TERTIARY AND/OR CRETACEOUS (continued)


                Intrusive rocks
.241
TKi   Intrusive rocks, undivided
.244
TKg   Granitic rocks
.362
TKgd  Granodiorite, tonalite and monzonite dikes, and stocks
.666
TKqd  Quartz diorite and diorite dikes and stocks
.667
TKgb  Gabbro and leucogabbro
.644
TKl   Lamprophyre, alkali gabbro, and alkali diorite


              METAMORPHIC ROCKS
.736
TKc   Melange or cataclastite of the Orca Group
.209
TKgg  Gneissose granitic rocks
.81
TPza  Amphibolite facies metamorphic rocks


           UNDIVIDED MESOZOIC ROCKS
---------------------------------------------------------------------
               SEDIMENTARY ROCKS
.973
KTrg  Gemuk Group
                IGNEOUS ROCKS
.375
Mzi   Intrusive rocks
.674
Mzum  Ultramafic and associated rocks


              METAMORPHIC ROCKS
.793
Mzsa  Schist and amphibolite
.793
Mzpca Phyllite, pelitic schist, calc-schist, and
      amphibolite of the MacLaren metamorphic belt


                 CRETACEOUS
---------------------------------------------------------------------
               SEDIMENTARY ROCKS
.749
Kcs   Cantwell Formation, sedimentary rocks subunit
.940
Kms   Minto unit
.800
Km    Matanuska Formation
.851
Kk    Kuskokwim Group, deep marine rocks
.851
Kkn   Kuskokwim Group, non-maine and shallow-marine rocks



  Sedimentary rocks of the Yukon-Koyukuk region
     ------------------------------------------------------
.848
Kme   Melozitna sequence
.848
      Kss  Nonmarine sandstone, quartz conglomerate, shale, 
             and siltstone
.848
      Kqc  Quartz-pebble conglomerate
.848
      Kcg  Igneous pebble-cobble conglomerate
.983
Kvm   Volcanic graywacke and conglomerate

.797
Knb   Norton Bay sequence
.797
      Kshn Nonmarine shale, siltstone, and sandstone 
.803
      Ksse Marine sandstone and siltstone
.803
      Kmm  Marine mudstone and sandstone
.797
      Kgw  Graywacke sandstone and mudstone
.752
Kwcf  Wilber Creek flysch
.983
Kvgm  Volcanic graywacke and mudstone
.745
Ksm   Quartz-carbonate sandstone and pebbly mudstone
.745
Knl   Nelchina Limestone
.745
Kb    Berg Creek Formation


              MELANGE UNITS
.458
KTrm  McHugh Complex
.458
Kmar  Melanges of the Alaska Range
.172
      TrSl  Limestone blocks
.416
      mlu   Ultramafic and associated rocks


                IGNEOUS ROCKS
          Volcanic and hypabyssal rocks
.124
Kvl   Volcanic rocks
.124
Ktg   Volcaniclastic rocks
.124
Kve   Andesite and related rocks


              Intrusive rocks
.251
Kg    Granitic rocks
.251
      Kg    Younger than 85 Ma
.251
      Kg    Older than 110 Ma
.672
Kum   Ultramafic rocks
.291
Ktt   Leucotonalite and trondhjemite



                METAMORPHIC ROCKS
.745
Kvs   Metasedimentary rocks of the Valdez Group
.311
Kvv   Metavolcanic rocks of the Valdez Group

              CRETACEOUS AND/OR JURASSIC
---------------------------------------------------------------------
                   SEDIMENTARY ROCKS
.909
KJw   Wolverine quartzite
.909
KJwc  Wilber Creek and Wolverine quartzite units,  undivided
.909
KJs   Argillite, chert, sandstone, and limestone
.793
KJf   Kahiltna flysch sequence
.793
      KJfk Flysch sequence
.793
      KJfn Flysch sequence
.793
      KJfm Marine metasedimentary rocks
.793
KJcg  Conglomerate, sandstone, siltstone, shale, and 
        volcanic rocks
.851
KJvr  Vrain unit


               IGNEOUS ROCKS
.248
KJg   Granitic rocks


             METAMORPHIC ROCKS
.455
KJhc