H332I Blying SoundJ SedimentaryK951MHFSATopsB1Orca Group -- Pillow basalt and sedimentary rocksC"Tertiary, Eocene (?) and PaleoceneAPillow basalt, massive basalt flows, minor volcanic breccia interbedded with sandstone, siltstone, and shale. Distinguished from the interbedded sedimentary and mafic volcanic rocks unit on the basis of the predominance of pillow basalt in the section. Probably gradational with the pillow basalt unit. Two measured sections on Ellamar Mountain show significant differences in the percent of interbedded volcanic and sedimentary rocks that reflect rapid lensing out of units probably due to pmarginsHWKWZW W W(WHWIWmarine0W1W;WWWWWWWWWWmarinesiltstonesandstoneandconglomeratethesandstonemeVmarineterracedeposits;VmarkedRWUWmarkings7WmarksWWWmarsh2W3W5W8WmartinWWmass-wastingWmasses WmassiveWWWWWWWWWWWWWWWWWWWWWWWWWWW W"W(W/W2W3W7WCWDWHW]W^W_W`WaWbWcWdWeWfWhWiWlWmWnWoWpWqWrWsWtWuWvWwWWWsupportedwell-roundedpebblecobbleandbouldVmassivecobble-boulderconglomeratemainlyrestrictedtoarecVmassivelight-grayarkoseandarkosicconglomerateminorintaVbVmassivetothick-beddedgraywackesandstoneandpebbleconglpVqVmassivetothin-beddedbrownish-grayarenaceoussiltstonewehViVMinterbeddedintervalsundividedatmapscaleoftanmassiveVinterbeddedpoorlyconsolidatedsandstonesiltstoneclaystonVinterbeddedweaklylithifiedsandstonesiltstonemudstonecaVVinterbeddingWAWinterbedsWWWWaWbWfWrWsWtWuWvWwWintercalatedWWWWWintergrownWWinterlayeredWWRWUWinternal;W<W=WinterpillowWWWMlocated>WlocationWWWlodgementFWIWloess`WmWoWpWrWsWuWwWyWzWlongWW W!WPWlongitudinal=WloopjWlooprecessionallateralandmedialmoraineandotherdeposijVlossRWUWlowWWW WDWWlow-gradient#WlowerWWWWW W<WWlowersandstonememberabouttwo-thirdsthick-beddedsandstoVlowestWWWlowland0W1WCWDWlucchiWWlustrousGWm@WAWaWdWWWWWWWWWWlWmWmaficWWWWWWWWWWWWWWWWWWWWW W W W WWWWWWW$W%W'WDWmaficandultramaficplutonicrockscompositionallyandtext'VdandVmajorWWWCWDWmanltedWWWWmantleTWWmantled`WmWoWpWrWsWuWvWwWxWyWzWW>LhispidWWWWWWholasterWWWhypsopygasterWWWirWsWidentifiedrWsWimmediatelylWmWin+W2W3WlWmWvWwWincludejWrWsWvWwWincludesnWoWpWqWvWwWincludingfWiniskinitesfWinoceramus7W9W:W;W=WpWqWrWsWtWuWvWwWinoceramya;W=WintolWmWislWmWrWsWvWwWitsvWwWjurassiclWmWkeppleritesfWlWmWkeyjWkheraicerasfWlWmWknownfWvWwWkusiroensis9W:W;W=Wlate9W:WlWmWWleptoshinctesnWoWlilloettiafWliroxyitesnWoWnoceramuskusiroensismaestrichtianlatecretaceou9V:VmollusksWWWWWWWmollusksandforaminiferaVVVmollusksforaminifersVmtchedlishvili+WnavoculopgisWWnot+Wnotinbradleybutcitedinmagoonandothers1980sporomorp+VATosvB>Orca Group -- Interbedded sedimentary and mafic volcanic rocksC"Tertiary, Eocene (?) and PaleoceneALocally variable amounts of volcanic and sedimentary rocks. In some cases unit is marginal to thicker sequences composed of pillowed and massive basalt flows. The lithologies are quite variable throughout the study area. In Ragged mountains volcaniclastic and tuffaceous sedimentary rocks are abundant, and pillow basalt is rare. These rocks are typically metamorphosed to zeolite or prehnite-pumpellyite facies and on Knight Island they have been converted to a hard hornfels by the abundaB?nt sills(?). Interbedded sedimentary and mafic volcanic rocks-EForaminifers: Globigerina or Subbotina; Globigerina sp. (?) Globorotalia sp.; Globigerina cf. G. senni, Globorotalia sp., ?Eoconuloides parvulus, Globigerina sp. (high spired), Globigerina sp. (hispid)GSR002H332ISewardJ SedimentaryK951MHFSATovsB8Orca Group -- Interbedded sedimentary and volcanic rocks}+Bthe presence of an irregular paleosurface. One section contains 92 percent volcanic rocks and 8 percent sedimentary rocks, and the other section about 1,200 ft laterally distant contains 75 percent volcanic rocks and 25 percent sedimentary rocks.GSR002H331ISewardJIgneousK951andesiteWWandesiticWWWWWWWandesitictobasalticlavasandassociatedpyroclasticrocksVanglesW WS800WW92WWWaW>WPWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W WWWWWW#W$W%W&W/W0W7W9W:W;W<W=WJWKWPWfWjWnWoWpWqWrWsWvWwWasequenceofthintothick-beddedsandstonesiltstoneandmVVVatransgressivemarinesequenceconsistspredominantlyofcoVabandonedWWW Wabandonedchanneldepositsinoutwashabovemodernfloodplai VabandonedorunderfitstreamchannelinferredtoberelictgVablationFWIW;severalBWWWW#W$W%W7WsewardWWshadesWshaleWWWWWWWWWWWWWWWWW@WBW[WjWlWmWnWoWrWsWvWwWshalesWWshallowW7WWshalyWshapedGWshardsEWFWshared(WHWIWsharpWshearW&WshearedWWWshearingWWsheetedWWWWWWW W W#W$W%W&Wsheeted-dikeWshinyLWMWshore$W%Wshoreline-WiWkW$W%WshowWWWWW#W,WshowingtWuWshownW&WsideWWWWWWxWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWsiltyWWWsimilarWWWsizeWslateWWWWslidesWWWslopeWWCTertiary, Eocene and PaleoceneA Variable proportions of interbedded, tholeiitic basalt and turbidites. Basalt--pillowed and massive flows, pillow breccia, and tuff. Turbitdites--mudstone, siltstone, and fossiliferous volcanogenic sandstone. Metamorphosed to zeolite or prehnite-pumpellyite facies. GCV003H335ICordovaJ SedimentaryK951ATosvB>Orca Group -- Interbedded sedimentary and mafic volcanic rocksC"Tertiary, Eocene (?) and PaleoceneALocally variable amounts of volcanic and sedimentary rocks. In some cases unit is marginal to thicker sequences composed of pillowed and massive basalt flows. The lithologies are quite variable throughout the study area. In Ragged mountains volcaniclastic and tuffaceous sedimentary rocks are abundant, and pillow basalt is rare. These rocks are typically metamorphosed to zeolite or prehnite-pumpellyite facies and on Knight Island they have been converted to a hard hornfels by the abunda2variegatedWWvariesWW WWWvarieties WvariousvWxWWWWvarying W"Wvegetated)W,W2WbWWWvegetatedbeachdepositsconsistingmainlyofmixedsandand)V,Vvegetatedtidalmarshdepositsconsistoforganicmaterialm2Vveinlets.WveinsW/WverticalWW W WveryWWWWvWwWverythickcomplexlydeformedmonotonoussequenceofthintoVvesiclesWvesticlesWWWWWWWATopsB1Orca Group -- Pillow basalt and sedimentary rocksC"Tertiary, Eocene (?) and PaleoceneAPillow basalt, massive basalt flows, minor volcanic breccia interbedded with sandstone, siltstone, and shale. Distinguished from the interbedded sedimentary and mafic volcanics rocks unit on the basis of the predominance of pillow basalt in the section. Probably gradational with the pillow basalt unit. Two measured sections on Ellamar Mountain show significant differences in the percent of interbedded volcanic and sedimentary rocks that reflect rapid lensing out of units probably due toB the presence of an irregular paleosurface. One section contains 92 percent volcanic rocks and 8 percent sedimentary rocks, and the other section about 1,200 ft laterally distant contains 75 percent volcanic rocks and 25 percent sedimentary rocks.GCV002H331ICordovaJIgneousK951ATopsB0Orca Group: Pillow basalt and sedimentary rocksC"Tertiary, Eocene (?) and PaleoceneIB?nt sills(?). Interbedded sedimentary and mafic volcanic rocks-EForaminifers: Globigerina or Subbotina; Globigerina sp. (?) Globorotalia sp.; Globigerina cf. G. senni, Globorotalia sp., ?Eoconuloides parvulus, Globigerina sp. (high spired), Globigerina sp. (hispid)GCV002H332ICordovaJ SedimentaryK951MHFSp;massivetothin-beddedcoal-bearingarkosicsandstonedark-gVmassivetothin-beddeddark-graytoblacksiltstonelaminate_V`Vmassivetothin-beddedgrayarenaceoussiltstoneweathersgrdVeVWWW#W$W0W1W2W3W4W6WWWWWWWmatrixWWWWWWJWKWmatrix-supportedWWWWWWmaximumWmayWWWWWWWW$WPWWWWWWWWWWWWWDWmchugh0W4WmeasuredWWWWmedialjWmediumWWWWWW W WWWWWWWWWW W!W"W$W%W'W/WPWmediumandcoarse-grainedbiotitegranodioriteVmediumandcoarse-grainedbiotitegranodioriteoftheaialikVmediumtodark-grayfoliatedamdiumtocoarse-grainedbiotitVmediumtodark-grayfoliatedmediumtocoarse-grainedbiotitVmedium-grained WWW/ATosvB2Ophiolite of Glacier Island - Volcaniclastic rocksAlDark gray to green, moderate to well bedded volcanic mudstone and sandstone, poorly sorted, broken pillow breccia with angular clasts of pillow basalt, ranging in size from a few centimeters to 15-cm across, in a volcanic mudstone matrix, and rare pillow basalt flows up to 2-m thick. Forms the upper part of the ophiolite and is depositional on pillow basalt unitlGSR005H3120ISewardJ SedimentaryK951ATocBOrca Group: ConglomerateC"Tertiary, Eocene (?) and PaleoceneAPillow basalt, massive basalt flows, minor volcanic breccia interbedded with sandstone, siltstone, and shale. Distinguished from the interbedded sedimentary and mafic volcanics rocks unit on the basis of the predominance of pillow basalt in the section. Probably gradational with the pillow basalt unit. Two measured sections on Ellamar Mountain show significant differences in the percent of interbedded volcanic and sedimentary rocks that reflect rapid lensing out of units probably due toB the presence of an irregular paleosurface. One section contains 92 percent volcanic rocks and 8 percent sedimentary rocks, and the other section about 1,200 ft laterally distant contains 75 percent volcanic rocks and 25 percent sedimentary rocks.GCV002H331ICordovaJIgneousK951)}sandstoneconglomerateandsiltstoneVsandstoneconglomeratesiltstoneandinterbeddedcoal+VsandstonesiltstoneandcoalVsandstonesiltstoneandlimyconcretionskVsandstonesiltstoneandsomecoalVVsandstonesiltstonecoalandconglomerateVsandstonesWWWW;W=WlWmWsandy%WtWuWscaleWW#WPWRWUWscatteredWschistWDWGWNWOWQWRWTWUWWWschisthornfelsandamphibolitecontactmetamorphosedtalkeeVschistoseLWMWOWschistoseinterbeddedsiltstonegraywackeandlessabundantLVMVWWWWWWWWWWWW.W7W9W:W;W<W=W@WBWHWIWsedimentsCWDWvWxWWWW0Wsee0WseemWseen#W0Wsemi-anthraciteWsemi-consolidatedWsemiconsolidatedWWsemiconsolidatedcoal-bearingsiltsandandgravelVVsemischistose;W=WCW(volcanoWwasting W WWWWWWwestWWWwestforelandformationVVVyakatagaWWyakatagaformationVVyoungerYWWWWyoungerdriftriverdeltamudflowdepositspriorto1957VyoungerglacialdepositsundividedYVaddedW WageRWSWUWVWWWagenotgivenRVSVUVVVWValbian3WandWWWWWW/W;WLWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W!W#W&W'W)W-W.W/W8WlWmWyWWWbajocianjWcallovianfWjWcenozoicWcenozoicandmesozoicVVVVVeoceneandpaleocenechaoticdepositslithofaciesfVfW:xophioliteofglacierislandvolcaniclasticrocksVorWGWJWWWWorcaWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW!W#W&WorcagroupVorcagroupconglomerateVVVVorcagroupconglomeratelithofaciesaVorcagroupgabbro#Vorcagroupgabbroanddiorite!VorcagroupgreenstoneandsedimentaryrocksVVorcagroupgreenstoneundividedVVorcagroupinterbeddedsedimentaryandmaficvolcanicrocksVVVorcagroupinterbeddedsedimentaryandvolcanicrocksV candWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W W W WWWWWWWWWWWWWWWWWW W!W"W#W$W%W&W'W(W+W,W-W.W/W0W1W2W3W4W7W8W9W:W;W<W=W>W?W@WAWBWCWDWEWFWGWHWIWJWKWLWMWNWOWPWQWRWTWUWXW[W\W]W^WaWbWcWdWeWfWgWjWkWlWmWnWoWpWqWrWsWtWuWvWwWxWyWzW{W|W~WWWWWWWWWWWWWWWWand/orWandalusitePWandesine W WWandesine-bearingWddarkgraywellbeddedfinegrainedsiltstoneandshaleinbeVdark-brownWWdark-brownishlWmWdark-grayWWWWWWWWWWWWWWWWW!W9W:WEWFW_W`WfWjWlWmWnWoWpWqWrWsWvWwWWdark-graycarbonaceouslimestoneandsiltylimestonealsoinVdark-grayfinetomedium-grainedlocallyporphyriticgabbroVgrayandbrownaphyrictoporphyriticandlocallyVVdarkerWdatedWdatum9W:WdebrisWWW WWWWWWWWOWPWSWWWWWWWWWdebrisflowdepositsofcrescentrivervalleyincludesseverVdebrisflowdepositsofnorthforkcrescentriverdepositsoVVdebrisflowdepositsonthenorthflankofredoubtvolcanoiVdecadesWdeepWdeep-seaWdefinitionWdeformedWWWWATocBOrca Group: ConglomerateC"Tertiary, Eocene (?) and PaleoceneAORCA GROUP: Ranges from matrix-supported pebbly mudstone and sandstone to massive clast-supported pebble, cobble, and boulder conglomerate. The generally well-rounded clasts consist of various lithologies that have locally predominant types as follows: greenstone, sandstone, argillite, and limestone; felsic porphyry and tuff, granite, and sandstone; felsic tuff and porphyry; white quartz, felsic porphyry, and argillite; sandstone and siltstone. The conglomerates usually occur as lensesB 300-700 ft thick within flyschoid rocks. The matrix-supported conglomerates and pebbly mudstones may have been formed by sub-marine landslides on unstable slopes.E;Crab: Branchioplax washingtoniana Pelecypod: Acila decisaGSR002H270ISewardJ SedimentaryK952ATocBOrca Group: ConglomerateCTertiary, Eocene and PaleoceneAORCA GROUP: Ranges from matrix-supported pebbly mudstone and sandstone to massive clast-supported pebble, cobble, and boulder conglomerate. The generally well-rounded clasts consist of various lithologies that have locally predominant types as follows: greenstone, sandstone, argillite, and limestone; felsic porphyry and tuff, granite, and sandstone; felsic tuff and porphyry; white quartz, felsic porphyry, and argillite; sandstone and siltstone. The conglomerates usually occur as lensesB 300-700 ft thick within flyschoid rocks. The matrix-supported conglomerates and pebbly mudstones may have been formed by sub-marine landslides on unstable slopes.E;Crab: Branchioplax washingtoniana Pelecypod: Acila decisaGBS002H270I Blying SoundJ SedimentaryK952=*multipleWmultiply7Wmultiply-deformed<Wmuscovite WWW.Wmuscovite-biotite-quOWmuscovite-biotite-qusillimaniteandgarnetschistbandedgnOVmuskegWW$WmuttiWWnamed>WxWWnaptowne?WiWkW|W}WWWWnationalWnatural&Wnaturalleveedepositsondeltaicorfandeltadeposits&VnearWWW<WWWWWWW&W'W(W@WBWDWHWIW_W`WnearlyWWWWWCWnelsonWneoglacial^Wneoglacialdepositsofendlateralandgroundmoraineskames^VnewhalenqWnextWnichawakWWnoWWnon-sortedWWnonfoliatedWWWWnonglacialWWWWWnonmarineWWWWG>crabsWWcrabsandmollusksVcranocephaliteslWmWcranwellia+WcreeklWmWcretaceou9W:Wcretaceous3Wcretaceoustotriassicradiolariainbeddedchert3VdecisaWWWdelicatus+WdettermanitesnWoWdiatomsWWdiatomsarachinodiscuscfaehrenbergiitrinacriaeftpilecVVdictyochaWWdifferentrWsWdistinctvWwWdistinctlyrWsWdividedlWmWechinoidsWWWefWWehrenbergiiWWeichwaldrWsWemileiajWtWuWemilieavWwWeoconuloidesWWWerycitesjWvWwWespecially[WfWfaunanWoWpWqWfaunallWmWvWwWfeetvWwWfewrWsWfirstrWsWforfWWWWWWWgastropodsWgeometricaWWglobigerinaWWWWWglobogerinaWWWgloborotaliaWWWWWWgowericerasfWhastataWWhighWWW`consistingWWWWWWW)W*W,WWWW;W=W@WBWJWKWPWvWwWconsistsWWWWWWWPWWWWWWWWWWWWWW'W(WDWHWpWqWyWconsistsofdiversemarineandglaciomarineclasticrocksinVVconsistsofmaficrocksbelongingtooneofthemainintrusiVconsistsoftephra-richcolluviuminthevicinityofandwesVDlMassive, clast-supported, well-rounded pebble, cobble, and boulder conglomerate. Variable clast composition.GCV003H270ICordovaJ SedimentaryK952ATocBOrca Group: ConglomerateC"Tertiary, Eocene (?) and PaleoceneARanges from matrix-supported pebbly mudstone and sandstone to massive clast-supported pebble, cobble, and boulder conglomerate. The generally well-rounded clasts consist of various lithologies that have locally predominant types as follows: greenstone, sandstone, argillite, and limestone; felsic porphyry and tuff, granite, and sandstone; felsic tuff and porphyry; white quartz, felsic porphyry, and argillite; sandstone and siltstone. The conglomerates usually occur as lenses 300-700 ft tBhick within flyschoid rocks. The matrix-supported conglomerates and pebbly mudstones may have been formed by sub-marine landslides on unstable slopes.E;Crab: Branchioplax washingtoniana Pelecypod: Acila decisaGCV002H70ICordovaJ SedimentaryK952ATosa3creekWWWWWWWnWoWrWsWWWcretaceous6Wcretaceousintrusiverocksunit12quartzdiorite6VcynthiapWqWdWWdaciteWWWdaciteofcapesainteliasVVVdebrisWWWWB)Orca Group - Conglomerate (Lithofacies A)CEocene and PaleoceneADark gray, poorly-bedded to massive, matrix-supported pebbly mudstone and sandstone to pebble, cobble, and boulder conglomerate. Minor lenses of sandstone and less or amounts of siltstone. Clasts are usually well-rounded and predominately sandstone and siltstone. Only one felsic igneous rock clast was observed. The thickest occurrence of conglomerate is found on the east side of Unakwik Inlet just of Miners Bay. Here the conglomerate unit nearly 1,000-m-thick and the outcrops are part of aB large northeast-trending fold. Depositional environment probably in submarine landslides on unstable slopes and large channel deposits on the slope and upper parts of deep-sea fans (Winkler and Tysdal, 1977)GSR005H3096ISewardJ SedimentaryK952ATotsB*Orca Group -- Tuffaceous sedimentary rocksC"Tertiary, Eocene (?) and Paleocene chaoticWcretaceousWWWWWW W W"W$W%W(W)W*W+W,W-W.W/W0W2W3W4W5W67W8W9W:W;W<W=W>?@WAWBWCWDWEWFWGWHWIWJWKWLWMWNWOWPWQTyWcretaceousandjurassic8Vcretaceousandorjurassic-VyVcretaceousandorlatejurassic.Vcretaceoustopermian,VdepositsWearlyWWWWWWWWWWWWWW!W0W2W3W4WxWzW|W~WWWWWWWWWearlycretaceous0V4Vearlycretaceousalbiantomiddletriassicladinian3VWWWWWWWWWWWWWWWWWW W WWWWWWWWWW!W#W&W'WeoceneandpaleoceneVVVVVVeoceneandpaleocenechaoticdepositslithofaciesfVfW?s slopeWATotsB*Orca Group -- Tuffaceous sedimentary rocksC"Tertiary, Eocene (?) and PaleoceneATuffaceous sedimentary rocks, volcaniclastic sandstone, and minor chert. Locally, these rocks contain abundant radiolarians and diatoms of probable Tertiary age (table 2). South of the Martin fault, this unit also includes minor pillow basalt and abundant volcanic breccia. The rocks are altered to a bright orange-weathering gossan and are intruded by numerous porphyritic dikes for a distance of 10 mi along the south side of the Martin fault.EDiatoms: Arachinodiscus cf., A. ehrenbergii, Trinacria ef., T. pileclus Silicoflagellates: ?Corbisema geometrica, ?Corbisema hastata, ?Corbisema triacontha, Dictyocha aspera, Navoculopgis constrictaGCV002H272ICordovaJ SedimentaryK953ATfB Lava flowsCTertiary, middle to late?D=Andesitic to basaltic lavas and associated pyroclastic rocks.GKN005H512IKenaiJIgneousK1000N2750ATdB$Intermediate, felsic and mafic dikesATuffaceous sedimentary rocks, volcaniclastic sandstone, and minor chert. Locally, these rocks contain abundant radiolarians and diatoms of probable Tertiary age (table 2). South of the Martin fault, this unit also includes minor pillow basalt and abundant volcanic breccia. The rocks are altered to a bright orange-weathering gossan and are intruded by numerous porphyritic dikes for a distance of 10 mi along the south side of the Martin fault.EDiatoms: Arachinodiscus cf., A. ehrenbergii, Trinacria ef., T. pileclus Silicoflagellates: ?Corbisema geometrica, ?Corbisema hastata, ?Corbisema triacontha, Dictyocha aspera, Navoculopgis constrictaGMI002H272IMiddleton IslandJ SedimentaryK953zi.rythmiteWWsaintWWW>ngradation0W1WWgradationalWWWWWWWgradeW W WWDWW}WWWWWWWWWgradedtomorainesofalaskanageandtoexistingglacierfrgVhVgradedtomorainesofnaptowneage|V}VgradesWWWWWgrained=WWWWWWWWgraniteWWWWWgravelWWWWWWWWWWWWWWWWWWWWW'W(W)W*W+W,W-W.W/W0W1W2W3W@WAWWW^WaWcWdWfWWWWgravelsiltandsandcommonlyoccuratmouthofsmallsidecVgravelsWWgravityWgrayWWWWWWWWWWWWWWWWWWWWWWWW WgraytotanmassivebeddedfinetomediumgrainedsandstoneVgraywellbeddedfinetomediumgrainedalternatinglayersoVgraywackeW.significantWPWWWWsilicaWsiliceousWWWWsiliciousWWWsillimaniteOWWWWWWWWWWWWW WCWsiltWWWWWWWWWWWWWWWW#W$W%W0W1W5W6W7W8W9W:W=WBWTWcWfWWWWsiltsandysiltandbogdepositsinterpretedfromairphotos%Vsiltite0WsiltstoneWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW+W-W.W/W0W9W:W@WBWLWMWsiltyWWWsimilarWWWWW WLWMWsizeWslateWWWW#W7W;W<W=WJWKWslices2WslidesWWWslightlyW W'WslopeWWXFspWWWWWWpWqWsparsepWqWspeciesfWrWsWspecificallyrWsWspecimensWWspinata+WspiredWWWsporomorphs+Wspp+Wsrivastava+Wstanley+WstemmatocerasjWvWwWstenocadocerasfWstephancerastWuWstephanocerasjWpWqWvWwWstriata+WstrigocerasvWwWsubbotinaWWWWWtWWtelocerasrWsWtertiaryWWthanrWsWthelWmWpWqWrWsWvWwWtheredglacierformationismostabundantlyfossiliferousivVwVthesparsefaunaincludestheammoniteschondrocerasandstepVqVthisrWsWvWwWthisunitisabundantlyfossiliferousandisthefirstunitrVsVthroughouttWuWcv005낁!XQRScv006삁"LYTUVWkn002ł *X\gkkn003ႁER-8Kkn005 +5NUVci낂]_acdhEtertiarymiddletolateVtertiarymioceneVVVtertiarymioceneandoligoceneVVVtertiarymioceneoligoceneandeoceneVVVVVVtertiarymiocenetoeoceneVtertiaryoligoceneVVV VVVtertiaryoligoceneandeoceneVtertiaryoligoceneandmioceneVtertiaryoligoceneeoceneorpaleoceneVtertiaryorlatecretaceous*VtertiarypaleoceneandearlyeoceneVVVVVVVVVVVVV!VtertiaryplioceneandmioceneVVVtertiaryplioceneormioceneVVtertiarypliocenetooligoceneVCearly TertiaryDnDikes of dacite, rhyolite, andesite, and rare basalt; stored in coverage as arcs, arc-code = 50, arc-para1 = 0F/Ar-AR isochron(?) age on andesite(?) of 57.0 MaGSV002H0ISeldoviaJIgneousK1011ATdBDacite of Cape Saint EliasCTertiary, MioceneADescribed by Winkler and Plafker (1981, p. 18) as follows: "A prominent, very pale gray dacite plug complex forms the landmarks of Cape Saint Elias and Pinnacle Rock at the seward end of Kayak Island (Plafker, 1974). The dacite is very dense and hard, and is conspicuously jointed. It has a microgranitic and porphyritic texture, and consists of about 35 percent plagioclase, 35 percent quartz, 25 percent orthoclase, and 5 percent relict brown hornblende and biotite. The dacite has sharp,B nearly vertical contacts with adjacent dark-gray argillaceous rocks of the Yakataga and upper Poul Creek Formations...". A zone of hornfels at least 300 ft wide borders the body.F)K-Ar date on dacite of 6.2 + or - 0.3 Ma. ratiosWreadilyWrecentlySWrecessionaljWrecodedWWrecord9W:WredjWpWqWtWuWred-brownhWiWvWwWreddishWWGWreddish-grayvWwWreddish-weatheringWWWWredoubtWW@WAWPWaWdWWWWWWWWWWWWreflectWWWWreflectsIWregion]W^WlGMI002H405IMiddleton IslandJIgneousK1053ATdBDacite of Cape Saint EliasCTertiary, Pliocene or MioceneDProminent very pale gray dacite plug complex that forms Cape Saint Elias and Pinnacle Rock at southwestern end of Kayak Island. Dacite is very dense and hard and is conspicuously jointed. Microgranitic and porphyritic texture.FWhole-rock K-Ar age of 6.2 MaGCV003H200ICordovaJIgneousK1053ATdBDacite of Cape Saint EliasCTertiary, Pliocene or MioceneDProminent very pale gray dacite plug complex that forms Cape Saint Elias and Pinnacle Rock at southwestern end of Kayak Island. Dacite is very dense and hard and is conspicuously jointed. Microgranitic and porphyritic texture.FWhole-rock K-Ar age of 6.2 MaGMI003H200ICordovaJIgneousK1053ATpvB1Poul Creek Formation -- Volcanic rocks, undividedC(Tertiary, Miocene, Oligocene, and Eocene1}fossiliferousWnWoWfoundWWWWWWHWIWPWfractured1W>W?WfragmentalWWfragments/W9W:WlWmWpWqWfreeWfrequentlyWWfringesWWWfromWWWWWWW%W@WAWPWSWTWaWdWWWWWWWWWWWWWWWWWWWWWWWWW W W W WWWWWW$W%W&W0W6W9W:W;W<W=WQWTWjWlWmWrWsWtWuWfrontUWVW[W_WfrontsgWhWfrostWftWWWWWWWWWWWW W&WgabbroWW WWW W"W#W$W%W'W,W.WHWIWWgabbroicWWW!WCWgaikemarWsWgallonsWWgarnetWWOWWgarnet-micaWWWWWWWWWWW WWWW7W<WtWuWVotherW#WPWjWWWWW WW#W$W%W>W?W{WothersW WWyWoutWWW#W.WHWIWoutcropWWWW W(WHWoutcrop-scale,WoutcropsWWW$W%W&WCWouterWWWoutpostWWoutward WoutwashWWWWWWWWWW W@WAW\W]W^WaWbWcWdWeWfW{W~WWWWWoutwashandvalleytraindepositsgradedtomorainesofekluVVoutwashandvalleytraindepositsgradedtomorainesofknikVVoutwashbrookslakeglaciationundivided{VDBasaltic pyroclastic and flow rocks including minor pillowed flows; locally interbedded with marine sedimentary rocks, including tuffaceous or glauconitic strata, probably genetically related to mafic dikes, sills, and plugs of the mafic plugs unit (Tm)F-K/Ar date on whole rock of 31.2 + or - 1.3 MaGMI002H320IMiddleton IslandJIgneousK1080ATpvB/Poul Creek Formation: Volcanic rocks, undividedCTertiary, Miocene to EoceneDBasaltic pyroclastic and flow rocks; locally interbedded with marine sedimentary rocks. Probably related genetically to mafic dikes, sills and plugs unit (Tm).GCV003H320ICordovaJIgneousK1080ATpvB0Poul Creek Formation: Volcanic rocks, undividedC(Tertiary, Miocene, Oligocene, and EoceneDBasaltic pyroclastic and flow rocks including minor pillowed flows; locally interbedded with marine sedimentary rocks, including tuffaceous or glauconitic strata, probably genetically related to mafic dikes, sills, and plugs of the mafic plugs unit (Tm).zpriorWWproglacial@WAWCWDWaWdWproglaciallakebottomsedimentsofnaptowneageCVDVprotalus Wquartz*W6WWWWWWquartzdioriteVquartzdioritedioriteandgranodioriteVquartzdiroitedikesVcanicrocksVVramparts WrecentWW!W"Wrecentglacio-fluvialdepositsVVrecentlacustrinedeposits!V"VredvWwWredoubtWWWWredwoodWWredwoodformationVVregionWWridges+W.WriverWWWWWWrockWSWrockavalanchedepositsVrockglaciersSVrocksWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WW&W'W(W)W+W1W5W6W9W:W;W<W=W>W?W@WAWBWCWGWHWIWXWYWZWyW}WWWWF-K/Ar date on whole rock of 31.2 + or - 1.3 MaGCV002H20ICordovaJIgneousK1080ATmBMafic dikes, sills, and plugsCTertiary, OligoceneDMafic dikes, sills, and plugs. Strongly altered intrusions of diabase, alkalic basalt, olivine basalt, and lamprophyre. Probably related genetically to extrusive volcanic rocks (Tpv) in Poul Creek Fm.GCV003H423ICordovaJIgneousK1090ATmB Mafic plugsCTertiary, Oligocene (?)AOnly includes mafic plugs in the eastern Cordova quadrangle west of Nichawak Mountain; mainly in the Blying Sound quadrangle. Miller (1975) and Winkler and Plafker (1981) described the mafic plugs as coarse grained and diabasic with 45 percent euhedral plagioclase intergrown with 30 percent anhedral augite and enstatite. The remainder of the rock is composed of 5 percent opaque minerals and 20 percent secondary chlorite. GCV002H42ICordovaJIgneousK1090ATmB Mafic plugsCTertiary, Oligocene (?)T7toWWWWWW W WWW@WAWBWFWIWPWTWZW^W`WaWbWcWdWfWgWhWmWoWpWrWsWuWwWyWzW|W}WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W W W WWWWWWWWWWW W!W"W#W$W%W'W(W0W7W9W:W;W<W=W@WBWDWEWFWGWHWLWMWNWOWPWQWRWTWUW]W^W_W`WcWdWeWfWhWiWjWlWmWnWoWpWqWrWsWtWuWvWwWyWWWWWWWWWopRWUWtopographicallyW WVmaficdikessillsandplugsVmaficplugsVVmarine;Wmarineterracedeposits;Vmarsh2W3W5W8WWmass W WWWWWWmassiveWWmchugh,W-W.W/W0W2W3Wmchughcomplex-V.V/V0Vmchughcomplexbasaltandchert3Vmchughcomplexgraywackeandconglomerate2Vmchughcomplexundivided,VmelangeJWKWmelangeoficewormpeakJVKVmember]W^W_W`WaWbWcWdWeWhWiWWWWmetamorphicWWWmetamorphicrocksVmetamorphicrocksundividedVmetasedimentary<WAWyWmetasedimentaryrocksundividedyVmetavolcanicAWCWATogB"Orca Group: Greenstone, undividedC(Tertiary, Paleocene and early Eocene (?)AmProbably pillow basalt, basaltic tuff, and sills. Few small areas of mafic igneous rock were also included in this map unit because classification of rocks is uncertain; they include an outcrop on Outpost Island not visited by authors, rocks with uncertain contact relation near Whidbey, Johnstone, and Jackpot Bays, and sheared greenstone along Johnstone Bay faultmGBS004H27I Blying SoundJ MetamorphicK1135ATogB"Orca Group: Greenstone, undividedC(Tertiary, Paleocene and early Eocene (?)AmProbably pillow basalt, basaltic tuff, and sills. Few small areas of mafic igneous rock were also included in this map unit because classification of rocks is uncertain; they include an outcrop on Outpost Island not visited by authors, rocks with uncertain contact relation near Whidbey, Johnstone, and Jackpot Bays, and sheared greenstone along Johnstone Bay faultmGSR004H27ISewardAOnly includes mafic plugs in the eastern Cordova quadrangle west of Nichawak Mountain mainly in the Blying Sound quadrangle. Miller (1975) and Winkler and Plafker (1981) described the mafic plugs as coarse grained and diabasic with 45 percent euhedral plagioclase intergrown with 30 percent anhedral augite and enstatite. The remainder of the rock is composed of 5 percent opaque minerals and 20 percent secondary chlorite. GCV002H423ICordovaJIgneousK10906%ashPWWWWnWoWassemblageW,W0WlWmWassemblagesWLWMWassemplagesLWMWassignedWWWassociatedWW?WeWWWWWWWWWW&W0WWWassociationWatWWW>W?WWWWWWWWWWWW W W#W(W1W9W:W>W?WHWIWRWUWdWeWhWiWaudry&WaugiteWWlWmWauthorsWWavalancheWWavalanchesWaverageWWWawayrWsWbackWbainbridgeWWWWbandWbanded(WHWOWPWSWVWbandingNWPWbandshWiWbarchan>WbarrenUW[Wbarrenmoraineasmuchas1-mileinfrontofpresentglacierUV[Vk`bars@be@bedrockundivided@biotite-plagioclase@-body@brown-colored@fby@c@cheiflyjurassicvolcanicrockslocallyincludesmesozoican@vchieflyrubblegravelsandsiltandclaytalusandotherslo@clinopyroxene-plagio@coarse@common@Bcommonly@Lconcretionarypyriticandglauconiticreddish-weatheringdar@Nconfluence@`consisting@consistsofunsortedbouldertofine-graineddebrisonthes@consolidated@Ocontains@_correlated@rdacite@ddarkgraywellbeddedfinegrainedsiltstoneandshaleinbe@dark-grayflyschofthintothick-beddedsandstonepebblysa@dark-rusty@7andWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WWWWWWWWWW#W$W%W'W(W)W*W+W,W-W.W/W0W1W2W3W4W5W6W7W8W9W:W=W>W?W@WAWBWCWDWFWHWIWKWNWPWQWSWTWVWWW\W]W^W_WaWcWdWeWfWgWhWiWjWkWmWoWpWrWsWuWwWyWzW~WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW>J MetamorphicK1135ATovB&Orca Group: Volcanic rocks, undividedC"Tertiary, Eocene (?) and PaleoceneDMostly tabular or lenticular bodies of mafic volcanic rocks altered to greenstone and not examined in detail. As mapped, may include pillowed or massive flows, broken pillow breccia, tuff, and dikes.GSR002H333ISewardJIgneousK1135ATovB&Orca Group: Volcanic rocks, undividedCTertiary, Eocene and PaleoceneA Thick and thin tabular bodies of altered tholeiitic basalt. Pillowed, massive or crudely columnar flows; pillow breccia, aquagene tuff, and diabase or gabbro sills. Local interbedding of mudstone and siltstone. Metamorphosed to zeolite or prehnite-pumpellyite facies. GCV003H333ICordovaJIgneousK1135ATovB&Orca Group: Volcanic rocks, undividedC"Tertiary, Eocene (?) and PaleoceneQbeWWWWWWWWWWBWTWWWWWWWWW#WrWsWtWuWWbeachWWWWWW'W(W)W*W+W,W.W0W1W9W:WbeachesWWWW'W(W-W/Wbeachesspitsandoffshorebarsconstructionalshorelinedep-VbecauseWWbecome;W=WbecomesrWsWbeddedWWWWWW.WbeddingWWWWWW0W7W;W=WpWqWtWuWbedrockWWWWWWW WWTWWW*~ soundWW'WWWWWWWWWWWWWWWW W$W9WEWLWgneous܂؂ڂ݂ႁ₁낁삁킁  !"#$%&'()*456@BEFGHImetamorphicقۂ78?tectonite,-/013JKunconsolidated߂ႀ₀む䂀傀悀炀肀邀ꂀ낀삀킀  !"#$%&'()*+,-./0123456789:;<-fbodyWW#W&Wbog%WborderWW.WbordersWWbothW(WHWJWKWbottomCWDWWWboudlersWWboulder WPWZWWWWWWboulder-bearingWWbouldersWWWWWWWWWWWW0W1WWWWboumaWbowserjWlWmWbpWbrecciaWWWWWWWWWWWWWWWWWWWWW@WAWBWCWxWzW|W~WWWWbreccias{Wbremner>WbrightWWnWoWbrokenWWWW.WbrooksjWlWnWqWtW{WbrookslakedriftiliukstadenVbrownWWWWWWW&W/WPWfWnWoWtWuWrownishtWuWbrownish-grayhWiWbrushVW_WiWkWbuffW WbutW$WWWWWWWWWWWW WWWWWWW7WLWMWPWlWmWmaficdikessillsandplugsstronglyalteredintrusionsofdVmaficsheeteddikesarebasalticincompositionandformthe VmaficsheeteddikesformingthetopographicallyruggedcrestV Vmagmatic$W%Wmagnetite W"WlWmWmagoonWmainWWmainlyWWWW$W)W*W,WWWWWWWWW'W9W:W]W^WcWjWpWqWtWuWxWWWWmainlybiotite-hornblende-qdioriiteVmainlygravelandcoarsesandconsistsinpartofglacialanVmainlyunsortedgravelsandandsiltproduceddepositedandVmainlyvolcanicbrecciaagglomeratelavaflowsandtuffsedixVVmajorWWWCWDWW&WmakeWpWqWmakesWWWWWWmakingvWwWmanltedWWWWmantleTWWmantled`WmWoWpWrWsWuWvWwWxWyWzWWDMostly tabular or lenticular bodies of mafic volcanic rocks altered to greenstone and not examined in detail. As mapped, may include pillowed or massive flows, broken pillow breccia, tuff, and dikes.GCV002H33ICordovaJIgneousK1135ATopBOrca Group: Pillow basaltC(Tertiary, Paleocene and early Eocene (?)A.Pale- to dark-green aphyric to porphyritic, commonly amygdaloidal, pillow basalt composed of plagioclase and clinopyroxene; plagioclase is generally replaced by albite and(or) chloritie; vesticles mostly filled with chlorite; pillow basalt in some areas grades into subordinate pillow breccia and tuff..GBS004H17I Blying SoundJIgneousK1136AKvpBValdez Group: Pillow basaltCLate CretaceousATopBOrca Group: Pillow basaltC(Tertiary, Paleocene and early Eocene (?)A.Pale- to dark-green aphyric to porphyritic, commonly amygdaloidal, pillow basalt composed of plagioclase and clinopyroxene; plagioclase is generally replaced by albite and(or) chloritie; vesticles mostly filled with chlorite; pillow basalt in some areas grades into subordinate pillow breccia and tuff..GSR004H17ISewardJIgneousK1136AKvpBValdez Group: Pillow basaltCLate CretaceousAnPale- to dark-green aphyric to porphyritic, frequently amygdaloidal, pillow basalt composed to plagioclase and clinopyroxene; plagioclase commonly replaced by albite and epidote, and clinopyroxene by hornblende, actinolite, and(or) chlorite; vesticles mostly filled with chlorite; pillow basalt in some areas is interlayered with subordinate pillow breccia and tuff.nGSR004H33ISewardJIgneousK1136ATopBOrca Group: Pillow basaltC"Tertiary, Eocene (?) and PaleoceneAnPale- to dark-green aphyric to porphyritic, frequently amygdaloidal, pillow basalt composed to plagioclase and clinopyroxene; plagioclase commonly replaced by albite and epidote, and clinopyroxene by hornblende, actinolite, and(or) chlorite; vesticles mostly filled with chlorite; pillow basalt in some areas is interlayered with subordinate pillow breccia and tuff.nGBS004H33I Blying SoundJIgneousK1136c‚ATopBOrca Group: Pillow basaltC"Tertiary, Eocene (?) and PaleoceneAPillow breccia and massive flows are subordinate in quantity to pillow basalt. Minor intercalated sedimentary rocks are predominantly siliceous mudstone and argillite. Interpillow material consists of silicious mudstone, sandstone, or carbonate rocks. Pillow basalts are porphyritic and have phenocrysts of plagioclase and clinopyroxene; olivine is present but not abundant. Altered brown-colored volcanic glass makes up much of the matrix especially in the outer parts of pillows. VesticlBes are usually filled with calcite and (or) chlorite. This unit is gradational into sheeted dikes on Glacier and Knight Islands and into mixed sedimentary and volcanic rocks elsewhere.GSR002H330ISewardJIgneousK1136‚AKvpBValdez Group: Pillow basaltCLate CretaceousAPillow breccia and massive flows are subordinate in quantity to pillow basalt. Minor intercalated sedimentary rocks are predominantly siliceous mudstone and argillite. Interpillow material consists of silicious mudstone, sandstone, or carbonate rocks. Pillow basalts are porphyritic and have phenocrysts of plagioclase and clinopyroxene; olivine is present but not abundant. Altered brown-colored volcanic glass makes up much of the matrix especially in the outer parts of pillows. VesticlBes are usually filled with calcite and (or) chlorite. This unit is gradational into sheeted dikes on Glacier and Knight Islands and into mixed sedimentary and volcanic rocks elsewhere.GBS002H330I Blying SoundJIgneousK1136@estimatedWWeuhedralWWWevansWWWWevenW WeventsWWexaminedWWexceptWW'Wexist WexistinggWhWexplainWexposedWW1W>W?WDWexposure#Wexposures$W%W@WBWextendsWWextension6W‚‚ATopBOrca Group: Pillow basaltC"Tertiary, Eocene (?) and PaleoceneAPillow breccia and massive flows are subordinate in quantity to pillow basalt. Minor intercalated sedimentary rocks are predominantly siliceous mudstone and argillite. Interpillow material consists of silicious mudstone, sandstone, or carbonate rocks. Pillow basalts are porphyritic and have phenocrysts of plagioclase and clinopyroxene; olivine is present but not abundant. Altered brown-colored volcanic glass makes up much of the matrix especially in the outer parts of pillows. VesticlBes are usually filled with calcite and (or) chlorite. This unit is gradational into sheeted dikes on Glacier and Knight Islands and into mixed sedimentary and volcanic rocks elsewhere.GCV002H330ICordovaJIgneousK1136‚ATopB+Ophiolite of Glacier Island - Pillow basaltC*Tertiary, Eocene (?) and Paleocene (added)‚APillow basalt and lesser massive basalt and broken pillow breccia make up most of the western flank of the mafic complex on the Resurrection Peninsula. These pillow basalts from a west-dipping sequence and contain minor amounts of interbedded siliceous siltstone. This unit is remarkably similar to the pillow basalt unit of the Orca Group exposed on Knight Island. Discrete pillows average 2 ft in diameter and are metamorphosed to the lowest greenschist facies.GBS002H612I Blying SoundJIgneousK1136kGpeninsulaWW W$W%W(W@WBWHWIWlWmWtWuWperWWpercentWWWWWWWWWWWW WWWW9W:WPWlWmWpWqWtWuWvWwWperceptibleWperidotite&W'W(WHWIWpetrographyWWWfine WW#W=WBWWWWWW WWW9W:WWWfinetomedium-grainednonfoliatedquartzdioriteVVfine-grained0W1W>WPWWWWWW.WEWFWrWsWWfine-grainedaphaniticlightgrayfelsiteVfine-scaleWfinelyEWFWfinerWfiner-grainedWWWrWsWfirsttWuWfissilevWwWfitzjWflankWWWWWflanksWflatWflats'W(W0W1W4W>W‚‚AKvdB#Valdez Group: Sheeted basalt dikesCLate CretaceousADark-green, gray, and brown aphyric to porphyritic and locally gabbroic dikes composed mainly of plagioclase and clinopyroxene; olivine present in a few dikes; plagioclase generally is replaced by albite, and clinopyroxene commonly replaced by hornblende with fringes of actinolite; olivine partly altered to serpentine; fine-grained basalt is commonly altered to an aggregate of chlorite, epidote, and actinolite; gabbroic dikes contain a few percent opaque minerals; Sheeted basalt dikesGBS004H35I Blying SoundJIgneousK1137‚ATodB!Orca Group: Sheeted basalt dikesC(Tertiary, Paleocene and early Eocene (?)‚ADark gray or green pillow basalt flows and minor massive basalt flows. Basalts are fine to medium grained, porphyritic with phenocrysts of plagioclase and clinopyroxene; olivine is present but not abundant. Pillows average 0.3 m in diameter. Altered brown volcanic glass makes up much of the inter-pillow matrix. Vesicles are usually filled with calcite and/or chlorite. This unit is gradational into sheeted dike unitGSR005H3123ISewardJIgneousK1136 UaplainsWWWcWfWpleistoceneWplugWWWplugsWWWWWWpluton WWW$W%WplutonicWW'W)W5WWWWplutonicrocks)Vplutonicrocksundivided5VplutonicrocksundividedchieflytonaliteandtrondhjemiteVplutons WWWWWWWWW$W%WWWpodsW$W%WpogibshixWWpointW<W@WAWaWdWWWpollyWWpolygonsWWpolymicticWponds#WpoorlyWW5W8WOWTWcWfWWWWWnWoW(valdezgroupsheetedbasaltdikesVVvaldezgroupsheeteddikesV Vvaldezgroupultramaficrocks(VGVHVIVvalleygWhW|W}WWWWWWvegetated)W,W2WvolcanicWWWWWWWWWWWWWWWWWWWW1W@WBW}WWvolcanicavalanchedepositsVvolcanicrocksV}VvolcanicrocksofredoubtvolcanoV‚‚AKvdB#Valdez Group: Sheeted basalt dikesCLate CretaceousADark-green, gray, and brown aphyric to porphyritic and locally gabbroic dikes composed mainly of plagioclase and clinopyroxene; olivine present in a few dikes; plagioclase generally is replaced by albite, and clinopyroxene commonly replaced by hornblende with fringes of actinolite; olivine partly altered to serpentine; fine-grained basalt is commonly altered to an aggregate of chlorite, epidote, and actinolite; gabbroic dikes contain a few percent opaque minerals; Sheeted basalt dikesGSR004H35ISewardJIgneousK1137‚ATodBOrca Group: Sheeted dikesC"Tertiary, Eocene (?) and Paleoceney‚ADark-green, gray, and brown aphyric to porphyritic and gabbroic dikes composed mainly of plagioclase and clinopyroxene; plagioclase and clinopyroxene; felsic plagioclase-quartz dikes occur locally; plagioclase-clinopyroxene-olivine dikes are present but not common; plagioclase generally is replaced by albite; clinopyroxene largely is replaced by hornblende with fringes of actinolite; olivine is partly altered to serpentine; fine-grained basalt is commonly altered to an aggregate of chloritBSe, epidote, and actinolite; gabbroic dikes contain a few percent of opaque mineralsAGSR004H21ISewardJIgneousK1137D‚‚AKvdBValdez Group: Sheeted dikesCLate CretaceousAMafic sheeted dikes forming the topographically rugged crest of the Resurrection Peninsula are similar to the sheeted dikes unit of the Orca Group on Knight Island. Most dikes are 3 to 6 ft thick, vertical, and generally have a parallel north-south orientation. Locally cross-cutting dikes intrude preexisting dikes at low angles. Aphanitic, porphyritic, and diabasic textures are common even across one outcrop. Weathering color varies from buff to dark gray to dark green and along with tBhe textural variations suggest slightly differing compositions and (or) cooling rates. The sheeted dikes grade westward into pillow basalt and eastward into gabbro.GBS002H613I Blying SoundJIgneousK1137‚ AKvdBValdez Group: Sheeted dikesCLate Cretaceous‚AORCA GROUP: Mafic sheeted-dike complexes in the Orca Group occur on Knight and Glacier Islands. The dikes are basaltic in composition and display diabasic, equigranular, and porphyritic textures. Phenocrysts of plagioclase and clinopyroxene are common. Small irregular pods, veins, and dikes of plagiogranite were observed in the dike complex north of Bay of Isles on Knight Island. Also on Knight Island, numerous major and minor shear zones consist of chlorite schist, tuffaceous rocks, Band sheared pillow basalt and are commonly cut by unsheared mafic dikes. This unit is metamorphosed to greenschist facies locally on Knight Island.GSR002H334ISewardJIgneousK1137j"`pleistoceneWWWWWWWW WWWW/W9W:W;W?WCWDWLWmWnWoWpWqWrWsWtWuWvWwWxWyWzW{W|W}WWWWWWWWWWWWWWWWWWWpliensbachian2WplioceneWWWWWW2unitsWWWWWWlWmW{Wunmodified`Wunmodifiedmorainedepositsormantledbyloessgenerally2`VunnamedW.W/WunshearedWunsortedWWWWWWWWWW WWWPWWWZWunsortedbouldertoclay-sizeparticlesmorainallandformscZVunsorteddepositsoffinetocoarserubble VVunstableWWWWunweatheredOWupWWWWWWWWWPWpWqWvWwWuplandWWuplift0W1Wuplifted7WupperWWWWWWWWQWRWTWUWrWsWvWwWupperamphibolitefaciesschistandgneissinterlayeredatsRVUVWQWvalleyWWWWWWWWWWWWWWvalleysWCWDWWvariableWWWWWWW'W6WAWCWvariableproportionsofinterbeddedtholeiiticbasaltandtuVvariably<WvariationsW W‚ ‚ ATodB+Ophiolite of Glacier Island - Sheeted dikesC*Tertiary, Eocene (?) and Paleocene (added)AMafic sheeted dikes are basaltic in composition and form the lower oceanic-crust part of the ophiolite of Glacier Island. The dikes are diabasic, equigranular, and porphyritic. Phenocrysts of plagioclase and clinopyroxene are common. Facings on chilled margins and other field observations indicate that the dikes were intruded into, between, and across pre-existing dikes. Most dikes are vertical in orientation. The chemistry from typical mid-ocean ridge basalt (Crowe and others, 1992) and tBhe ophiolite is part of a 80 km long belt of ophiolitic rocks that starts at Elrington Island to the south and includes Knight Island, Glacier Island, and the Ellamar areaF37.6Ma 0.6, plag, plateau ageGSR005H3128ISewardJIgneousK1137‚ ATiBIntrusive rocksCTertiaryDADikes, sills, and stock-lke masses of felsic to mafic compositionGKN002H1200IKenaiJIgneousK1200‚ ATgc‚ AMafic sheeted dikes forming the topographically rugged crest of the Resurrection Peninsula are similar to the sheeted dikes unit of the Orca Group on Knight Island. Most dikes are 3 to 6 ft thick, vertical, and generally have a parallel north-south orientation. Locally cross-cutting dikes intrude preexisting dikes at low angles. Aphanitic, porphyritic, and diabasic textures are common even across one outcrop. Weathering color varies from buff to dark gray to dark green and along with tBhe textural variations suggest slightly differing compositions and (or) cooling rates. The sheeted dikes grade westward into pillow basalt and eastward into gabbro.GSR002H613ISewardJIgneousK11377$tops>WWWtoscWtowards WtpvWWWtrainWWWWtransgressiveWtransitionalWNWOWtrench0Wtrend#WtrigonialWmWtrondhjemiteWWWtrondjemitetufaceousLWMWtuffWWWWWWWWWWWWWWWWWW,W.W@WBWEWFWLWMWxWzW|W~WWWWWtuffsandstoneagglomeratebrecciaandsomelavaflows|V~VtuffaceousWWWWWWWWWW@WBWWWtuffaceoussedimentaryrocksvolcaniclasticsandstoneandmiVVtuffs{WgradedgWhW|W}WWWWWWWWW7W;W=WpWqWtWuWgradedtomorainesofalaskanageandtoexistingglacierfrgVhVgradedtomorainesofnaptowneage|V}VgradesWWWWWAWCWPWgrained=WWWWWWWWWWW'W9W:WPWtWuWgrains/WgraniteWWWWW W WWWWWWWWWOWWgranitic WWWW/WPWlWmWtWuWWgraniticrocksofthealaska-aleutianrangebatholithVgraniticrocksofthehardingicefieldextrapolatedfromdesVgranitic-texturedWgranitoidWgranitoidrocksbiotiteandbiotite-hornblendegranodioriteVgranodioriteWWWWWWWWWWOWXW{WWWgranodioriteandquartzdioriteXVVgraywellbeddedfinetomediumgrainedalternatinglayersoVgraywackeWgreaterWofWWWWWWWWWWWWWWWW W W WWWWWWWWW'W(W)W*W,W-W0W1W2W3W4W<W>W?WBWFWGWIWJWOWPWUWVWWWZW[W\W]W^W_WbWgWhWjWlWmWoWpWqWrWsWtWuWvWwWxWyWzW|W}WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W W WWWWWWWWWWWW W"W#W$W%W&W'W(W,W3‚ BCedar Bay graniteCTertiary, Eocene (?)DLight-gray and pink medium- and coarse-grained muscovite (biotite) granite; plagioclase ranges from oligoclase to andesine in composition, and biotite is commonly less than 1 percent.GSR004H9ISewardJIgneousK1270‚ ATgBGranite and granodioriteCTertiary, OligoceneAThe central part of the plutons are dominantly light-gray, medium- to coarse-grained granite with color index ranging from 3 to 8. The plutons grade outward to fine- to medium-grained, more mafic mineral-rich (color indices of 10 to 20) margins of granitic, granodioritic, and sometimes tonalitic compositions. Hypidiomorphic-granular texture is most common, but equigranular as well as porphyritic varieties also exist. Primary biotite is the most abundant mafic mineral and is sometimes ac‚ ‚ATgBLeucocratic GraniteC OligoceneALight colored, leucocratic biotite granite. Color index 5. Common textures are allotriomorphic granular and hypidiomorphic granular. Comprises several igneous bodies - plutons of Cedar Bay, Terentiev Lake, Granite Cove, and Columbia Glacier stock and an unnamed elongate body northeast of Miners Lake. Also associated with pluton of Miners Bay. Correlated with other 34-Ma plutons in Prince William Sound, however, is more leucocratic and contains greater amounts of silica and alkalisFAr/Ar 25.4 0.1 Ma, kspar, plateau age; 29.2 0.3 Ma, microcline, isochron age; 31.7 0.1 Ma, kspar, plateau age; 29.2 0.1 Ma, kspar, plateau ageGSR005H3119ISewardJIgneousK1270‚ATgBGranodiorite and graniteCTertiary, OligoceneC‚ Bcompanied by hornblende. Towards the pluton margins, however, hornblende comonly dominates over biotite. Optically determined plagioclase compositions range from oligoclase to andesine for all rocks of this unit. F4K/Ar dates from 34.2 + or - 1.7 to 36.2 + or - 1 Ma.GSR002H420ISewardJIgneousK1270medium-grayWWmelange,W.WJWKWmeltwaterWWWWWWmemberWWmembersfWxWmentionedWWWmesozoicWmetaWmetabasaltCWmetachert-Wmetacherts0WmetalimestoneWmetalimestoneargillitequartzitemetatuffgreenstoneandphVmetamorphicWW.W;W=WAWCWLWMW{Wmetamorphism,W/WQWTWWmetamorphosedWWWWWWWWWW-W0W9W:W;W<W=W@WBWDWEWFWLWMWWWyWWmetamorphosedplutonicrocksmostlyti2plutonswithinthegWVmetamorposedyWmetapeliteRWUWmetasandstone7W;W<W=WAWLWMWmetasedimentaryWWAWNWPWpWqWtWuWWmetasedimentary--slaAWmetasilstoneAWmetasiltstone7W8W;W<W=WLWMWmetatuffAWCWWmetavolcanicAWLWMWmetavolcanic--semiscAWWWW!W&W@WZl[light-grayWW W WWaWbWlWmWpWqWlight-grayandpinkmediumandcoarse-grainedmuscovitebiot Vlight-grayhypersthene-augiteandesiticlavabrecciaandassVVlight-graymediumtocoarse-grainedbiotitehornblendegranoVlight-green(WHWlight-tanvWwWlight-yellow-brownWlighterWligniteWWlimestoneWWWWWWWWWWW,W9W:WdWeWfWgWhWiWlWmWnWoWpWqWrWsWvWwWWWlimestonegreytoblackchertandporcellaniteVWjWlithic-rich;W=WlithifiedWWlithofaciesWWlithologicWlWmWlithologicallyWlithologiesWWWWWWW,WlithologyWWlittlemWoWpWrWsWuWwWyWzWloadWWWWlocalWHWKWTW^WWWWWWWWW'WCWOWlocalities(WHWIWlocalizedWk‚‚ATgbBGabbroC)Tertiary, Oligocene, Eocene, or PaleoceneDDark-gray fine- to medium-grained locally porphyritic gabbro composed of subequal amounts of labradorite and clinopyroxene; locally contains olivine on Esther Island; pyroxene largely altered to hornblende north of Paddy Bay.GSR004H7ISewardJIgneousK1294‚ATgdBGabbro and dioriteCTertiary, OligoceneAConsists of mafic rocks belonging to one of the main intrusive events. These rocks are dominantly medium- to coarse-grained gabbro (labradorite-bearing) and subordinate diorite (andesine-bearing) with finer grained borders of quartz gabbro and quartz diorite. Most of the rocks are subophitic, some are hypidiomorphic- to allotriomorphic-granular and a few are porphyritic. The dominant mafic assemblage is clinopyroxene +/- orthopyroxene. Assemblages of primary + subsequent hornblende and‚ALight-gray medium- to coarse-grained biotite (hornblende) granodiorite and granite stocks of central part of map area; larger stocks commonly grade from marginal zones containing more biotite (and locally hornblende) inward to more leucocratic zones; large parts of intrusions are porphyritic and contain orthoclase phenocrysts in a medium-grained groundmass; plagioclase ranges from oligoclase to andesine in composition, and biotite constitutes between 5 and 15 percent; Granodiorite and granBiteFlK/Ar dates on biotite of about 36.6 m.y., 35.5, 36.1, and 36.2 Ma; K/Ar date on hornblende of about 34.4 Ma.GSR004H5ISewardJIgneousK1273ktgc tgdXtggtghti ti2ti3ti3ati3btkƂȂtkbtkgd*tkstkttkthtku)tmtmu'toc䂁傁悁tod togtogb!#togsقtoptops؂ڂ݂ႁtosʂ̂΂ςЂtosatosbtosbdtosctosdtosftosgtoss˂tosv܂ނtots邁tou&tovtovstpstpvtrtrktrmts‚tttwfĂłtyyellow낀126W1957W1966WW1980WaWabandonedW Wabandonedchanneldeposits VabandonedorunderfitstreamchannelVactiveaWadvanceoWpWrWsWuWwWyWzWage?WCWDWWWWWWagglomerateWalaska`WKgranodioritic WgranularWWgravelWWWWWWWWWWWWWWWWWWWWW'W(W)W*W+W,W-W.W/W0W1W2W3W@WAWWW^WaWcWdWfWWWWgravelsiltandsandcommonlyoccuratmouthofsmallsidecVgravelsWWgravityWgrayWWWWWWWWWWWWWWWWWWWWWWWW WLWMWPWSWVWdWeWlWmWtWuWWWgraybandedquartzofeldspathicgneissSVVVgraytotanmassivebeddedfinetomediumgrainedsandstoneVgraywellbeddedfinetomediumgrainedalternatinglayersoVgray-green/WgraywackeW,W-W0W2WJWKWLWMWQWTW]W^WjWpWqWtWuWyWgraywacke-argillite1W>W?Wgraywacke-argilliteandotherconsolidatedrockshighlyfold>V?VgreaterWdark-grayflyschofthintothick-beddedsandstonepebblysaVVdark-graythintothick-beddedsandstonesiltstoneandmudst9V:Vdark-graytoblacksiltstonemudstoneandminorfine-grainedVVdark-greenWWWWWWWDWGWpWqWWdark-greengrayandbrownaphyrictoporphyriticandgabbroiVdark-greengrayandbrownaphyrictoporphyriticandlocallyVVdark-greenmediumtocoarse-grainedgabbroandminorleucogaVy$W%WdebrisWWW WWWWWWWWOWPWSWWWWWWWWWdebrisflowdepositsofcrescentrivervalleyincludesseverVdebrisflowdepositsofnorthforkcrescentriverdepositsoVVdebrisflowdepositsonthenorthflankofredoubtvolcanoiVdecadesWdeepWdeep-seaWdefinitionWdeformedWWWW,W7W;W=Wdegreens W"W‚‚ATgBGranitoid rocksCTertiary, EoceneDGranitoid rocks-- Biotite and biotite-hornblende granodiorite, granite, and minor tonalite; generally medium grained, hypidiomorphic, and equigranular; foliated in many places, especially near contacts with country rocks.FK-Ar ages from 50.5 to 53.5 MaGCV003H205ICordovaJIgneousK1300‚ATggBGranite and granodioriteCTertiary, EoceneAGenerally medium- and medium- to coarse-grained hypidiomorphic-granular biotite granite with border phases of biotite + or - hornblende granite to granodiorite and tonalite. Plutons of this unit are generally medium- and medium- to coarse-grained hypidiomorphic-granular biotite granite with border phases of biotite + or - hornblende granite to granodiorite and tonalite. The mafic mineral content varies with composition such that the color index of the granite ranges from 5 to 10; the graB^nodiorite color index ranges from 10 to 20; and the tonalite color index ranges from 15 to 35.L‚B hornblende +/- biotite are also found, mainly in the dioritic and quartz dioritic rocks. Rocks of this unit are considered to be an early mafic phase associated with the granitic plutons of the granite and granodiorite unit (Tg).FlK/Ar date of 36.6 +/- 1.01 Ma indicating a chronological relation to the granite and granodiorite unit (Tg).GSR002H421ISewardJIgneousK1294glacialW@WAWFWGWHWIWJWKWLWMWUWVWXWYW[W\W]W_WaWbWdWiWjWkWlWWWglacialdeposits\V]VglacialdepositsandvolcanicandplutonicrocksundividedVglacialdepositslateralorterminalmorainesGVJVglacialdepositsnaptowneglaciationiVkVglacialdepositsofthenaptowneglaciationjVglacialdepositsofthenaptowneglaciationgroundmorainelVlallotriomorphic-granWalluvialWWWWWWWWWWW WWWW~WalluvialfandepositsofcresecentriverValluvialfansandalluvialfancomplexesV ValluvialfansandalluvialfancomplexesnorthernpolygonsiValluvialfansandalluvialfancomplexessouthernmostpolygoValluvialfansandconesunsortedrocktalusinpartcolluviaVV  !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~+granodiorite WWWW*WWgranodioriteandgraniteVgranodioritequartzdioriteanddiorite*VgranodioriticXWgranodioriticrocksXVgraywacke2Wgraywacke-argillite1W>W?Wgraywacke-argilliteandotherconsolidatedrocks>V?VgreenstoneWWWWDWgroundWWlWgroupWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W!W"W#W$W%W&W(W7W8W9W:W;W<W=W@WAWBWCWDWGWHWIWLWMWNWOWPWlWmWnWoWpWqWrWsWtWuWvWwWhanging?Whangingdeltadepositsofnaptowneage?Vharbor_W`WhardingWWhemlockWhillsWWWholoceneWholocenevolcanicrocksVhornW‚FRSix K/Ar ages on hornblende, biotite, and phlogopite ranging from 50.5 to 53.5 Ma GCV002H440ICordovaJIgneousK1300‚ATfB Felsite DikesCTertiaryAIncludes two types: (1) leucocratic porphyry dikes with 20%-30% euhedral phenocrysts of potassium feldspar and quartz in a fine grained allotriomorphic groundmass. Intrudes only the Orca Group; (2) allotriomorphic granular, white weathering, fine grained dikes with approximately 30% quartz, 60% feldspar, and 20% altered mafic minerals. Thickness ranges from 0.3 m - 2 m. Intrudes the Orca and Valdez GroupFtAr/Ar 38.6 0.6 Ma, biotite, plateau age; 40 1 Ma, biotite, disturbed, wt. avg.; 31.1 0.2 Ma, kspar, isochron ageGSR005H3107ISewardJIgneousK1301‚ATi3BTonaliteCTertiaryDMostly biotite tonalite but also includes biotite-muscovite +/- garnet tonalite and trondhjemite. Includes both weakly foliated, syn-D plutons (Ti3a) and unfoliated, post D plutons (Ti3b)GCV005H505ICordovaJIgneousK1310‚ATi2E1000WWWW1000-m-thickW12W1200WWWW125@WAWaWdW125-m-thicknWoW1300&WWW15-cmW150W1500W18W1962W1966WW1974W1975WW1976W1977W1978WW1979W1981WWW1985W1992 W1:1W2`WmWoWpWrWsWuWwWyWzWWWWWWWWWWW2-mW20WW WWWWWW200W25WWWW3WW W W30WWWWW300W300-700WWW312WW34-maW35WWW3500W3500-year-oldW45WW4918W5WWWWWWWWWWW!W50W500-ftvWxW6`WmWoWpWrWsWuWwWyWzWW W60W65-ft-wide$W%W650&W7.57WW75WWW750WW8WWW W80 W‚B Tonalite CTertiaryDMostly hornblende-biotite tonalite but also includes biotite tonalite. Strongly foliated and lineated plutons with fabrics subparallel to D2 in adjacent metamorphic rocksGCV005H506ICordovaJ MetamorphicK1310‚ATi2B Tonalite CTertiaryDMostly hornblende-biotite tonalite but also includes biotite tonalite. Strongly foliated and lineated plutons with fabrics subparallel to D2 in adjacent metamorphic rocksGCV006H504ICordovaJ MetamorphicK1310‚ATi3bBTonaliteCTertiaryD}Mostly biotite tonalite, but also some biotite-muscovite +/- garnet trondhjemite and granodiorite. Unfoliated plutonic rocksGCV006H508ICordovaJIgneousK1310‚ATi3aBTonaliteCTertiaryD7Mostly biotite tonalite, weakly foliated, syn-D plutonsGCV006H512ICordovaJ MetamorphicK1310‚ATgB GranodioriteCTertiary, EoceneD/Medium- and coarse-grained biotite granodioriteFPU-Pb monazite age of 56.0, Ar-Ar biotite ages of 54.2, 53.2, 53.4,53.7, and 54.0GSV002H113ISeldoviaJIgneous"mostlyhornblende-biotitetonalitebutalsoincludesbiotiteVVmostlytabularorlenticularbodiesofmaficvolcanicrocksVVmottledpWqWWmottledandesitictufftuffaceoussandstoneandsiltstoneloVmountWWPWWmountainCWDWWWWWWmountainsWWWmouthW?WmtWmuchUW[WWWWWWWWWWW!W9W:WlWmWnWoWtWuWmuckBWmud0W1W6Wmud-chip.WmudflowWWWWWmudflowanddebrisflowdepositsmayincludesomevolcanicmVVmudflowsWmudstoneWWWWWWWWWWWWWWWWWWWWWWW9W:WmudstonesWWW^tmultiple@nonvegetated@=occur@of@.off@qone@orcagroupmediumanddark-graytogreencoarse-grainedchie@other@outwashdepositsassociatedwithmodernandholoceneglacier@parts@peninsula@petroleum@kpillowbasaltandlessermassivebasaltandbrokenpillowbr@ plains@poorlysortedpolymicticconglomerategraywackeandsiltston@Upossession@ present@progressive@quartzdioritedioriteandgranodiorite@|radiolarian@ratios@regional@ relatively@Srest@arockavalanchedeposits@brubble@5sand^sandgravelandcobblesofpresentandformerbeachesbeach@sandstoneconglomerateandsiltstone@schwan@)separatable@;several@significant@sills@.silty@?slope‚K1320‚ATghB"Granite of Harding Icefield regionCTertiary, EoceneAMedium- to dark-gray foliated amdium- to coarse-grained biotite-muscovite-(hornblende) granite and granodiorite; marginal phases are locally biotite-muscovite-(hornblende) tonalite; mafic minerals, almost wholly biotite, constitute 20 to 30 percent of minerals in tonalitic rocks, 15 to 20 percent of minerals in tonalitic rocks, 15 to 20 percent of granodiorite, and 5 to 10 percent of granite; muscovite, a late but primary mineral, commonly makes up less than 2 percent.FLK/Ar dates on biotite of about 59.2 m.y. and on muscovite of about 54.6 m.y.GBS004H11I Blying SoundJIgneousK1320‚ATghB"Granite of Harding Icefield regionCTertiary, Eocene‚‚ATggBGranite and granodioriteCTertiary, EoceneAGenerally medium- and medium- to coarse-grained hypidiomorphic-granular biotite granite with border phases of biotite + or - hornblende granite to granodiorite and tonalite. Plutons of this unit are generally medium- and medium- to coarse-grained hypidiomorphic-granular biotite granite with border phases of biotite + or - hornblende granite to granodiorite and tonalite. The mafic mineral content varies with composition such that the color index of the granite ranges from 5 to 10; the graB^nodiorite color index ranges from 10 to 20; and the tonalite color index ranges from 15 to 35.LFRSix K/Ar ages on hornblende, biotite, and phlogopite ranging from 50.5 to 53.5 Ma GSR002H440ISewardJIgneousK1320‚ATghB GranodioriteCTertiary, EoceneDMedium- and coarse-grained biotite granodiorite of the Aialik pluton and Paguna stock -- assigned to granitic rocks of the Harding Icefield. Same as NSA 1200 of source KN003]‚AMedium- to dark-gray foliated medium- to coarse-grained biotite-muscovite-(hornblende) granite and granodiorite; marginal phases are locally biotite-muscovite-(hornblende) tonalite; mafic minerals, almost wholly biotite, constitute 20 to 30 percent of minerals in tonalitic rocks, 15 to 20 percent of minerals in tonalitic rocks, 15 to 20 percent of granodiorite, and 5 to 10 percent of granite; muscovite, a late but primary mineral, commonly makes up less than 2 percent.FLK/Ar dates on biotite of about 59.2 m.y. and on muscovite of about 54.6 m.y.GSR004H11ISewardJIgneousK1320}`generallymediumandmediumtocoarse-grainedhypidiomorphicVVgeneticallyWWWWgive/WglacialWWWWWWWWWWWWWWWBWLWMWXWYW\W]WWWWglacialdepositsLVXVYVglacialdepositsandvolcanicandplutonicrocksundividedV‚FPU-Pb monazite age of 56.0, Ar-Ar biotite ages of 54.2, 53.2, 53.4,53.7, and 54.0GSV009H9113ISeldoviaJIgneousK1320‚ATghB GranodioriteCTertiary, EoceneDGranitic rocks of the Harding Icefield extrapolated from description of Tysdal and Case (1979) in the adjoining Seward quadrangle. Nunataks were mapped by Magoon and others (1976) as Valdez Group.FPU-Pb monazite age of 56.0, Ar-Ar biotite ages of 54.2, 53.2, 53.4,53.7, and 54.0GKN015H1513IKenaiJIgneousK1320‚ AKvgBValdez Group: GabbroCLate CretaceousAGreen massive medium- to coarse-grained and locally pegmatitic gabbro composed chiefly of labradorite and clinopyroxene; commonly altered to varying degreens; pyroxene altered to green hornblende which is partly replaced by actinolite and(or) chlorite; plagioclase commonly replaced by albite and epidite group minerals, and white mica; accessory minerals include magnetite, apatite, and quartz.GBS004H37I Blying SoundJIgneousK1374‚!ATogbvcWcalcareousWWWWWWWWlWmWcalciteWWWW.W/WcalledrWsWcanW#WcanyonWcanyonsWcape0W1WWWWcarbonaceousWWWWWWWcarbonateWWWcaribouWWWcaseWWcasesWWWcastsWWWWcedarWcenozoicWcenterWcentersWcentimetersW7W<WRWUWcentral WW]W^WchangeslWmWchannelWW WWWWchanneledCWDWchannelsWWchaotic0WchaoticallyWcharacter@WBWcharacteristicWWWWcharacterizedWlWmWcheiflyWistry WchertWW,W.W/W3W@WBWchevronWWchieflyWWWW#WSWWWWWWWW W!W"WLWMWchieflyrubblegravelsandsiltandclaymostextensiveinjV‚!BOrca Group: Gabbro and dioriteC(Tertiary, Paleocene and early Eocene (?)AORCA GROUP: Medium- and dark-gray to green coarse-grained chiefly clinopyroxene-plagioclase rocks with ophitic to subophitic texture and gabbroic to dioritic composition; locally pegmatitic with clinopyroxene crystals as much as 5 cm long; clinopyroxene commonly is partly replaced by uralitic amphibole and chlorite; plagioclase is partly replaced by albite; epidote and minor opaque minerals are commonGSR004H25ISewardJIgneousK1374‚"AKvgBValdez Group: GabbroCLate CretaceousAGreen massive medium- to coarse-grained and locally pegmatitic gabbro composed chiefly of labradorite and clinopyroxene; commonly altered to varying degreens; pyroxene altered to green hornblende which is partly replaced by actinolite and(or) chlorite; plagioclase commonly replaced by albite and epidite group minerals, and white mica; accessory minerals include magnetite, apatite, and quartz.GSR004H37parts4WbWWWWWWWtWuWpeat#W6WBWpebbleWWWWWWWpWqWpebbleandboulder-bearingdiamictonobservedatoneuplandVVpebble-sized WpebblesWW5W8W9W:WpebblyWWWWWWW7W;W<W=Wpegmatitic W!W"WpelecypodslWmWpeliticNW;orcagroupmediumanddark-graytogreencoarse-grainedchie!Vorcagrouprangesfrommatrix-supportedpebblymudstoneandVVorcagroupseveralsmallintrusivebodiesofgabbrooccuron#Vorcagrouptwooftheseperidotitebodiesoccurwithinorne&Vorganic#W$W2W3W6WWWorganic-carbonWWorganic-richWWorientationW W Woriented;W=WoriginWWWWWoriginalWNWoriginallyDWorthoclaseWWorthogneissPWorthopyroxeneWorthopyroxenite'Wx‚"ISewardJIgneousK1374‚#ATogbBOrca Group: GabbroC"Tertiary, Eocene (?) and PaleoceneAORCA GROUP: Several small intrusive bodies of gabbro occur on Knight Island. The largest body crops out east of Drier Bay, where it intrudes sheeted dikes. Other gabbro bodies that have been reported are too small to show at the scale of this map. Most of these are elongate parallel to the trend of the sheeted dikes. At the north end of Latouche Island a 100-ft-wide exposure of gabbro can be seen intruding slate and sandstone.GSR002H470ISewardJIgneousK1374‚$AKvgbBValdez Group: GabbroCLate Cretaceous theyWWWWWWWWthick`WWWWWWWWWWWWWW W0W7W;W<W=WrWsWvWwWthickandthintabularbodiesofalteredtholeiiticbasaltpVthicksequenceofmassivebluishdark-grayarenaceouscoarserVsVthicksequenceofrhythmicallyalternatingmultiply-deformed<Vthicksequencesofdeformedandmetamorphosedflyschconsist;V=Vthicksequencesofdrabrythmicallyalternatingmultiplydef7VionWWWthinningWthirdW&W(WthisWWWWWWWWWWWWWWWWWW WWWW#W(WtholeiiticWWthoughtBWTW0Wthree(WthroughoutWWWWthrust/Wti3aWti3bWtidalWW'W(W2W3W4W9W:WtidalsiltandbeachdepositsVVtideWtidewaterWWtightWtightlyWW~‚$‚%AKvgbBValdez Group: GabbroCLate CretaceousATwo north-south-trending plutons of medium- to coarse-grained gabbro occur east of the sheeted dikes unit on the Resurrection Peninsula. Several features are displayed in shoreline exposures of the westernmost pluton that were not observed in the easternmost pluton. Well-developed, west-dipping magmatic mineral layering was observed in shore line outcrops between Driftwood Bay and Talus Bay. Hornblende plagiogranite in a 65-ft-wide stock-work zone from the western pluton has intruded thBe gabbro in Killer Bay. Other small dikes and pods of plagiogranite intrude the gabbro along the west shore of Day Harbor. Mafic dikes intrude the western gabbro pluton and increase in abundance from east to west.GSR002H614ISewardJIgneousK1374‚&ATouBOrca Group: Ultramafic rocksC"Tertiary, Eocene (?) and Paleocene‚$ATwo north-south-trending plutons of medium- to coarse-grained gabbro occur east of the sheeted dikes unit on the Resurrection Peninsula. Several features are displayed in shoreline exposures of the westernmost pluton that were not observed in the easternmost pluton. Well-developed, west-dipping magmatic mineral layering was observed in shore line outcrops between Driftwood Bay and Talus Bay. Hornblende plagiogranite in a 65-ft-wide stock-work zone from the western pluton has intruded thBe gabbro in Killer Bay. Other small dikes and pods of plagiogranite intrude the gabbro along the west shore of Day Harbor. Mafic dikes intrude the western gabbro pluton and increase in abundance from east to west.GBS002H614I Blying SoundJIgneousK1374X Äc1]index WWWW6WindicateWWWWWW WindicatesWWWWindices WindividualpWqWinferredWWWWWFWIWWinferredtoconsistoflodgementtillablationtillandstraFVIVinformally>WxWWiniskincWlWmWtWuWinletWWxWWinnerWinoceramuslWmWintenselyWWinter-pillowWinterbeddedWWWWWWWWWWWWWWWWWWWWWWWW+W@WAWBWHWIWLWMWQWTWlWmWpWqWrWsWxWWW‚&‚'ATmuB#Mafic and ultramafic plutonic rocksCTertiary, Eocene and Paleocene?AMafic and ultramafic plutonic rocks-- Compositionally and texturally variable unit consists mainly of medium grained gabbro, local diabase, hornblende gabbro, peridotite, and orthopyroxenite. Gabbro is slightly to moderately foliated except near contacts with country rock.GCV003H210ICordovaJIgneousK1380‚(AKvuBValdez Group: Ultramafic rocksCLate CretaceousASerpentinized peridotite and dunite occur at three localities underlain by the Valdez Group: two of these are on the Resurrection Peninsula and the third is near the head of Port Fidalgo. This description represents the third at Port Fidalgo. The third outcrop of ultramafic rocks is northeast of the head of Port Fidalgo. This outcrop consists of both banded and massive dark- to light-green serpentized dunite and peridotite. The strongly shared margins suggest that these rocks have beeBn tectonically emplacedGCV002‚&AORCA GROUP: Two of these peridotite bodies occur within or near major shear zones in the sheeted dikes unit; only the larger (650 by 1,300 ft body is shown in the Port Audry shear zone. The third body occurs as a xenolith in sheeted dikes. The ultramafic rocks weather orange brown in color and form subdued rubble outcrops. Minor plagioclase-bearing amphibolite is spatially associated with the peridotite from the Port Audry shear zone. ultramafic rocksGSR002H471ISewardJIgneousK1375ejdikesofdaciterhyoliteandesiteandrarebasaltstoredinVdikessillsandstock-lkemassesoffelsictomaficcomposit VdimensionWdioriiteWdioriteW6WXWWWWWWdioriticW!WdipWdirectionsrWsWdiscontinuous.W0W1W>W?WdiscontinuouslyvWxWWWWWWS159W:WWWWWWpWqW15-cmW150W1500W18W1962W1966WWpWqW1974W1975WW1976WyW1977W1978WW1979W1981WWW0W1985W1992 W1:1W2`WmWoWpWrWsWuWwWyWzWWWWWWWWWWWPW2-mW20WW WWWWWW200W200-m-thickpWqW3WW W W3-40W30WWWWW300W300-700WWW312WW34-maW35WWW3500W3500-year-oldW380lWmW4PW409W:W45WW4918W5WWWWWWWWWWW!W4W50W4W500-ftvWxW560lWmW6`WmWoWpWrWsWuWwWyWzWW W60W65-ft-wide$W%W650&W7.57WW75WWW750WW8WWW W80 W.maficandultramaficplutonicrocks'V‚(H5533ICordovaJIgneousK1380‚)ATKuBPlutonic rocks, undividedCTertiary and CretaceousDPlutonic rocksGKN012H1203IKenaiJIgneousK1650‚*ATKgdB)Granodiorite, quartz diorite, and dioriteCTertiary or late CretaceousGKN002H2905IKenaiJIgneousK1660‚+AKkB.Kaguyak Formation, nonmarine sedimentary rocksCLate CretaceousD7Sandstone, conglomerate, siltstone and interbedded coalA (Not in Bradley, but cited in Magoon and others, 1980): Sporomorphs: Cranwellia striata Srivastava, Balmeisporites spp., Wodehouseia spinata Stanley, Proteacidites spp., Aquilapollenites bertillonites Funkhouser, A. reticulatus Mtchedlishvili, A delicatus Stanley GSV002H72ISeldoviaJ SedimentaryK1961‚,AKPmBMcHugh Complex, undividedCCretaceous to Permianltertiaryandcretaceous)VtertiaryeoceneVVVVVVVVV VVVVVVVVVtertiaryeoceneandpaleoceneVVVVVVVVVVVVVVVVVVVVVVVVVV#V&V'VtertiaryeoceneandpaleoceneaddedV V+kenaiWWWWWkenaiformationVVVVkenaigroupVkilleyuWwWknikWWWWWkulthiethWWkulthiethformationVVlacustrineWW!W"Wlagoonal6Wlagoonaldeposits6VlaharWlahardepositsVlakeCWDWnWqWtW{WlamprophyreWlamprophyredikesVlandslide WWWWWWWlandslideandcolluvialdeposits VVlandslidedepositsVVlandslideslateralGWJWWWlavaWWWWlavaflowsVlavaflowsnorthandsouthtwinvolcaniccenterVleucocraticWleucocraticgraniteVlevee&WlithofaciesWWWWWlower]W^WmaficWWWWWWW'Wm71980+W2000vWwW400vWwW450vWwWaWW+WrWsWabundantfWnWoWabundantammonitefaunawhichincludesoppelialiroxyitesmenVoVabundantfossilsincludingmanyspeciesofammonitescadocerfVabundantlyjWlWmWrWsWvWwWabundantlyfossiliferouscontainingammonitesandpelecypodsjVlVmVacilaWWWage[WlWmWWalderWWWalnusWWWalsofWrWsWvWwWambiguousrWsWammonitenWoWammonites[WfWjWlWmWpWqWrWsWtWuWvWwWammonitesandpelecypodsespeciallybuchiawhichprovidesti[VandWWWWWWW+W,W7W;W=W[WfWjWlWmWnWoWpWqWrWsWtWuWvWwWarerWsWvWaspWqWrWsWasperaWWbalmeisporites+WbathonianlWmWbelWmWbedded3Wbertillonites+WbetweenlWmWbothrWsW=‚,‚-AKJmBMcHugh ComplexCCretaceous and (or) JurassicDWeakly metamorphosed siltstone, graywacke, arkose, and conglomeratic sandstone; greenstone (mostly basaltic), metachert, and argilliteGKN003H2190IKenaiJ TectoniteK2190‚.AKJmBMcHugh ComplexC!Cretaceous and (or) Late JurassicABetween Border Ranges fault and unnamed fault: melange of siltstone, sandstone, mud-chip sandstone, conglomeratic sandstone, tuff, and less abundant gabbro, serpentinite, bedded chert, and pillow basalt; fine-grained sedimentary strata commonly streaked out sedimentary and igneous rocks are broken and discontinuous; metamorphic minerals include muscovite, epidote, calcite, chlorite, albite, and veinlets of prehnite.GSR004H43ISewardJ SedimentaryK2190‚/AKJm?BMcHugh ComplexC!Late Jurassic and (or) Cretaceousa‚,AComplexly deformed tectonic assemblage of diverse lithologies (melange). Lithologies include argillite, tuff, graywacke, basalt, chert, outcrop-scale melange, conglomerate, gabbro, and limestone. Rocks typically show prehnite-pumpellyite facies metamorphism.E!Permian conodonts and fusilinids.GSV002H77ISeldoviaJ TectoniteK2190,Ikvd kvg "OPkvgb$%kvgrDkvmJKNkvs;<=LMkvtEFkvu(GHIkvvCkvvs@ABlimeLlt!W"Wltgreen!V"Vnone炁patternqqa`qac qadqeoqes7qetqfqfl#qfsqftqglfBqgnikqgtV_qgtnU[qida4qifn3qifv2qilqkqkoqktql6qlbCDqlc qld?qlsqlv&qm$EWqmh\]qmiNQqnmqnkuwqnmyzqno|}qnsrs=complex,W-W.W/W0W2W3WWcomplexesWW WconesWWWconglomerateWWWWWW2WcWconsolidated>W?Wq4of.W/W0W1W2W7W9W:W;W<W=W>W?W@WAWBWDWEWFWGWHWIWJWKWLWMWNWOWPWQWRWTWUWWW]W^WaWbWdWeWjWlWmWnWoWpWqWrWsWtWuWvWwWxWyWWWWWW‚/‚0AKmBMcHugh ComplexCEarly CretaceousADescription from Clark (1981, p. 3-4) "The McHugh Complex is a heterogeneous, chaotic assemblage that includes metamorphosed clastic and volcanic rocks of diverse ages. The clastic rocks, which are the most abundant, comprise thick, fault-bounded sequences of weakly metamorphosed graywacke, arkose, siltstone, and conglomeratic sandstone. Bedding is rarely seen and commonly discontinuous. The volcanic portion of the McHugh Complex is composed of greenstones, mostly of basaltic compositioBn, that are associated with radiolarian metacherts, siltite, and argillite***. The volcanic rocks are thought to represent oceanic crust. The clastic sediments are thought to have been deposited in an ocean trench. NOTE: See pamphlet for more detail.GSR002H650ISewardJ TectoniteK2190‚1AJuB6Interstratified graywacke-argillite and volcanic rocksC Jurassic?\‚/ABetween unnamed fault and Eagle River thrust fault (?): massive sandstone that is brown, tan, and gray-green thick-bedded ridge-forming medium- and coarse-grained locally conglomeratic sandstone; abundantmud chips give rock a distinct spotted appearance; sand grains are quartz, plagioclase, basalt fragments, sandstone fragments, clinopyroxene, granitic rock, chert, and basalt; unit locally contains thin beds of chert and siltstone; metamorphism of unit has produced albite, epidote, calcitB4e, and chlorite; prehnite forms veins in some rocks."GSR004H44ISewardJ TectoniteK2190clinopyroxene-plagio!WcloseWtWuWcmW!WcoalWWWWWWWWWWWWW+WvWwWcoal-bearingWWWWWcoal-bearingsemi-consolidatedsiltsandandgravelneartusVcoalikeWcoalyWNepisodes0W1WepisodicWWequalWWW@WAWBWequalproportionsofinterbeddedmetavolcanicandmetasedimeAVequigranularW W WWequivalentWWequivalents{WerlingtonWWerosionWerosionalWeruptionsPWespeciallyWWWWestherW|radiolarian0W3WradiolariansWWraggedWWWramparts WrandomlyW;W=WrangeW W;W=WtWuWWrangesFWIWWWW WWWWW.WjWlWmWrangesfrommatrix-supportedpebblymudstoneandsandstonetVrangingW W9W:WrankWrapidWWWlWmWrapidlyrWsWrareWWWWW7W;W<W=WtWuWWWrarely0WratesW Wrationis6W ‚1DInterstratified graywacke-argillite and volcanic rocks. Highly folded and fractured. Exposed at surface or beneath thin discontinuous deposits of Quaternary ageGKN013H302IKenaiJ TectoniteK2190‚2AKPmsB*McHugh Complex, graywacke and conglomerateC2Early Cretaceous to Early Jurassic (Pliensbachian)D;Fault-bounded slices of massive conglomerate and graywacke.E3Pliensbachian radiolaria in underlying ribbon chertGSV002H75ISeldoviaJ SedimentaryK2198‚3AKPmcB McHugh Complex, basalt and chertC7Early Cretaceous (Albian) to Middle Triassic (Ladinian)DHPillow and massive basalt, depositionally overlain by radiolarian chert.E1Cretaceous to Triassic radiolaria in bedded chertGSV002H74ISeldoviaJ TectoniteK2199‚4AKdBIntermediate dikeCEarly CretaceousDkBasalt-andesite dike intruding McHugh Complex. Stored in coverage as arcs, arc-code = 50 and arc-para1 = 5F&Ar-Ar hornblende plateau age of 115 MaGSV002H0ISeldoviaJIgneousK2401‚5AKuBPlutonic rocks, undividedj/earlycretaceoustoearlyjurassicpliensbachian2VearlyjurassiczV|V~VVVVVearlyjurassicandlatetriassicVearlyjurassichettangiantotoarcianxVVearlymesozoicVearlytertiaryVeoceneWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W WWWWWWWWWW!W#W&W'WeoceneandpaleoceneVVVVVVeoceneandpaleocenechaoticdepositslithofaciesfVfWgivenRWSWUWVWWWhettangianxWWkpillowbasaltandlessermassivebasaltandbrokenpillowbrVpillowbasaltmassivebasaltflowsminorvolcanicbrecciainVVVpillowbrecciaandmassiveflowsaresubordinateinquantityVVVpillowedWWWWWWWWpillowsWWWWWpink WWWpinnacleWWWplacesWW7W9W:W;W=WplafkerWWWplagioclaseWWWWWWWWWWWWWWWWW W W WW W!W"W/W9W:WEWFWplagioclase-bearing&Wplagioclase-clinopyrWplagioclase-quartzWplagiograniteW$W%WW ‚5CLate CretaceousDPlutonic rocks, undividedGKN009H902IKenaiJIgneousK2410‚6AKi12B4Cretaceous intrusive rocks -- Unit 12 Quartz dioriteC CretaceousDLocally foliated, seriate hornblende-biotite quartz diorite. Biotite-hornblende rationis quite variable although color index remains constant. Deuteric epidote common. Extension from adjacent Lake Clark quadrangleGKN008H172IKenaiJIgneousK2430‚7AKvB Valdez GroupCLate CretaceousAThick sequences of drab, rythmically alternating multiply deformed turbidites, including metasandstone, metasiltstone, argillite, slate, and phyllite, and rare beds of pebbly argillite and metasandstone; generally beds are a few centimeters to a few meters thick, but locally massive metasandstone is as thick as several tens of meters. In some places, primary sedimentary structures such as graded bedding, current-ripple cross-lamination, convolute bedding, and sole markings are preserved.E)Maestrichtian and Campanian(?) Inoceramus  kenai68>KXZ\]_acdghklnprtvyz{|} ‚7GSV002H71ISeldoviaJ MetamorphicK2700‚8AKJvBValdez Group (?)CCretaceous and Jurassic (?)D:Metawacke, metasiltstone, and argillite; locally phylliticGKN003H2700IKenaiJ MetamorphicK2700‚9AKvB+Valdez Group: Sedimentary rocks, undividedCLate CretaceousADark-gray thin- to thick-bedded sandstone, siltstone, and mudstone flysch; sandstone is fine to coarse grained and mainly is composed of plagioclase, quartz, and igneous rock fragments, the third ranging from a few percent to as much as 40 percent of rock; conglomeratic sandstone with clasts of sedimentary rocks are widely distributed, occurring at base of some sandstone beds; congloverate composed of well-rounded pebbles and cobbles of felsic porphyry was observed in a few places; dense lBimestone concretions occur locally; unit is metamorphosed largely to chlorite zone of greenschist facies; Sedimentary rocks, undividedtEBMollusc. Inoceramus kusiroensis Maestrichtian Late Cretaceou )GBS004H29I Blying Sound!nthick-beddedWWWWWWWW/W9W:WpWqWthickeningWthickerWWWPWthickestWthicknessFWIWWWWWlWmWthicknessesvWxWthinWWWWWWWWWWWWWWWWW/W1W9W:W>W?WnWoWpWqWtWuWthin-beddedWW]W^W_W`WdWeWhWiWlWmWnWoWtWuWvWwWthin-beddedtomassivearkosicsandstonegraywackeandsilts]V^Vthin-beddedtomassivered-brownweatheringdark-graytomodvVwVthin-sectionWWWthinningWthirdW&W(W9W:WHWIWthisWWWWWWWWWWWWWWWWWW WWWW#W(W@WBWDWHWIWPWfWjWvWwWdalsiltandbeachdepositsVVtideWtidewaterWWtightWtightlyWW ‚9J SedimentaryK2700‚:AKvB+Valdez Group: Sedimentary rocks, undividedCLate CretaceousADark-gray thin- to thick-bedded sandstone, siltstone, and mudstone flysch; sandstone is fine to coarse grained and mainly is composed of plagioclase, quartz, and igneous rock fragments, the third ranging from a few percent to as much as 40 percent of rock; conglomeratic sandstone with clasts of sedimentary rocks are widely distributed, occurring at base of some sandstone beds; congloverate composed of well-rounded pebbles and cobbles of felsic porphyry was observed in a few places; dense lBimestone concretions occur locally; unit is metamorphosed largely to chlorite zone of greenschist facies; Sedimentary rocks, undividedtEBMollusc. Inoceramus kusiroensis Maestrichtian Late Cretaceou )GSR004H29ISewardJ SedimentaryK2700‚;AKvsB+Valdez Group: Sedimentary rocks, undividedCLate Cretaceous1rfidalgo(W@WBWHWIWfield>W WfillWfilledWWWWWWWW: z blyingsoundVV'VVVVVVVVVVVVVVVV V$V9VEVLVcordova邀ꂀ낀삀 !"#-016=>LOWXY^‚ÂȂɂЂт߂ႁ₁悁炁ꂁ'(<=ABCDINOPQRSTUVWislandWWWWWWWkenai܂݂ނႀ炀肀킀  $%&)*+,/234579;W?WvWwWvaldezgroupmetasedimentaryrocksundivided<VvaldezgroupmetavolcanicrocksundividedCVvaldezgroupparagneissPVvaldezgrouppillowbasaltVVVvaldezgroupschistNVvaldezgroupsedimentaryrocksundivided9V:V;V=Vt‚=‚>AKuB0Graywacke-argillite and other consolidated rocksC CretaceousDGraywacke-argillite and other consolidated rocks. Highly folded and fractured. Exposed at surface or beneath thin discontinuous deposits of Quaternary ageGKN013H301IKenaiJ SedimentaryK2700‚?AKuB0Graywacke-argillite and other consolidated rocksC CretaceousDGraywacke-argillite and other consolidated rocks. Highly folded and fractured. Exposed at surface or beneath thin discontinuous deposits of Quaternary ageGSV007H301ISeldoviaJ SedimentaryK2700‚@AKvvsB9Valdez Group: Interbedded volcanic and sedimentary rocksCLate Cretaceous‚=AThick sequences of deformed and metamorphosed flysch consisting of metasandstone, metasiltstone, argillite, slate, and phyllite, with rare beds of conglomerate and pebbly argillite. In many places primary internal sedimentary structures, consisting of graded bedding, cross laminations, and convolute bedding are preserved. All sedimentary rocks studied contain metamorphic biotite. The sandstones display a moderately developed semischistose texture that has abundant randomly oriented inteBrstitial biotite and less abundant weakly aligned biotite. Sandstones range from lithic to feldspatholithic in composition. Samples become less lithic-rich and more feldspar- and quartz-rich from west to east.ERPelecypod: Inoceramus kusiroensis, Inoceramus ulrichi, and Inoceramya concentricaF5K/Ar date on biotite semischist of 51.5 + or - 1.5 MaGCV002H510ICordovaJ SedimentaryK2700*lamprophyreWWlamprophyredikesVlandformsZWlandmarksWlandslideWWWWWWWWlandslidedebrisnearbluffpointVlandslidesWWWWWWWWWlandslidesunsortedangularrockdebrisderivedbyfailureoV‚@‚AAKvvsB@Valdez Group: Interbedded metavolcanic and metasedimentary rocksCLate CretaceousAEqual proportions of interbedded metavolcanic and metasedimentary rocks. Metavolcanic--semischistose metatuff and breccia and minor pillow basalt. Metasedimentary--slate, phyllite, with metasilstone and metasandstone interbedding. Variable metamorphic grades.GCV003H555ICordovaJ MetamorphicK2702‚BAKvvsB9Valdez Group: Interbedded volcanic and sedimentary rocksCLate CretaceousAThis unit is composed of approximately equal amounts of interbedded volcanic rocks, consisting of volcanic breccia, tuff, tuffaceous sediment, and minor pillow basalt, and sedimentary rocks, consisting of sandstone, siltstone, shale, and chert. The two exposures of the unit differ in character. In the Cordova quadrangle the unit tends to weather orange and includes more sedimentary rocks (including marble) than on the Resurrection Peninsula. Near the head of Port Fidalgo this unit has b‚@AThis unit is composed of approximately equal amounts of interbedded volcanic rocks, consisting of volcanic breccia, tuff, tuffaceous sediment, and minor pillow basalt, and sedimentary rocks, consisting of sandstone, siltstone, shale, and chert. The two exposures of the unit differ in character. In the Cordova quadrangle the unit tends to weather orange and includes more sedimentary rocks (including marble) than on the Resurrection Peninsula. Near the head of Port Fidalgo this unit has bB3een metamorphosed to amphibote-bearing greenschist.!FK-Ar date on amphibote-bearing greenschist of 47.6 + or - 1.4 Ma was reported, those source rocks are now assigned to Orca GroupGSR002H554ISewardJIgneousK2702#Gvaldezgroupinterbeddedvolcanicandsedimentaryrocks@VBVAmetawacke8Wmetawackemetasiltstoneandargillitelocallyphyllitic8Vmeters7W<WRWUWmiWWmica W"WmicaceousWmicriticWWmicrograniticWWWmid-ocean WmiddleWtWuWmiddletonWmigmatiticOWmillerWWmineral WWWWW$W%WLWMWmineral-rich WmineralsWWWWWWWW W!W"W.WlWmWminersWWminimallyWminorWWWWWWWWWWWWWWWWWWWWWWWWWW!W&W@WAWBWNWaWbWhWiWtWuWvWwWxWWWW"‚B‚CAKvvB+Valdez Group: Metavolcanic rocks, undividedCLate CretaceousATholeiitic metabasalt and basaltic metatuff, including local pillow lava, pillow breccia, and gabbroic dikes and sills. Metabasalt forms rugged, nearly massive outcrops, whereas semischistose metatuff forms more subdued outcrops. Variable metamorphic grades.GCV003H515ICordovaJ MetamorphicK2705‚DAKvgrBValdez Group: GreenstoneCLate CretaceousAThis unit consists of massive greenstone, metamorphosed pillow basalt, and mafic dikes exposed near the heads of Woodworth and Schwan Glaciers. Elsewhere in the Cordova and Valdez quadrangles, the unit includes lenticular bodies of chorite schist that may have originally typically metamorphosed to greenschist and low amphibolite facies. The higher grade facies is distinguished by the presence of dark-green hornblende.GCV002H611ICordovaJ MetamorphicK2705‚EAKvtBTuffCLate Cretaceous‚BB3een metamorphosed to amphibote-bearing greenschist.!F}K-Ar date on amphibote-bearing greenschist of 47.6 +/- 1.4 Ma was reported, those source rocks are now assigned to Orca GroupGCV002H554ICordovaJIgneousK27026WaquageneWarc-codeW4Warc-para1W4WarcsW4WareW0W1W@WAWZWaWdWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W WWWWWWWW!W#W$W%W(W.W/W0W7W9W:W;W<W=WEWFWHWIWLWMWPWjWlWmWnWoWpWqWrWsWtWuWxWWareaWWWWW WWcWareasWWWWWWWWWWWWWWWWWWWareascomposedofaboutequalamountsofpillowbasaltandiVVareasindriftrivervalleysubjectedtofloodscourordepoVareasofmudflowdepositsnoteasilyseparatableintotheyoVT0thisunitconsistsofmassivegreenstonemetamorphosedpilloDVthisunitiscomposedofapproximatelyequalamountsofinte@VBVtholeiiticWWCWtholeiiticmetabasaltandbasalticmetatuffincludinglocalCVthoughtBWTW0WtWuWthree(WHWIWxWthroughRWUWthroughoutWWWWnWoWthrust/Wti2WWti3aWti3bWtidalWW'W(W2W3W4W9W:WtidalsiltandbeachdepositsVVtideWtidewaterWWtightWtightlyWW$‚EDGreen to dark-gray fine-grained finely laminated tuff with plagioclase phenocrysts; metamorphosed to chlorite and biotite zones of greenschist facies; chlorite, epidote, and locally actinolite are abundant; remnants of glossy shards are present.GBS004H31I Blying SoundJIgneousK2706‚FAKvtBTuffCLate CretaceousDGreen to dark-gray fine-grained finely laminated tuff with plagioclase phenocrysts; metamorphosed to chlorite and biotite zones of greenschist facies; chlorite, epidote, and locally actinolite are abundant; remnants of glossy shards are present.GSR004H31ISewardJIgneousK2706‚GAKvuBValdez Group: Ultramafic rocksCLate CretaceousDDunite, locally with layers of chromite, moderately to mostly altered to serpentine, serpentine-talc, and talc schist; lustrous pale- to dark-green and black, locally reddish weathering rock that forms dike-like and irregularly shaped intrusive bodiesGSR004H39ISewardJIgneousK1375‚HAKvuBValdez Group: Ultramafic rocks munconsolidatedWWW$W)W*W,W2W3W4WWunconsolidateddepositsVunconsolidatedsurficialdepositsVVunderfitWundifferentiatedWWWFWIWMWWundifferentiatedsurficialdepositsVundividedWWWWWWWXWYW{WWWWWWWWWWWWWWWWWWWWWW)W,W5W9W:W;W<W=WCWyW|W~WWWunit6WunknownWvaldezWWWWWW W W"W$W%W(W7W8W9W:W;W<W=W@WAWBWCWDWGWHWIWLWMWNWOWPWvaldezgroup7V8Vvaldezgroupgabbro V"V$V%VvaldezgroupgneissOVvaldezgroupgreenstoneDVvaldezgroupinterbeddedmetavolcanicandmetasedimentaryroAV"&?‚HCLate CretaceousASerpentinized peridotite and dunite occur at three localities underlain by the Valdez Group: two of these are on the Resurrection Peninsula and the third is near the head of Port Fidalgo. On the Resurrection Peninsula small sparse inclusions of altered dunite are found in the gabbro unit. Blocks of serpentinite and serpentinized peridotite crop out within the interbedded volcanic and sedimentary rocks unit. Their strongly shared margins suggest that these rocks have been tectonically eBmplaced. The third outcrop of ultramafic rocks is northeast of the head of Port Fidalgo. This outcrop consists of both banded and massive dark- to light-green serpentized dunite and peridotiteGSR002H553ISewardJIgneousK1375‚IAKvuBValdez Group: Ultramafic rocksCLate Cretaceous&(‚I‚JAKvmBMelange of Iceworm PeakCLate CretaceousDTectonic melange consisting of blocks of graywacke in a phacoidally cleaved matrix of slate having a Valdez Group protolith for both matrix and blocks.GSV002H1071ISeldoviaJ TectoniteK2708‚KAKvmBMelange of Iceworm PeakCLate CretaceousDTectonic melange consisting of blocks of graywacke in a phacoidally cleaved matrix of slate having a Valdez Group protolith for both matrix and blocks.GKN003H3708IKenaiJ TectoniteK2708‚LAKvsBSchist, Valdez GroupCLate Cretaceous$%‚IASerpentinized peridotite and dunite occur at three localities underlain by the Valdez Group: two of these are on the Resurrection Peninsula and the third is near the head of Port Fidalgo. This description reflects the two localities on the Resurrection Peninsula. On the Resurrection Peninsula small sparse inclusions of altered dunite are found in the gabbro unit. Blocks of serpentinite and serpentinized peridotite crop out within the interbedded volcanic and sedimentary rocks unit. ThBTeir strongly shared margins suggest that these rocks have been tectonically emplacedBGCV002H553ICordovaJIgneousK1375(+‚L‚MAKvsBSchist, Valdez GroupCLate CretaceousASchistose, interbedded siltstone, graywacke, and less abundant tuff, tufaceous sandstone, and basalt (pillow basalt?); igneous rocks are typically dark green, metasiltstone is shiny steel gray, and metasandstone is dark gray; metamorphosed chiefly to biotite zone of greenschist facies, but locally to chlorite zone; typical metamorphic mineral assemblages of biotite zone are biotite-muscovite-chlorite-quartz-epidote-calcite-albite; actinolite is present in some metavolcanic rocks; chlorite B-zone assemplages are similar but lack biotiteGSR004H41ISewardJ MetamorphicK2710‚NAKvmBValdez Group: SchistCLate CretaceousAHomogenous pelitic schist and minor amphibolite; includes spotted biotite-plagioclase-quartz schist. Common banding probably represents original layering. Transitional into gneissose rocks to the east and into greenschist-facies rocks of metasedimentary rocks to the west.GCV003H600ICordova%']‚LASchistose, interbedded siltstone, graywacke, and less abundant tuff, tufaceous sandstone, and basalt (pillow basalt?); igneous rocks are typically dark green, metasiltstone is shiny steel gray, and metasandstone is dark gray; metamorphosed chiefly to biotite zone of greenschist facies, but locally to chlorite zone; typical metamorphic mineral assemblages of biotite zone are biotite-muscovite-chlorite-quartz-epidote-calcite-albite; actinolite is present in some metavolcanic rocks; chlorite B-zone assemplages are similar but lack biotiteGBS004H41I Blying SoundJ MetamorphicK2710;%schwanDWscourWWscouredWsea9W:WWWWseacoast0W1WseamletsvWwWsecondaryWWsectionWWWWrWsWsectionsWWWWsediment0W1WW@WBWsedimentaryWWWWWWWWWWWWWWWWWWWWWWWWW.W7W9W:W;W<W=W@WBWHWIWYWZWxW}WWWWWsedimentaryrocksundifferentiatedYVZVsedimentsCWDWvWxWWWW0Wsee0WseemWseen#W0WsegregationsPWRWUWsemi-anthraciteWsemi-consolidatedWsemiconsolidatedWWsemiconsolidatedcoal-bearingsiltsandandgravelVVsemischistose;W=WCW^ igneous܂؂ڂ݂ႁ₁낁삁킁  !"#$%&'()*456@BEFGHIXxz{|}~metamorphicقۂ78?YZ[\]^_`abcdefghijklmnopqrstuvw  !"#$%&'()*+,-./0123456789:;<'0‚NJ MetamorphicK2710‚OAKvgBValdez Group: GneissCLate CretaceousDMuscovite-biotite-quartz-plagioclase (+/- sillimanite and garnet) schist, banded gneiss, and migmatitic gneiss; many local intrusive stringers, dikes, and sills of granodiorite and granite. Transitional into schistose rocks to the north, south, and west.GCV003H609ICordovaJ MetamorphicK2715‚PAKvgBValdez Group: ParagneissCLate CretaceousAPredominantly metasedimentary rocks with well-developed gneissic foliation consisting of alternating quartz and feldspar-rich layers with biotite-rich layers. The paragneiss is brown weathering, medium grained, and banded on a 2 to 4 mm scale. However, thicker biotite-rich layers are also found. Quartz segregations parallel to the banding are common but not laterally continuous. Locally some layers in the paragneiss contain 1-in.-long porphyroblasts of andalusite. This unit contains ukvpkvs;<=LMkvtEFkvu(GHIkvvCkvvs@ABlalimeLlt!W"Wltgreen!V"Vmgmumznone炁orangeWpatternpinkRUqqa`qac qadqeoqes7qetqfqfl#qfsqftqglfBqgnikqgtV_qgtnU[qida4qifn3qifv2qilqkqkoqktql6qlbCDqlc qld?qlsqlv&qm$EWqmh\]qmiNQqnmqnkuwqnmyzqno|}qnsrsbiotite-plagioclaseNWbiotite-richPWbituminousWblackWWWWGW_W`WvWwWWblockWblocksWHWIWJWKWbluffWbluffs>WbluishrWsWblyingWWbodiesWWWW#W&WDWGWWW?sillsWWWWWWWWWWWWWW WCWOWsiltWWWWWWWWWWWWWWWW#W$W%W0W1W5W6W7W8W9W:W=WBWTWcWfWWWWsiltsandysiltandbogdepositsinterpretedfromairphotos%Vsilt-sizepWqWsiltite0WsiltstoneWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW+W-W.W/W0W9W:W@WBWLWMW[W\W]W^W_W`WaWbWdWeWfWgWhWiWjWkWlWmWnWoWpWqWrWsWtWuWvWwWWsiltstonelimestoneconcretionsandsandstonegVW7W;W<W=WJWKWslices2WslidesWWWslightlyW W'WslopeWW04‚P‚QAgreenBSchistC Cretaceous ?DUpper greenschist to amphibolite facies schist derived from metamorphism of interbedded graywacke and argillite of the Valdez GroupGCV005H507ICordovaJ MetamorphicK2715‚RApinkBTransitional gneissC Age not givenAUpper amphibolite facies schist and gneiss interlayered at scale of meters to centimeters. Top of unit marked by appearance of quartofeldspathic segregations in metapelite and base of unit marked by loss of stratal continuity through development of gneissic segregationsGCV005H508ICordovaJ MetamorphicK2715‚SAgrayBGneissC Age not givenD&Gray, banded quartzofeldspathic gneissGCV005H509ICordovaJ MetamorphicK2715‚TAgreenBSchistC Cretaceous ?DUpper greenschist to amphibolite facies schist derived from metamorphism of interbedded graywacke and argillite of the Valdez GroupGCV006H505ICordovaJ MetamorphicK2715‚UApinkBTransitional gneissC Age not given+/)‚PBp to 10 percent orthogneiss. The orthogneiss is cream colored or light gray, coarse grained, contains less biotite than the paragneiss, and locally grades into normal textured granitic rocks containing abundant inclusions of country rock.GCV002H610ICordovaJ MetamorphicK2715.feldspar-richPWfeldspathicWWWWjWfeldspatholithicWWW;W=WfelsicWWWWWWW W9W:WlWmWtWuWfelsiteWfelsiticpWqWfewWWWWWWWWW7W9W:W<WfWpWqWuppergreenschisttoamphibolitefaciesschistderivedfromQVTVupslopeTWupwardWuralitic!WusuallyWWWWWWWWWvaldezWW(WDWHWIWJWKWQWTWvalleyWWWWWWWWWWWWWWvalleysWCWDWWvariableWWWWWWW'W6WAWCWvariableproportionsofinterbeddedtholeiiticbasaltandtuVvariably<WWvariationsW W46‚U‚VAgrayBGneissC Age not givenD&Gray, banded quartzofeldspathic gneissGCV006H507ICordovaJ MetamorphicK2715‚WAorangeB OrthogneissC Age not givenDYMetamorphosed plutonic rocks. Mostly Ti2 plutons within the gneissic core of the complexGCV006H509ICordovaJ MetamorphicK2715‚XATgdBGranodioritic rocksCTertiaryDGranodiorite and quartz dioriteF6Age assigned revised based on Nelson and others (1983)GKN002H1350IKenaiJIgneousK2900‚YAJsBSedimentary rocksCJurassicD#Sedimentary rocks, undifferentiatedGSV005H5300ISeldoviaJ SedimentaryK3000‚ZAJsBSedimentary rocksCJurassicD#Sedimentary rocks, undifferentiatedGKN011H11300IKenaiJ SedimentaryK3000‚[AJnBNaknek FormationC)Late Jurassic (Oxfordian to Kimmeridgian)D5Arkose, conglomerate, sandstone, siltstone, and shaleELAmmonites and pelecypods, especially Buchia which provides tight age controlGSV002H47ISeldoviaJ SedimentaryK3010‚\AJnBNaknek FormationC Late Jurassic/3K‚UAUpper amphibolite facies schist and gneiss interlayered at scale of meters to centimeters. Top of unit marked by appearance of quartofeldspathic segregations in metapelite and base of unit marked by loss of stratal continuity through development of gneissic segregationsGCV006H506ICordovaJ MetamorphicK2715brubble WWWWWWSW&WruggedW WCWrustyrWsWtWuWrythmically7WrythmiteWWsaintWWWsalt5W8Wsaltmarshwell-stratifiedsiltandsmallpebblespoorlydra5V8VsameWWWsamples;W=WsandWWWWWWWWWWWWWWWWWWWWWWW#W$W'W(W)W*W+W,W-W.W/W0W1W2W3W7W<W=W>W@WAWBWTWWW39‚\D.Sandstone, arkose, conglomerate, and siltstoneGKN002H3010IKenaiJ SedimentaryK3010‚]AJnssB(Naknek Formation, lower sandstone memberC Late JurassicDoThin-bedded to massive arkosic sandstone, graywacke, and siltstone, mainly restricted to central part of regionGKN005H516IKenaiJ SedimentaryK3012‚^AJnssB(Naknek Formation, lower sandstone memberC Late JurassicDoThin-bedded to massive arkosic sandstone, graywacke, and siltstone, mainly restricted to central part of regionGSV004H516ISeldoviaJ SedimentaryK3012‚_AJnsB.Naknek Formation, Snug Harbor Siltstone MemberC Late JurassicDHMassive to thin-bedded dark-gray to black siltstone; laminated near baseGKN005H515IKenaiJ SedimentaryK3013‚`AJnsB.Naknek Formation, Snug Harbor Siltstone MemberC Late JurassicDHMassive to thin-bedded dark-gray to black siltstone; laminated near baseGSV004H515ISeldoviaJ SedimentaryK3013‚aAJnpB'Naknek Formation, Pomeroy Arkose MemberC Late Jurassic#togsWWtokunWWtonWWtonaliteWWWWWWWWWWWWWWtonaliteincludeshornblenditehornblende-biotitequartzdioVtonalitic WWWtonguesWtoo#WtopRWUWtopographicallyW Wjlatejurassicandorcretaceous/VlatejurassiccallovianfVlatejurassicoxfordiantokimmeridgian[VlatetriassicVVlithofaciesWmesozoicWWmiddleW3WjWkWlWmWnWoWpWqWrWsWtWuWvWwWoVpVqVrVsVtVuVmiddletolatejurassicbajociantocallovianjVmioceneWWWWWWWWWWWWWWWWWWWWWmioceneandoligoceneVmixedWnotRWSWUWVWWWoligoceneWWWWWWWWWWWWWWWW WWWWorWWW*W-W.W/Woxfordian[WpaleoceneWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WW!W#W&W'Wpermian,W6<b‚aDPMassive light-gray arkose and arkosic conglomerate; minor interbeds of siltstoneGKN005H514IKenaiJ SedimentaryK3014‚bAJnpB'Naknek Formation, Pomeroy Arkose MemberC Late JurassicDPMassive light-gray arkose and arkosic conglomerate; minor interbeds of siltstoneGSV004H514ISeldoviaJ SedimentaryK3014‚cAJncB,Naknek Formation, Chisik Conglomerate MemberC Late JurassicDfMassive cobble-boulder conglomerate, mainly restricted to area adjacent to Iniskin Bay and Tuxedni BayGKN005H517IKenaiJ SedimentaryK3016‚dAJcpB-Chinitna Formation, Paveloff Siltstone MemberC Late JurassicDMassive to thin-bedded gray arenaceous siltstone, weathers gray, large ellipsoidal concretions and lenticular beds of limestone, massive sandstone unit at baseGKN005H518IKenaiJ SedimentaryK3020‚eAJcpB-Chinitna Formation, Paveloff Siltstone MemberC Late JurassicCnaknekformationsnugharborsiltstonemember_V`Vnaptowne?WCWDWiWjWkWlWmWoWpWrWsWuWvWwWxWyWzWnatural&Wnaturalleveedeposits&VnewhalenqWnonmarine+Wnonvegetated*W3WnorthWofW W WWWWW?WCWDW^W`WjWlWmWoWpWrWsWuWvWwWxWyWzWWWWWWWWWWWWWWWWWWWW WWWJWKWWWWWWoffshore-WolderWWLWWWolderalluviumVVolderdriftriverdeltamudflowdepositsVolderglacialdepositsLVonNWQWWophioliteWW WophioliteofglacierislandpillowbasaltVophioliteofglacierislandsheeteddikes VmaterialWWW#W$W0W1W2W3W4W6WWWWWWWmatrixWWWWWWJWKWjWlWmWpWqWmatrix-supportedWWWWWWmaximumWmayWWWWWWWW$WPWWWWWWWWWWWWWDWpWqWWmchugh0W4WWWWWWmedialjWmediumWWWWWW W WWWWWWWWWW W!W"W$W%W'W/WPWlWmWpWqWWWmediumandcoarse-grainedbiotitegranodioriteVmediumandcoarse-grainedbiotitegranodioriteoftheaialikVmediumtocoarse-grainedpinktograygranitic-texturedquarVmediumtodark-grayfoliatedamdiumtocoarse-grainedbiotitVmediumtodark-grayfoliatedmediumtocoarse-grainedbiotitVmedium-grained WWWWWWWmedium-grainednonfoliatedtonaliteVV9@‚eDMassive to thin-bedded gray arenaceous siltstone, weathers gray, large ellipsoidal concretions and lenticular beds of limestone, massive sandstone unit at baseGSV004H518ISeldoviaJ SedimentaryK3020‚fAJcBChinitna FormationCLate Jurassic (Callovian)DPrimarily dark-gray to brown massive arenacous siltstone containing a few sandstone interbeds and numerous limestone concretions. Unit is subdivided into members, however not on this mapEAbundant fossils, including many species of ammonites: Cadoceras, C. stenocadoceras, C. pseudocadoceras, Kepplerites, Kheraiceras, Lilloettia, and Gowericeras. Also especially known for Iniskinites and ChinitnitesGSV002H32ISeldoviaJ SedimentaryK3025‚gAJcBChinitna FormationC Late JurassicD/Siltstone, limestone concretions, and sandstoneGKN002H3030IKenaiJ SedimentaryK3025‚hAJctB+Chinitna Formation, Tonnie Siltstone MemberC Late JurassicchisikcWcirqueZWcliff-head<Wcliff-headdunesand<Vcolluvial WWWcolluvialdepositsVcolluviumWWWcolluviumalluviumlacustrineandfloodplaindepositsVV=foraminiferaWWWforaminifersWWWWWWWWWWWforaminifersandmollusksVforaminifersglobigerinaorsubbotinaglobigerinaspgloboroVVVforaminifersprobablyglobigerinaorsubbotinaprobablytertVVformationvWwWformsrWsWfossilWfossiliferousjWlWmWrWsWtWuWvWwWfossiliferousthroughoutcontainingpelcypodsmeleagrinellatVuVfossilsfWvWwWfromrWsWvWwWfunkhouser+Wfusilinids,WgWWWWWWgastropodsWgeometricaWWglaciervWwWglobigerinaWWWWWglobogerinaWWWgloborotaliaWWWWWWgowericerasfWgrouprWsWhastataWWhighWWW.siltyWWWnWoWrWsWvWwWWsimilarWWWWW WLWMWpWqWsizeWslateWWWW#W7W;W<W=WJWKWyWslices2WWslidesWWWslightlyW W'WslopeWW<B‚hDMassive to thin-bedded brownish-gray arenaceous siltstone, weathers red-brown, small yellowish-brown limestone concretions in parallel bands, minor sandstone at baseGKN005H519IKenaiJ SedimentaryK3030‚iAJctB+Chinitna Formation, Tonnie Siltstone MemberC Late JurassicDMassive to thin-bedded brownish-gray arenaceous siltstone, weathers red-brown, small yellowish-brown limestone concretions in parallel bands, minor sandstone at baseGSV004H519ISeldoviaJ SedimentaryK3030‚jAJtuBTuxedni FormationC/Middle to Late Jurassic (Bajocian to Callovian)ALight- to dark-gray and green graywacke, conglomerate, siltstone, and shale. Graywacke ranges from feldspathic to lithic to laumontitic; conglomerate composed mainly of volcanic clasts in a graywacke matrix. Unit is subdivided into Formation, however not on this map. Formations are : Red Glacier, Fitz Creek Siltstone, Cynthia Falls Sandstone, Twist Creek Siltstone, and the Bowser FormationOr<wellWW=WWWWW WpWqW@D‚jEAbundantly fossiliferous, containing ammonites and pelecypods. Key ammonites include Erycites, Tmetoceras, Sonninia, Stemmatoceras, Emileia, Stephanoceras, Chondroceras, and many othersGSV002H50ISeldoviaJ SedimentaryK3180‚kAJtBTuxedni FormationCMiddle JurassicD*Sandstone, siltstone, and limy concretionsGKN002H3180IKenaiJ SedimentaryK3180‚lAJtbBTuxedni Group, Bowser FormationCMiddle and Late JurassicAHeterogeneous assemblage of sandstone, conglomerate, shale and siltstone characterized by rapid facies changes. Massive light- to dark-gray sandstone and conglomerate are the dominant lithologic types on the Iniskin Peninsula. The sandstone and the conglomerate matrix are coarse-grained and composed of angular fragments of feldspar and quartz, having biotite, augite, and magnetite as common accessory minerals. The light-gray sandstones are interbedded with the dark-gray sandstone and arEI=‚l‚mAJtbBTuxedni Group, Bowser FormationCMiddle and Late JurassicAHeterogeneous assemblage of sandstone, conglomerate, shale and siltstone characterized by rapid facies changes. Massive light- to dark-gray sandstone and conglomerate are the dominant lithologic types on the Iniskin Peninsula. The sandstone and the conglomerate matrix are coarse-grained and composed of angular fragments of feldspar and quartz, having biotite, augite, and magnetite as common accessory minerals. The light-gray sandstones are interbedded with the dark-gray sandstone and arBE‚lBe commonly calcareous and contain numerous coquina beds composed almost entirely of the pelecypods Inoceramus and Trigonia. Clasts in the conglomerate are dominantly felsic volcanic rocks and basalt, but include about 10 percent granitic rocks. Siltstone as much as 100-m-thick occurs with the conglomerate and sandstone and north of Chinitna Bay occurs in units as much as 250-m-thick, where it forms the dominant unit in the Bowser Formation. The siltstone is massive to thin-bedded, mediuCm- to coarse-grained, dark-brownish gray, weathering to light-brown. Lenticular limestone concretions containing ammonites are common north of Chinitna Bay. The Formation ranges in overall thickness from 380 to 560 mDCG‚lAAbundantly fossiliferous, containing ammonites and pelecypods, the units can be divided into two faunal zones which correspond to the break between the Middle and Upper Jurassic. The lower faunal zone immediately overlies the unconformity with the Twist Creek Siltstone and contains the ammonites Cranocephalites, Arctocephalites, Siemiradzkia, Cobbanites, and Parareineckia and is of middle Bathonian in age. The upper faunal zone contains the ammonites Xenocephalites, Kheraiceras, and KeppBlerites of late Bathonian age GKN005H520IKenaiJ SedimentaryK3181gtight[WtmetocerasjWvWwWto3WlWmWvWwWtopvWwWtriaconthaWWtriassic3WWtrigoniatWuWvWwWtrinacriaWWtuxedinirWsWtwistlWmWtwolWmWvWwWulrichi;W=WunconformitylWmWunderlying2WunitrWsWvWwWunitslWmWupperlWmWvWwWuppermostvWwWwashingtonianaWWWwellpWqWwhererWsWwhich[WlWmWnWoWwitchelliatWuW΂܂䂁$bs004₁'ʂ˂؂ق 9ELcv002ꂁÂȂтႁ₁炁ꂁ(=BDIPcv003邁 -6=OW‚ɂЂ߂悁'^cv005낁!XQRScv006삁"LYTUVWkn002ł *X\gkkn003ႁER-8Kkn005 +5NUVci낂]_acdhlnprt[canlWmWcfWWWWWchert2W3WchinitnitesfWchondrocerasjWpWqWrWsWcited+WcobbaniteslWmWcommonrWsWconcentrica;W=Wconodonts,WconstrictaWWcontainingjWlWmWtWuWcontainslWmWcontrol[WcorbisemaWWcorrespondlWmWcrabWWWcrabbranchioplaxwashingtonianapelecypodaciladecisaVVVJM‚m‚nAJttB$Tuxedni Group, Twist Creek SiltstoneCMiddle JurassicACSoft, poorly consolidated, thin-bedded to massive siltstone and silty shale as much 125-m-thick. The siltstone is dark-gray, weathering to dark-rusty brown and contains many thin beds of volcanic ash that weather a bright orange color. Small limestone concretions commonly fossiliferous and are common throughout the unitCEAbundant ammonite fauna which includes Oppelia (Liroxyites), Megasphaerceras, Leptoshinctes, Lissoceras, and Normannites (Dettermanites)GKN005H521IKenaiJ SedimentaryK3182‚oAJttB$Tuxedni Group, Twist Creek SiltstoneCMiddle JurassicACSoft, poorly consolidated, thin-bedded to massive siltstone and silty shale as much 125-m-thick. The siltstone is dark-gray, weathering to dark-rusty brown and contains many thin beds of volcanic ash that weather a bright orange color. Small limestone concretions commonly fossiliferous and are common throughout the unitCCJ‚mBe commonly calcareous and contain numerous coquina beds composed almost entirely of the pelecypods Inoceramus and Trigonia. Clasts in the conglomerate are dominantly felsic volcanic rocks and basalt, but include about 10 percent granitic rocks. Siltstone as much as 100-m-thick occurs with the conglomerate and sandstone and north of Chinitna Bay occurs in units as much as 250-m-thick, where it forms the dominant unit in the Bowser Formation. The siltstone is massive to thin-bedded, mediuCm- to coarse-grained, dark-brownish gray, weathering to light-brown. Lenticular limestone concretions containing ammonites are common north of Chinitna Bay. The Formation ranges in overall thickness from 380 to 560 mIHJ‚mAAbundantly fossiliferous, containing ammonites and pelecypods, the units can be divided into two faunal zones which correspond to the break between the Middle and Upper Jurassic. The lower faunal zone immediately overlies the unconformity with the Twist Creek Siltstone and contains the ammonites Cranocephalites, Arctocephalites, Siemiradzkia, Cobbanites, and Parareineckia and is of middle Bathonian in age. The upper faunal zone contains the ammonites Xenocephalites, Kheraiceras, and KeppBlerites of late Bathonian age GSV004H520ISeldoviaJ SedimentaryK3181^sole7WsolifluctionWTWsolifluctionmantleinterpretedfromairphotosthoughttobeTVsomeWWWWWWW7WWWWWWWWWWWWW/W7W9W:WLWMWPW|W~WWsometimes WsomewhatWsortedWWW/W=WOWTWWWWpWqWsoundWWWsourceWWsourcesTWsouthWWWWWW WOWsouthernWsouthernmostWsouthwestWWsouthwesternWWWspWWsparseHWIWspatially&WspecialWspheroidalWspit-building0W1WspitsWWWW'W(W-Wspotted/WNWspreadingWWWspruceVW_WiWkWstacksWWstadeUWVW[W_WnWstand9W:Wstarts WsteelLWMWelissocerasnWoWtWuWvWwWlocallytWuWlowerlWmWrWsWvWwWmvWwWmaestrichtian7W9W:Wmaestrichtianandcampanianinoceramus7Vmagoon+WmanyfWjWrWsWmegasphaercerasnWoWmeleagrinellatWuWvWwWmetersvWwWmiddlelWmWmollusc9W:Wmolluscinoceramuskusiroensismaestrichtianlatecretaceou9V:VmollusksWWWWWWWmollusksandforaminiferaVVVmollusksforaminifersVmorerWsWmostvWwWmtchedlishvili+WmytiluspWqWnavoculopgisWWnovWwWnon-diagnosticrWsWnorianWnormannitesnWoWrWsWnot+Wnotinbradleybutcitedinmagoonandothers1980sporomorp+VHQ‚oEAbundant ammonite fauna which includes Oppelia (Liroxyites), Megasphaerceras, Leptoshinctes, Lissoceras, and Normannites (Dettermanites)GSV004H521ISeldoviaJ SedimentaryK3182‚pAJtcB&Tuxedni Group, Cynthia Falls SandstoneCMiddle JurassicAMassive to thick-bedded graywacke sandstone and pebble conglomerate about 200-m-thick. The sandstone is medium- to coarse-grained, greenish-gray to dark-green, weathering mottled light-gray due to zeolites and has graded bedding. The sandstone consists mainly of angular fragments of feldspar and volcanic rocks in a compositionally similar silt-size matrix. The pebble conglomerate occurs in thin lenticular beds within the sandstone and is well sorted within individual beds. Clasts consithecentralpartoftheplutonsaredominantlylight-grayme Vthedominantlithologyisdenseharddark-graysiltstonewheVtheirHWIWuA,weathersdWeWhWiWrWsWQT‚p‚qAJtcB&Tuxedni Group, Cynthia Falls SandstoneCMiddle JurassicAMassive to thick-bedded graywacke sandstone and pebble conglomerate about 200-m-thick. The sandstone is medium- to coarse-grained, greenish-gray to dark-green, weathering mottled light-gray due to zeolites and has graded bedding. The sandstone consists mainly of angular fragments of feldspar and volcanic rocks in a compositionally similar silt-size matrix. The pebble conglomerate occurs in thin lenticular beds within the sandstone and is well sorted within individual beds. Clasts consiBist of "red and green felsitic volcanic rocks, aphanitic igneous rocks, and a few metasedimentary rocks that are primarily dark-gray quartzite" (Detterman and Hartsock, 1966, p. 32). Coarse-grained siltstone is interbedded with the sandstone and the siltstone may contain a few limestone concretions. The siltstone may make up 10 to 15 percent of the formationWMP$‚pBist of "red and green felsitic volcanic rocks, aphanitic igneous rocks, and a few metasedimentary rocks that are primarily dark-gray quartzite" (Detterman and Hartsock, 1966, p. 32). Coarse-grained siltstone is interbedded with the sandstone and the siltstone may contain a few limestone concretions. The siltstone may make up 10 to 15 percent of the formationWEThe sparse fauna includes the ammonites Chondroceras and Stephanoceras as well as the pelecypods Inoceramus sp. and Mytilus sp.GKN005H522IKenaiJ SedimentaryK3183{w‚pP‚qET‚rAZY‚sA]\‚tE_‚uBcb‚vAih‚wAon‚{Ds‚Cw‚Dx‚J{‚A~‚Dw25WWWWvWwW250-m-thicklWmW3WW W W3-40W30WWWWW300W300-700WWW312WW32pWqW34-maW35WWW3500W3500-year-oldW380lWmW4PW409W:WtWuWvWwW45WW4918W5WWWWWWWWWWW!W4W50W4W500-ftvWxW560lWmW6`WmWoWpWrWsWuWwWyWzWW W60W65-ft-wide$W%W650&W7.57WW75WWW750WW8WWW W80 WPZ‚qEThe sparse fauna includes the ammonites Chondroceras and Stephanoceras as well as the pelecypods Inoceramus sp. and Mytilus sp.GSV004H522ISeldoviaJ SedimentaryK3183‚rAJtfB#Tuxedni Group, Fitz Creek SiltstoneCMiddle JurassicAThick sequence of massive, bluish dark-gray, arenaceous coarse- to fine-grained siltstone that commonly weathers rusty orange and contains many small limestone concretions. Interbedded are fine-grained sandstone and, locally, conglomerate interbeds. In the upper part of the unit the siltstone could possibly be called a silty shale. The unit is coarsest in the vicinity of Gaikema Creek and rapidly becomes finer-grained in all directions away from the Gaikema Creek sectionq@+isqWrWsWtWuWvWwWuvolcanicavalanchedepositsconsistingofpoorlysortedmixtVvolcanicbrecciatuffagglomerateandaphaniticlavaflowsazVvolcanicflowstuffsandbrecciasmetamorphicequivalentsan{Vvolcanicrockslocallyincludessedimentaryrocks}VanicrocksofiliamnaandredoubtvolcanoesVvolcanicrocksofredoubtvolcanoVvolcaniclasticWWWWWvolcanicsWWvolcanismWWvolcanoWWWWWWWvolcanoesWWWvolcanogenicWwallsWwasWW$W%W9W:WwaterWwave-deposited0W1Wwave-depositedcoarse-grainedmaterialanddriftwoodalongs0V1VweaklyWWWW-W0W;W=WyWweaklymetamorphosedsiltstonegraywackearkoseandconglome-VweaklymetamorphosedslateandgraywackelocallyincludesvoyVweather&W@WBWnWoWweatherediWkWweatheringW WWGWPWlWmWnWoWpWqWtWuWvWwWtYyvolcanicavalanchedepositsconsistingofpoorlysortedmixt@Vvolcanicrocksofiliamnaandredoubtvolcanoes@uweathers@Owell@Awell-developed@rwind@1980@aquilapollenites@mbrachiopods@[can@Gcrabs@foraminifera@>hispid@lissoceras@Lnucleopygus@epermian@Xsp@tight@Fwith@gkn006@kn007@ kn012@y‚A@|ÃQ`@Ãc@tÃ`@Ã@ÄRQ@: blyingsound@kenai6 middleton@sound@* tectonite@^unconsolidated= eApermian,Wpermianconodontsandfusilinids,VpileclusWWplanktonicWplanktonicforaminifersfossilcrabspelecypodsandgastropoVplantsWplantsandmollusksVpleuromyarWsWvWwWpliensbachian2Wpliensbachianradiolariainunderlyingribbonchert2VpollenWWWpollenalnusalderforaminifersglobogerinaspgsennigloboVVVpoorlyWWpresentrWsWpreservedWWprobablyWWproteacidites+Wprovides[WpseudocadocerasfWpseudoliocerasvWwWradiolaria2W3WredvWwWreticulatus+Wribbon2WrocksrWsWsenniWWWWWWsiemiradzkialWmWsilicoflagellatesWWsiltstonelWmWskirrocerasvWwWsoniniavWwWsonniniajWtWuWZ]3‚r‚sAJtfB#Tuxedni Group, Fitz Creek SiltstoneCMiddle JurassicAThick sequence of massive, bluish dark-gray, arenaceous coarse- to fine-grained siltstone that commonly weathers rusty orange and contains many small limestone concretions. Interbedded are fine-grained sandstone and, locally, conglomerate interbeds. In the upper part of the unit the siltstone could possibly be called a silty shale. The unit is coarsest in the vicinity of Gaikema Creek and rapidly becomes finer-grained in all directions away from the Gaikema Creek sectionTY=‚rAThis unit is abundantly fossiliferous and is the first unit of the Tuxedini Group where ammonites are more numerous than pelecypods. A few non-diagnostic brachiopods are also present. The ammonites include Normannites, Teloceras, and Chondroceras and many other species, pelecypods include Inoceramus and Pleuromya, both forms distinctly different than lower part of the Tuxedini Group. The Inoceramus is specifically identified as I. ambiguous Eichwald, different from the common InoceramusB of the older rocksGKN005H523IKenaiJ SedimentaryK3184mGbrachiopodsrWsWbradley+WbranchioplaxWWWbreaklWmWbuchia[Wbut+WcfWcadocerasfWcampanian7WcamptonectesvWwW]_‚s‚tAJtgB Tuxedni Group, Gaikema SandstoneCMiddle JurassicAResistant, cliff-forming, massive to thin-bedded graywacke sandstone and cobble conglomerate showing graded bedding. Conglomerate is confined to the Iniskin Peninsula, clasts in it consist of red and green felsic volcanic rocks, aphanitic igneous rocks and minor metasedimentary rocks, all thought to be derived from the Talkeetna Formation. Rare granitic clasts are the first appearance in the Middle Jurassic of rocks presumably derived from the Alaska-Aleutian Range batholith. Locally, tB~hin-bedded to massive, generally coarse grained to sandy, gray to olive-gray, brownish to rusty brown weathering siltstone is as much as 40 percent of the formation, however, it constitutes generally less than 10 percent of the unit, occurring mainly as thin interbeds in sandstone. Siltstone apparently does not occur in close proximity to the conglomeratic parts of the formationlY\@‚sAThis unit is abundantly fossiliferous and is the first unit of the Tuxedini Group where ammonites are more numerous than pelecypods. A few non-diagnostic brachiopods are also present. The ammonites include Normannites, Teloceras, and Chondroceras and many other species, pelecypods include Inoceramus and Pleuromya, both forms distinctly different than lower part of the Tuxedini Group. The Inoceramus is specifically identified as I. ambiguous Eichwald, different from the common InoceramusB of the older rocksGSV004H523ISeldoviaJ SedimentaryK3184*P tectonite,-/013JKunconsolidated߂ႀ₀む䂀傀悀炀肀邀ꂀ낀삀킀  !"#$%&'()*+,-./0123456789:;<\c‚tEFossiliferous throughout, containing pelcypods Meleagrinella, Trigonia, and Inoceramus and ammonites Witchellia(?), Stephanceras and locally, Sonninia (Papilliceras), Lissoceras, and EmileiaGKN005H524IKenaiJ SedimentaryK3185‚uAJtgB Tuxedni Group, Gaikema SandstoneCMiddle JurassicAResistant, cliff-forming, massive to thin-bedded graywacke sandstone and cobble conglomerate showing graded bedding. Conglomerate is confined to the Iniskin Peninsula, clasts in it consist of red and green felsic volcanic rocks, aphanitic igneous rocks and minor metasedimentary rocks, all thought to be derived from the Talkeetna Formation. Rare granitic clasts are the first appearance in the Middle Jurassic of rocks presumably derived from the Alaska-Aleutian Range batholith. Locally, tNconfluence>WconglomerateWWWWWWWWWWWWWWWWWWW+W,W2W;W=W[W\WaWbWcWjWlWmWpWqWrWsWtWuWconglomerateandsubordinatesandstonesiltstoneandcoalVconglomeratesandstoneandsiltstonemostlytuffaceousVconglomeratesandstoneandsiltstonemostlytuffaceousinferVconglomeratesWWWWWWconglomeraticW-W.W/W0W9W:WtWuWcongloverate9W:WconsideredWWconsist2W3WFWIWWWWWW<WpWqWtWuWSb|restWrestrictedWWW]W^WcWresurrectionWW W$W%W(W@WBWHWIWretreatWWWWWWWreworkedWWrhyoliteWrhythmically<WricciWWrich6WWWridgeW Wridge-forming/Wridges'W(W+W.W=WWrippleWWWriverWWWWWWW0W1W>WWWWWWWWWW/WriversW>WrockWWW WWWWWWRWSW^WWWWWWWWWWWWW'W/W9W:WGWPWWciG‚u‚vAJtrB$Tuxedni Group, Red Glacier FormationCMiddle JurassicAThin-bedded to massive, red-brown weathering dark-gray to moderate olive-gray siltstone concentrated in the upper part of the unit and consisting of about 40 percent of the Formation. The siltstone is highly arenaceous and locally contains lenticular interbeds and concretions of reddish-gray, dense limestone and very minor coal seamlets. Underlying this is light-tan to buff arkosic sandstone making up about 25 percent of the unit and a thick black, silty to arenaceous, very fissile, shalBe_b{‚uB~hin-bedded to massive, generally coarse grained to sandy, gray to olive-gray, brownish to rusty brown weathering siltstone is as much as 40 percent of the formation, however, it constitutes generally less than 10 percent of the unit, occurring mainly as thin interbeds in sandstone. Siltstone apparently does not occur in close proximity to the conglomeratic parts of the formationlEFossiliferous throughout, containing pelcypods Meleagrinella, Trigonia, and Inoceramus and ammonites Witchellia(?), Stephanceras and locally, Sonninia (Papilliceras), Lissoceras, and EmileiaGSV004H524ISeldoviaJ SedimentaryK3185Kgreenmassivemediumtocoarse-grainedandlocallypegmatiti V"Vgreentodark-grayfine-grainedfinelylaminatedtuffwithpEVFVgreenish-grayWWWWWWpWqWgreenschistWW9W:W<W@WBWDWEWFWLWMWQWTWgreenschist-faciesNWgreenstoneWWWWWWWW-WDWWgreenstones0WgreyWgrooveWWWgroundWWWWWW^WlWgroundmassWWgroupWWWWWWWWWWW WWW W!W"W#W&W(WHWIWJWKWQWTWhadWhanging?Whangingdeltaiccomplexesassociatedwithoneormorestrand?Vharbor$W%WhardWWWWWWWWhardingWWhartsockpWqWhasWWWWW$W%W/W;W=W@WBWpWqW4describedWWWdescribedbywinklerandplafker1981p18asfollowsapromVdescriptionWW(W0WIWdescriptionfromclark1981p3-4themchughcomplexisahe0VdetailWW0Wdetermined WdettermanpWqWyWdeuteric6Wdeveloped;W=WdevelopmentRWUWdiabaseWW'WdiabasicWWWW W WdiameterWWdiamictiteWWdiamictonWW^WWWdiatomsWWdiffer@WBWdifferencesWWWdifferingW WdikeWW4Wdike-likeGWdikesWWWWWWWWWWWWWWWWWWW W W WW#W$W%W&WCWDWOWWW,brown-coloredWWWbrown-weatheringWbrownishtWuWbrownish-grayhWiWbrushVW_WiWkWbuffW WvWwWbutW$WWWWWWWWWWWW WWWWWWW7WLWMWPWlWmWxWWFwithlWmWwodehouseia+WxenocephaliteslWmWzonelWmWvWwWzoneslWmWbs002䂁΂܂䂁$bs004₁'ʂ˂؂ق 9ELcv002ꂁÂȂтႁ₁炁ꂁ(=BDIPcv003邁 -6=OW‚ɂЂ߂悁'^cv005낁!XQRScv006삁"LYTUVWkn002ł *X\gkyzkn003ႁER-8Kkn005 +5NUVci낂]_acdhlnprtv|ioG‚v‚wAJtrB$Tuxedni Group, Red Glacier FormationCMiddle JurassicAThin-bedded to massive, red-brown weathering dark-gray to moderate olive-gray siltstone concentrated in the upper part of the unit and consisting of about 40 percent of the Formation. The siltstone is highly arenaceous and locally contains lenticular interbeds and concretions of reddish-gray, dense limestone and very minor coal seamlets. Underlying this is light-tan to buff arkosic sandstone making up about 25 percent of the unit and a thick black, silty to arenaceous, very fissile, shalBebh‚vAThe Red Glacier Formation is most abundantly fossiliferous in its upper parts, no fossils are known from the lower 2000 feet of the unit. Pelcypods include Meleagrinella, Trigonia, Inoceramus, Camptonectes, and Pleuromya. Ammonites occur in two distinct faunal assemblages. The lower assemblage includes Erycites, Tmetoceras, and Pseudolioceras and this faunal zone from 450 to 1,400 m below the top of the formation. The upper assemblage is in the upper 400 m of the formation and includesB Soninia, Emiliea, Parabigottes and in the uppermost 150 meters, also includes Papilliceras, Strigoceras, Lissoceras, Stephanoceras, Stemmatoceras, and SkirrocerasGKN005H525IKenaiJ SedimentaryK318684middleandlatejurassiclVmVmiddlejurassickVnVoVpVqVrVsVtVuVvVwVmiddletolatejurassicbajociantocallovianjVmioceneWWWWWWWWWWWWWWWWWWWWWmioceneandoligoceneVmixedWnotRWSWUWVWWWoligoceneWWWWWWWWWWWWWWWW WWWWorWWW*W-W.W/WyWWoxfordian[WpaleoceneWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WW!W#W&W'Wpermian,Wmiddleandlatejurassic@jpleistocene@quaternary@"!quaternaryholocene@quaternarypleistocene@quaternarytertiarytojurrassic@tertiaryandcretaceous@tertiarymiddletolate@to@E1000@15@25@S800@about@action@lallotriomorphic-gran@alluvial-colluvial@an@7and@andesite@angular@aquagene@ areasofmudflowdepositstendingtobeminimallyvegetated@6ash@limitedWlimykWline$W%WlineatedWWlinesWWlithic;W=WjWlithic-rich;W=WlithifiedWWlithofaciesWWlithologicWlWmWlithologicallyWlithologiesWWWWWWW,WlithologyWWlittlemWoWpWrWsWuWwWyWzWloadWWWWlocalWHWKWTW^WWWWWWWWW'WCWOWlocalities(WHWIWlocalizedW[aquilapollenites+WarachinodiscusWWarctocephaliteslWmWarerWsWvWwWaspWqWrWsWasperaWWassemblagevWwWassemblagesvWwWbalmeisporites+WbathonianlWmWbelWmWbedded3WbelowvWwWbertillonites+WbetweenlWmWbivalvesWbivalvesoflatetriassicnorianageVbothrWsWos‚w‚xAJtBTalkeetna FormationC'Early Jurassic (Hettangian to Toarcian)AMainly volcanic breccia, agglomerate, lava flows, and tuff. Sedimentary rocks locally interbedded but are minor. Informally divided into three members, which correlate with formal members elsewhere. Includes informally named Pogibshi Formation on east side of Cook InletGSV002H67ISeldoviaJIgneousK3250‚yAKJuB!Metasedimentary rocks (undivided)CCretaceous and (or) JurassicDWeakly metamorphosed slate and graywacke; locally includes volcanic and intrusive rocks, undivided. Consists of contact metamorposed Talkeetna Formation according to Detterman and others (1976, KN010).GKN002H2825IKenaiJ MetamorphicK3250MHFS‚zAJtkBTalkeetna FormationCEarly JurassicD}Volcanic breccia, tuff, agglomerate, and aphanitic lava flows; as mapped, locally includes Kamishak Formation in Ilianna QuadGKN002H3250IKenaiJIgneousK3250‚{AbpTBJurassic bedrockCJurassichn‚wAThe Red Glacier Formation is most abundantly fossiliferous in its upper parts, no fossils are known from the lower 2000 feet of the unit. Pelcypods include Meleagrinella, Trigonia, Inoceramus, Camptonectes, and Pleuromya. Ammonites occur in two distinct faunal assemblages. The lower assemblage includes Erycites, Tmetoceras, and Pseudolioceras and this faunal zone from 450 to 1,400 m below the top of the formation. The upper assemblage is in the upper 400 m of the formation and includesB Soninia, Emiliea, Parabigottes and in the uppermost 150 meters, also includes Papilliceras, Strigoceras, Lissoceras, Stephanoceras, Stemmatoceras, and SkirrocerasGSV004H525ISeldoviaJ SedimentaryK3186~massiveclast-supportedwell-roundedpebblecobbleandbouldVmassivecobble-boulderconglomeratemainlyrestrictedtoarecVmassivegreenvolcanicbreccialavaflowsinpartofsubmariVmassivelight-grayarkoseandarkosicconglomerateminorintaVbVmassivepinkagglomerateandsomevolcanicbrecciaminorandVmassivetothick-beddedgraywackesandstoneandpebbleconglpVqVmassivetothin-beddedbrownish-grayarenaceoussiltstonewehViVMU}intrudeWWW W$W%WintrudedWW W$W%WintrudesW#Wintruding#W4WintrusionsWWintrusiveW#WGWOWyWinwardWirregularWWWWWirregularlyGWisWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW W W WWW W!W"W&W'W(W/W0W7W9W:W@WBWDWHWIWLWMWPWfWjWlWmWnWoWpW_d`correlatedWcouldWrWsWcountryW'WPWcoveWcoverWcoverageW4WcoveredBWVW_WiWkWWWcreamPWcreatingWWcreekW@WAWaWdWWWWWWWjWrWsWcrescentWWWcresecentWcrestW WcropHWIWcrops#Wcross;W=Wcross-beddingWcross-cuttingW Wcross-lamination7WcrossbeddingWWWcrowe WcrudelyWcrust0Wcrystals!Wcurrent-ripple7WcurrentsWWWcutWcynthiajWdWd2WWnw‚{DtVolcanic flows, tuffs, and breccias, metamorphic equivalents, and granodiorite. Talkeetna Formation and other unitsGKN006H622IKenaiJIgneousK3250‚|AJtkuBTalkeetna Formation, undividedCEarly JurassicD9Tuff, sandstone, agglomerate, breccia and some lava flowsGKN005H529IKenaiJIgneousK3250‚}AJvBVolcanic rocksCJurassicD2Volcanic rocks, locally includes sedimentary rocksGKN009H904IKenaiJIgneousK3250‚~AJtkuBTalkeetna Formation, undividedCEarly JurassicD9Tuff, sandstone, agglomerate, breccia and some lava flowsGSV004H529ISeldoviaJIgneousK3250‚AMzBMetamorphic rocksCMesozoicDLSchist, hornfels, and amphibolite, contact metamorphosed Talkeetna FormationGKN010H1010IKenaiJ MetamorphicK3250MHFS‚AsvBSedimentary and volcanic rocksCCenozoic and MesozoicDfCheifly Jurassic volcanic rocks; locally includes Mesozoic and Cenozoic sedimentary and volcanic rocksGKN012H1206IKenaiJ SedimentaryK3250‚AJtkhB.Talkeetna Formation, Horn Mountain Tuff MemberÃc|~ÃdÃd0Ãd@ÃdPÃdÃeÃf@HIÃfP@BÃf`AÃqFNÃq GÃq0HÃq@@ÃqPaÃq`bÃqpÃqÃqÃqOÃr PÃr DÃr0Ãr@  ÃrP$$%Ãr`Ãrp)Ãr*Ãr2Ãr3Ãs4Ãs Ãs0{Ãs@ÃsPJÃs`IÃspÃsKÃsdÃs,ÃtÃt Ãt0AÃt@ÃtPÃt`Ãv0à Ã0Ã@0ÃPVOvolcanicrocksofiliamnaandredoubtvolcanoesVvolcanicrocksofredoubtvolcanoVvolcaniclasticWWWWWvolcanicsWWvolcanismWWvolcanoWWWWWWWvolcanoesWWWvolcanogenicWwallsWwasWW$W%W9W:WwaterWwave-deposited0W1Wwave-depositedcoarse-grainedmaterialanddriftwoodalongs0V1VweaklyWWWW-W0W;W=WyWweaklymetamorphosedsiltstonegraywackearkoseandconglome-VweaklymetamorphosedslateandgraywackelocallyincludesvoyVweather&W@WBWnWoWweatherediWkWweatheringW WWGWPWlWmWnWoWpWqWtWuWvWwWNcheiflyjurassicvolcanicrockslocallyincludesmesozoicanVchemistry WchertWW,W.W/W3W@WBWWWchevronWWchieflyWWWW#WSWWWWWWWW W!W"WLWMWWchieflyrubblegravelsandsiltandclaymostextensiveinjVsx‚CEarly JurassicD]Mottled andesitic tuff, tuffaceous sandstone, and siltstone, locally contains andesitic flowsGKN005H526IKenaiJ SedimentaryK3251‚AJtkpB5Talkeetna Formation, Portage Creek Agglomerate MemberCEarly JurassicDgMassive pink agglomerate and some volcanic breccia; minor andesitic flows, locally metasedimentary rockGKN005H527IKenaiJIgneousK3252‚AJtkmB/Talkeetna Formation, Marsh Creek Breccia MemberCEarly JurassicDMassive green volcanic breccia, lava flows, in part of submarine origin, interbedded with argillite and meta tuff, low rank metamorphism mainly confined to lower partGKN005H528IKenaiJIgneousK3253‚A Jt (east)B(Talkeetna Formation (Pogibshi Formation)C'Early Jurassic (Hettangian to Toarcian)DMainly volcanic breccia, agglomerate, lava flows, and tuff. Sedimentary rocks locally interbedded but are minor. Informally named Pogibshi Formation on east side of Cook InletGSV002H67ISeldoviaJIgneousK3265‚AJthB TrondjemiteCJurassicw{‚D TrondjemiteGKN012H1204IKenaiJIgneousK3380‚AJgBGranitic rocksCJurassicD5Granitic rocks of the Alaska-Aleutian Range batholithGKN011H11340IKenaiJIgneousK3400‚AJgdBQuartz monzoniteCJurassicDQuartz monzoniteGKN002H3402IKenaiJIgneousK3402‚AJqmBQuartz monzoniteCJurassicDJMedium- to coarse-grained pink to gray granitic-textured quartz monzonite GKN005H532IKenaiJIgneousK3402‚AJqdB)Quartz diorite, diorite, and granodioriteCJurassicD)Quartz diorite, diorite, and granodioriteGKN002H3403IKenaiJIgneousK3403‚AJdBDiorite of Point BedeC Jurassic(?)D3Fine- to medium-grained nonfoliated quartz diorite.GSV002H111ISeldoviaJIgneousK3404‚AJtoBTonalite of Dogfish BayC Jurassic(?)D$Medium-grained nonfoliated tonalite.GSV002H116ISeldoviaJIgneousK3404‚AJqdBQuartz dioriteCJurassicD*Mainly biotite-hornblende-quartz dioriite GKN005H533IKenaiJIgneousK3404‚AdiBQuartz diroite dikesCJurassicDQuartz diorite dikesGKN005H537IKenai |Fkn012)kn0139kn014kn015mi002傁邁킁mi003sr002悁ς݂ނ傁 #%&0;@Hsr004め(̂͂ڂۂ !"./:FGMsr005҂ӂԂՂւׂめ肂 sv002߂Ă삂+,2347J[fjxsv004.8Q[_fkƂ^`beimoqsuw~sv005]Ysv007 :Dhpswxz}?sv008sv009sv010삂4 '(@₀` ‚!‚"‚$ʂ‚&˂‚(‚*؂‚1‚2‚4ق‚6!‚8‚:9:]quartzmonzoniteVVquaternaryWWWquaternarysurficialdepositsVquaternaryvolcanicrocksVVramparts WrecentWW!W"Wrecentglacio-fluvialdepositsVVrecentlacustrinedeposits!V"VredvWwWredoubtWWWWredwoodWWredwoodformationVVregionWWridges+W.WriverWWWWWWrockWSWrockavalanchedepositsVrockglaciersSVrocksWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WW&W'W(W)W+W1W5W6W9W:W;W<W=W>W?W@WAWBWCWGWHWIWXWYWZWyW}WWWWWWWx~‚JIgneousK3404‚AJuBPlutonic rocks, undividedCJurassicDW?WquiteWWW6Wngenerally`WWWWWWWWWWW WWWW7W<WtWuW{‚ATrkBKamishak FormationC Late TriassicD0Limestone, grey to black chert, and porcellaniteGKN002H4020IKenaiJ SedimentaryK4020‚AJ(?)fBFelsiteC Jurassic(?) or early Tertiary(?)D*Fine-grained aphanitic, light gray felsiteGSV002H115ISeldoviaJIgneousK4310‚AJdBDiorite of Point BedeC Jurassic(?)D3Fine- to medium-grained nonfoliated quartz diorite.F-Newly determined zircon age of approx. 206 MaGSV008H111ISeldoviaJIgneousK4310‚AJtoBTonalite of Dogfish BayC Jurassic(?)D$Medium-grained nonfoliated tonalite.FOAssigned new nsaclass based on date of Diorite of Point Bede by Dwight Bradley.GSV008H116ISeldoviaJIgneousK4310‚AMgBGabbroCMesozoicDDark-green, medium- to coarse-grained gabbro and minor leucogabbro and plagiogranite. Associated with McHugh Complex as fault-bounded bodies.GSV002H112ISeldoviaJIgneousK4880‚AMuBUltramafic plutonic rocksCMesozoic;umeasuredWWWWmedialjWmediumWWWWWW W WWWWWWWWWW W!W"W$W%W'W/WPWlWmWpWqWWWmediumandcoarse-grainedbiotitegranodioriteVmediumandcoarse-grainedbiotitegranodioriteoftheaialikVmediumtocoarse-grainedpinktograygranitic-texturedquarVmediumtodark-grayfoliatedamdiumtocoarse-grainedbiotitVmediumtodark-grayfoliatedmediumtocoarse-grainedbiotitVmedium-grained WWWWWWWmedium-grainednonfoliatedtonaliteVVdark-rustynWoWdarkerWdatedWdatum9W:Wday$W%WdebrisWWW WWWWWWWWOWPWSWWWWWWWWWdebrisflowdepositsofcrescentrivervalleyincludesseverVdebrisflowdepositsofnorthforkcrescentriverdepositsoVVdebrisflowdepositsonthenorthflankofredoubtvolcanoiVdecadesWdeepWdeep-seaWdefinitionWdeformedWWWW,W7W;W=Wdegreens W"W