Areas not to be filled that lie within coverage, typically not mapped
nm
Bedrock of unknown type or age, Rubble of metasiltstone and chert,
bu
Surficial deposits, undifferentiated
Qs
Ice fields or glaciers
g
Water (streams, lakes, ocean)
Tidal flat and estuarine deposits, offshore, subject to inundation
Qtf
Avalanche deposits
Qad
Alluvium
Qa
Alluvial fan and talus deposits
Qaf
Colluvium
Qc
Landslide deposits
Qls
Older alluvium
Qoa
Terrace deposits
Qt
Abandoned channel deposits
Qac
Lacustrine deposits
Ql
Swamp deposits
Qsw
Natural levee deposits
Qlv
Beach deposits
Qb
Estuarine deposits
Qes
Marine terrace deposits
Qmt
Mineral spring and mud volcano deposits
Qms
Active dune deposits
Qda
Dune deposits
Qd
Loess, Fairbanks loess
Qfl
Frozen silt, undifferentiated
Qsu
Glacial outwash derived fans deposited in ephermeral glacial lakes
Qglf
Glaciolacustrine deposits
Qgl
Glacial deposits, undivided, of Holocene and/or Pleistocene age
Qm
Superglacial drift
Qsg
Rock glacier deposits
Qrg
Solifluction deposits
Qsf
Esker deposits
Qek
Drift, neoglacial
Qhg
Outwash deposits, Neoglaciation
Qho
Drift, undivided, Late Wisconsin-age glaciations, Aleknagik, Brooks Lake, Farewell II, McKinley Park,Riley Creek, Donnelly, Takomahto Lake, and others
Qwu
Latest Wisconsin, Iliuk,  Riley Creek, and other glaciations
Qwr
Late Wisconsin, Newhalen and other till
Qw2
Late Wisconsin, Iliamna and other till
Qw1
Till, Brooks Lake, Kvichak  [Ground moraine assigned Qclass of 1395]
Qw0
Outwash deposits, late Wisconsin-age Glaciations
Qwo
Channeled glacial deposits -- kame and kettle? (Qoc, TY007; TL004; 13f, TL007; TY016)
Qoc
Drumlin deposits in ground moraine fields of Brooks Lake glacial deposits
Qbld
Kame fields, and a few narrow and sinuous eskers that contain mainly gravel and sand, poorly to well-bedded and sorted (Qp, Qk3, Qk2, v, AN007; Qk, Qkd, TK008)
Qgk
Morainal deposits inferred to have been modified during glacioestuarine inundation (N, T, AN007; Qmm, TY008)
Qgme
Deposits of complex origin in the central Cook Inlet basin (FI, AN007; Qf, TY008)
Qgx
Glacio-estuarine deposits including Hood Lake  and Mole Creek deposits (h, mC, AN007; Qh, Qh+, Qmc, TY008; Qts, KN013; SV007)
Qge
Bootlegger Cove Formation (bc, AN007; Qbc, TY008)
Qbc
Rock-defended terraces
Qrd
Altiplanation terraces
Qat
Deltaic deposits, including outwash and alluvial deposits
Qdl
Glaciations older than Late Wisconsin
Qew
Drumlins associated with early glaciations
Qewd
Kame and kame deposits associated with early glaciations
Qewk
Early Wisconsin ground moraine
Qmhg
Older Wisconsin age outwash
Qow
Illinoian glaciations
Qmi
Glacial deposits of unnamed Illinoian(?) glaciations, ground moraine
Qmig
Illinoian glaciation, kame deposits
Qmik
Illinoian glacial deposits, modified by innudation
Qmim
Outwash older than Wisconsin-age
Qmio
Deposits related to but peripheral to older glaciations, primarily associated with Cook Inlet region (Qge, K, AN007; Qkd, TY008)
Qod
Pliocene(?) glaciations
Tmp
Very old outwash deposits
Tmpo
Fringing and fossil carbonate reefs
Qfr
Marine conglomerate and limestone (Pls, MW003)
Qmc
Glaciallly scoured bedrock; may be covered with thin glacially derived deposits
Qsb
Surficial deposits, undivided
QTs
Semiconsolidated marine beach deposits
QTmb
Tilted sedimentary rocks at South Bight, Amchitka Island
QTts
High-level gravel
QTg
Faneto Formation
QTf
Placer and anthropogenic deposits
Qpm
Volcanic rocks, undivided
Qv
Wrangell Lava, younger part
Qw
Holocene volcanic rocks
Qhv
Domes associated with Holocene volcanic centers
Qhd
Pyroclastic (Ash and debris flow) deposits
Qpd
Ash-flow and ash-fall deposits
Qafd
Debris-flow deposits
Qdf
Mudflow deposits
Qmf
Volcanic avalanche deposits
Qav
Hyaloclastite or aquagene tuff
Qshc
Bedded volcanic sediments
Qvs
Cinder and spatter cones
Qcs
Pit craters and calderas {feature, not really unit}
Qpc
Explosion debris
Qed
Basalt of Togiak River Valley, or basalt flows
Qvb
Trachyte flows
Qvt
Mugearite and benmoreite flows
Qvm
Andesite and low-silica dacite
Qva
Dacite and rhyodacite
Qvda
Rhyolite
Qvr
Viscous domes in young Hawaiian volcanic rocks, Hawi and Laupahoehoe Volcanic Series
Qvd
Viscous domes in young Hawaiian volcanic rocks, trachyte
Qvdt
Viscous domes in young Hawaiian volcanic rocks, mugearite and benmoreite
Qvdm
Viscous domes in young Hawaiian volcanic rocks, basalt
Qvdb
Small masses of gabbro in young Hawaiian volcanic rocks, Kahuku Volcanic Series
Qgm
Basalt
QTb
Earlier Wrangell Lavas, West Molokai Volcanic Series (upper), Kanapou Volcanic Series (lower), East Molokai, Lanai, Honolua, Wailuku, Honomanu, Plololu, Hamakua, and Ninole Volcanic Series - Early Pleistocene
Qhvu
West Molokai Volcanic Series (upper) and East Molokai, Lanai, Honolua, Honomanu, Kanapou, Pololu, and Hamakua Volcanic Series cinder, spatter, and littoral cones
Qhcu
East Molokai Volcanic Series (upper), Honolua Volcanic Series viscous domes
Qhvd
West Molokai Volcanic Sereis (lower) and Wailuku, Kula, Kanapou, and Pololu Volcanic Series, gabbro masses
Qhgm
Koolau and West Molokai (lower) Volcanic Series - Early Pleistocene
Qhvl
Koolau and West Molokai (lower) Volcanic Series, cinder, spatter, and littoral cones - Early Pleistocene
Qhcl
Intrusive rocks, undivided
Qi
Dacitic to rhyolitic domes
Andesite plug domes
Qanp
Radial dike swarm and plug
Qds
Basalt dome
Qbd
Quaternary and/or Tertiary volcanic rocks, undifferentiated
QTv
Andesitic lava
QTa
Dacite
QTd
QTr
Olivine basalt flows
QTob
Wrangell Lava
QTw
Intrusive rocks
QTi
Quartz keratophyre dikes
QTqk
Porphyritic dikes and stocks of hornblende andesite and dacite
QTad
Wrangell Lava, rhyodacite and rhyolite domes and associated pyroclastic rocks
QTva
Pochnoi Volcanics - Tuff-breccia, lava flows, and agglomerate, largely basaltic
QTvb
Quaternary and/or Tertiary pyroclastic flow deposits
Kiska Harbor Formation
QTk
Kiska Harbor Formation, breccia member
QTkb
Kiska Harbor Formation, flow member
QTkf
Kula volcanic series and equivalents, undivided
QTkv
Quaternary or Tertiary metamorphic rocks, particularly in Mt. Dana area on Port Moller map
QTc
Sedimentary rocks, undivided
Tsu
Kootznahoo Formation, light greenish gray, medium- to coarse-grained, friable, lithofeldspathic fluvial sandstone and siltstone containing leaf fragments and rare, cm-scale, coal lenses
Tkz
Milky River Formation
Tmr
Sterling Formation
Tsf
Beluga Formation
Tkb
Tugidak Formation,
QTtg
Kenai Group, undivided
Tkn
Kenai Group and West Foreland Formation, undivided
Tkw
Yakataga Formation
Ty
Nenana Gravel, Pliocene and Miocene
Tn
Nenana Gravel?
Tn?
Tachilni Formation, Chuniksak Fm.
Tta
Bear Lake Formation
Tbl
Narrow Cape Formation
Tnc
Siltstone of Trinity Islands
Tsti
Unalaska Formation
Tun
Tyonek Formation, undivided
Tty
Unga Formation (Conglomerate)  and Chirikof Fm.,
Tu
Belkofski Formation
Tbe
Tyonek Formation and Hemlock Conglomerate, undivided
Ttyh
Coal-bearing rocks, Miocene? to Eocene?
Tcb
Hemlock Conglomerate
Th
Nevidiskov Fm.
Tnf
Sitkinak Formation,
Tsk
Tsadaka Formation
Tts
Redwood Formation
Trf
Poul Creek Formation sedimentary and volcanic rocks, undivided (Tp, BG002; Tps, BG003; CV002; CV003; MI002; Tp, MS002)
Tpc
Sitkalidak Formation,
Tsi
Gunners Cove Formation, tuffaceous conglomerate and sandstone, crystal-vitric basaltic tuff, thin basalt flows, and basaltic dikes
Tgc
Banjo Point Formation, sandstone, conglomerate, tuffaceous shale, and lapilli tuff of basaltic composition
Tbp
Carbonate-terrigenous formations in Bering Sea (Pg2-3, BE002)
Tct
Tsadaka and Wishbone Formations, undivided.  Tsadaka is Miocene on (TK002), whereas it is Oligocene on (AN002); Wishbone is Eocene to Paleocene on (TK002) and Eocene on (AN002)
Ttw
Amphithreatre and Kulthieth, mostly fluvial and lacustrine deposits, local debris-flow deposits; some shallow marine
Tak
Volcanic and sedimentary rocks, undivided, Oligocene and Eocene
Tvs
Stepovak and Andrew Lake Formations
Tst
Tokun Formation
Ttf
Stillwater Formation(?)
Tswf
Copper Lake Formation;
Tcl
West Foreland Formation
Twf
Tolstoi Formation, Kulthieth Formation
Tt
Wishbone Formation
Tw
Siltstone of Oily Lake
Tslo
early Eocene fluviatile and subordinate volcanic rocks
Tfv
Arkose Ridge Formation
Tar
Chickaloon Formation
Tch
Sedimentary rocks of Jarvis Creek coal field, undivided
Tjc
Sagavanirktok Formation
Tsg
Sagavanirktok Formation, Nuwok Member
Tsn
Sagavanirktok Formation, Franklin Bluffs Member
Tsfb
Sagavanirktok Formation, White Hills Member
Tswh
Sagavanirktok Formation, Sagwon Member
Tss
Sedimentary rocks of the Orca Group, undivided
Tos
Sedimentary and volcanic rocks of the Orca Group, undivided
Tovs
Conglomerate of the Orca Group
Toc
Orca Group:  Dark-gray to black siltstone, mudstone, and minor fine-grained sandstone
Toss
Ghost Rocks Formation, coherent
TKghc
Ghost Rocks Formation, sandstone-rich unit, undivided
TKghs
Ghost Rocks Formation, argillite-rich unit, undivided
TKgha
Rocks within major fault zones; may be cataclastic or mylonitic, variable ages depending on fault and country rocks
fg
Tertiary volcanic rocks, undivided
Tvu
Rhyolitic volcanic and sedimentary rocks
Trs
Tda
Andesite; on map I-1685 unit Tau was subdivided for Alaska Peninsula map depending on location
Ta
Tb
Hypabyssal intrusive rocks of uncertain age
Thf
Hypabyssal felsic and intermediate intrusions.  Age range Paleocene to Miocene, mostly Early Tertiary or Eocene?
Hypabyssal mafic intrusions.  Age range varies, includes Miocene to Paleocene
Thm
Modern Aleutian arc volcanic rocks
Tav
Modern Aleutian arc volcanic rocks, andesite
Tava
Modern Aleutian arc volcanic rocks, basalt
Tavb
Hornblende dacite of Jumbo dome
Thd
Alkalic basalt flows and pyroclastic rocks
Talb
Paniau, Waimea Canyon, and Waianae Volcanic Series, tholeiitic basalt, olivine basalt and oceanite
Thb
Intricate Basalt
Tib
Gibraltar Lake Tuff, Upper member
Tpgu
Gibraltar Lake Tuff, Lower member
Tpgl
Waimea Canyon Basalt; Makaweli Member ash and tuffaceous soil
Twca
Waimea Canyon Basalt and Waianae Volcanics, cinder, spatter, or littorial cones
Thc
Wrangell Lava, Pliocene to Oligoocene lower part, undivided
Twl
Wrangell Lava, rhyolitic rocks, undivided
Twr
Wrangell Lava, obsidian-bearing rhyolite flow
Twor
Wrangell Lava, dome and hypabyssal rocks
Twd
Paniau, Waimea Canyon, and Waianae Volcanic Series, small mass of gabbro
Thgm
Paniau Basalt
Tpb
Miocene volcanic rocks
Tv
Miocene and Pliocene andesite and basalt
Tab
Miocene basaltic andesite
Tba
Miocene and/or Pliocene hypabyssal dacite and rhyolite intrusions, includes unit Tdp, Dacite plugs on I-1229; rhyolite and dacite dikes and sills
Tdi
Tmrf
Wrangell Lava, hypabyssal and plutonic rocks
Twp
Olivine basalt flows and cinder cones
Tmb
Cenotaph Volcanics, undivided
Tcv
Admiralty Island volcanics, undivided
Admiralty Island and Cenotaph Volcanics, rhyolite
Tacr
Admiralty Island and Cenotaph Volcanics, dacite
Tavd
Admiralty Island and Cenotaph Volcanics, andesite
Admiralty Island and Cenotaph Volcanics, basalt
Admiralty Island and Cenotaph Volcanics, volcaniclastic rocks
Tavc
Lavas and pyroclastic deposits, most likely Miocene or younger Tertiary
Tlp
Lavas and pyroclastic deposits, early Miocene; Unga Arc
Temv
Crystal and crystal-lithic ash-flow tuff
Tvr
Volcanic rocks, including basaltic breccia, tuff and a few pillow lava flows; Vega Bay Formation.  Also, volcanic rocks of Poul Creek Formation
Meshik Volcanics (Formation); Mt. Galen volcanics; Ship Creek, Windy Fork, and Terra Cotta volcanic fields, McGrath
Tvb
Basaltic lavas of the Meshik volcanic arc
Andesitic and dacitic rocks of the Meshik volcanic arc
Tvm
Andesite plug dome
Tap
Popof volcanic rocks, only in Shumagin Islands = Meshik
Tp
Rhyolitic to dacitic volcanic rocks
Tvrd
Chiefly block and ash deposits, mafic to felsic tuff, tuff breccia, lapilli tuff, and unclassified pyroclastic deposits
Tvc
Mafic dikes, sills, and plugs
Tmd
Krugoli Formation, lava.
Tkv
Krugoli Formation, tuff and tuff-agglomerate.
Tka
Basement rocks, including basaltic, spilitic, and keratophyric lava and tuff.  Pillow lava very common, western Aleutian Islands
TMzbv
Andesite and basalt flows
Tvab
Moderately altered rhyolite flows, Nukluk Volcanic Field
Tver
Massive basalt and andesite, Nukluk Volcanic Field
Tvnb
Rhyolitic and dacitic tuff (44 Ma)
Trd
Tuff and breccia, Eocene or Paleocene
Tvep
Felsic hypabyssal intrusions [within unit Tfu of HC002]
Tvei
Mafic basalt, layered tuff, tuff breccia and breccia
Tbep
Intermediate to felsic biotite tuff
Tvig
Orca Group, volcanic rocks, undivided, Paleocene and Eocene?
Tov
Orca Group:  Pillow basalt
Top
Orca Group, sheeted dikes, Paleocene and Eocene?
Tosd
Cantwell Formation, volcanic rocks subunit
Soda rhyolite and basalt
Tsr
Ghost Rocks Formation, andesitic volcanic and hypabyssal rocks
Tgva
Ghost Rocks Formation, basalitic volcanic and hypabyssal rocks
TKgvb
Intermediate to mafic volcanic rocks, Paleocene
Tpv
Tertiary intrusive rocks, undivided
Tiu
Granite
Tgr
Quartz monzonite and similar rocks
Tqm
Granodiorite, undivided
Tgd
Gabbro and diorite, undivided
Tgb
Granitic and volcanic rocks, undivided.  Age range Oligocene to Paleocene
Tiv
Wrangell Lavas, shallow plutons, chiefly dacite, diorite, and quartz diorite
Twh
late Miocene and Pliocene granitic intrusive rocks of the Agripina Bay, Moss Cape, American Bay, and Devils batholith and other similar age plutons
Ti
Granite and granitic rocks
Tmgr
Quartz monzonite
Tmog
Diorite,
Td
Gabbro,
Tgg
Granitic rocks
Togr
Granite and quartz monzonite porphyry
Togp
Peralkaline granite and related rocks
Tpag
Granodiorite and quartz diorite
Togd
Quartz diorite and diorite
Toqd
Gabbroic rocks
Togb
Oligocene basalt plug
Tobp
Toegr
Granodiorite to tonalite
Toem
Oligocene and Eocene diorite
Toed
Gabbro or gabbro and diorite, Prince William Sound
Toeg
Granite and granodiorite, Tertiary(?) Eocene?
Tegr
Felsic intrusions, leucocratic dikes, sills and small stocks, south of Border Ranges fault
Tfd
White Pass Plutonic Province, Biotite granite and sphene-biotite granite
Coast Plutonic Complex
Tegd
Quartz monzonite, monzonite breccia, and quartz porphyry
Tgmp
Quartz diorite
Teqd
Porphyritic granodiorite distinctive phase of Coast Plutonic Complex
Tgdp
Tonalite
Tet
Gabbronorite and norite
Tgn
Granitic rocks, including early Tertiary granitic intrusive rocks of the Kodiak, Shumagin, Semidi, and Sanak Islands
Tg
Peralkaline granite
Tpgr
Hypabyssal granitic rocks
Tgh
Granitic rocks, ranging from granite to granodiorite, mostly felsic
Tpg
Biotite-hornblende granodiorite,
Thgd
Biotite diorite
Tpd
Dark-colored dikes and sills consisting of diabase, basalt, dioritic and gabbroic mafic intrusive rocks
Tim
Orca Group gabbro and diorite
Orca Group ultramafic rocks
Tou
Hornblende and pyroxene-hornblende gabbro
Tgl
Cottonwood Creek Complex, gniess and amphibolite
Tgma
Migmatite associated with Tertiary plutons (TKmm, MF003)
Tomg
Leucocratic granodioritic migmatite of the Coast Plutonic Complex
Tcpm
Another Coast Plutonic Complex migmatite
Tcpm2
Conglomerate, sandstone, and lignite
TKcg
Prince Creek Formation, shelf deposits
TKpc
Canning Formation, basinal turbidite deposits
TKcf
Conglomerate and sandstone
TKcs
Marine and nonmarine conglomerate to shale, Jago
TKcm
Krugoli Formation, undifferentiated
Tk
Basement rocks - coarse-grained and conglomeratic sedimentary rocks
Tkc
Basement rocks - undifferentiated
TMzu
Basement rocks - fine-grained sedimentary rocks.
TMzf
Basement rocks - conglomerate, argillite, siltstone, and chert.
TMzc
Extrusive rocks, flows, tuff, and breccia
TKv
Dikes and subvolcanic rocks
TKd
Hypabyssal granite porphyry dikes, sills, and plugs
TKgp
Volcanic rock, light gray to pink rhyolite
TKvr
Volcanic rocks, dacite
TKvd
Younger phase of Iditarod Volcanics and similar units
TKvi
Felsic tuff
Rhyolite-andesite plugs and domes
Felsic volcanic rocks
Mafic to intermediate volcano-plutonic complexes
TKiv
Basalt and andesite, Whitefish Lake volcanic field
TJb
Flat-lying to gently dipping mafic flows of andesite and basalt, and volcaniclastic deposits of andesitic and basaltic tuff and conglomerate
TKmv
Mafic and ultramafic intrusive rocks including pluglike body of augite andesite porphyry and a small dikelike body of augite peridotite
TKum
Mafic dikes
TKmd
TKi
TKg
Granite and alaskite
TKgr
Syenitic rocks
TKgs
Quartz monzonite, granodiorite, and quartz monzodiorite including Mount Estelle granodiorite
TKgm
More mafic granitic rocks, tonalite,  monzonite
TKgd
Foliated tonalite sill of Coast Plutonic Complex
TKtf
Tonalite migmatite of the tonalite sill of the Coast Plutonic Complex
TKtm
Granitic unit 3, quartz diorite and diorite dikes, stocks, and small plutons
TKqd
Gabbro and dark-colored dikes and sills consisting of diabase, basalt, dioritic and gabbroic mafic intrusive rocks
TKgb
Trondhjemitic pegmatite
TKtp
Gabbro, undifferentiated, Tertiary to Devonian age
TDg
Gabbro and diorite, Tertiary to Jurassic age
TJgd
Mafic intrusive rocks, Nyack terrane
TJm
Lamprophyre, alkali gabbro, and alkali diorite
TKl
Cataclastite
TKc
Gneissose granitic rocks
TKgg
Gneissose mafic rocks
TKmg
Ghost Rocks
TKgh
Orca Group melange
TKmx
Undivided marine and non-marine shale and siltstone
Knb
Sandstone (Ksr, MK004)
Ksr
Calcareous graywacke and mudstone, volcanic graywacke, and volcanic conglomerate
Kcvg
Calcareous graywacke and micaceous, calcareous mudstone turbidite deposits
Kcg
Nonmarine and marine carbonate-rich conglomerate and sandstone deltaic deposits
Kcc
Conglomeritic facies of carbonate-rich sandstone, siltstone, and shale turbidite deposits.
Kcgc
Graywacke of the Yenlo Hills
Kyh
Shale and siltstone
Ksh
Sandstone, Late Cretaceous
Ksa
Volcaniclastic sandstone
Kvss
Shumagin Formation
Kshf
Hoodoo Formation
Kh
Shumagin Formation, mudstone member
Ksmd
Kodiak Formation
Kkf
Cantwell Formation, sedimentary rocks subunit
Kcs
Schrader Bluff Formation
Ksb
Schrader Bluff Formation, upper member
Ksbu
Schrader Bluff Formation, middle member
Ksbm
Schrader Bluff Formation, lower member
Ksbl
Late Cretaceous undifferentiated clastic rocks
Ku
Non-marine sandstone, quartz conglomerate, shale, and siltstone
Kss
Limy volcaniclastic sandstone
Kk
Non-marine shale, siltstone, and sandstone
Kshn
Kaguyak Formation
Kkg
Chignik Formation
Kc
Chignik and Hoodoo Formations, undivided.  Also includes Late Cretaceous rocks called Kaguyak Fm. on the west side of Cook Inlet in the Seldovia quad
Khc
Kuskokwim Group, sandstone, siltstone, shale, and conglomerate
Volcanic provenance sandstone, siltstone, and shale, Kuskokwim Group
uKss
Minto unit, siltstone, mudstone, graywacke, quartzose sandstone, plant fragments, Late Cretaceous(?)
Kms
Kuskokwim Group, nonmarine to marginal marine quartzose sandstone and siltstone
Kkn
Quartz-pebble conglomerate, early Late Cretaceous
Kqc
Tuluvak Formation (includes Ayiyak Member of Seabee Fm.)
Ktu
Matanuska Formation, fossiliferous marine shale, late Early Cretaceous to Late Cretaceous
Km
Melozitna group, informal name; Shaktolik (sp) Group (abandoned name), graywacke, shale, grit, and conglomerate
Kme
Sandstone, shale, and conglomerate deltaic deposits  [see also 2180]
Rhyolite and dacite, and sandstone, shale, and conglomerate deltaic deposits and intricately intruded areas of volcanic graywacke and mudstone, late Early Cretaceous (Albian)
Ksi
Undivided Lower Cretaceous sedimentary rocks, northern Alaska
Klu
Igneous pebble-cobble conglomerate, Albian and Late Cretaceous?
Kipc
Seabee Formation (now only former Shale Wall Member)
Ksbf
Seabee Formation and Nanushuk Formation, undivided (Ksn, IK003; LR002)
Ksbn
Nanushuk Formation, includes former Kukpowruk, Tuktu, Grandstand, Corwin, Chandler, and Ninuluk Formations, now abandoned
Knf
Nanushuk Formation, upper part
Knu
Nanushuk Formation, lower part
Knl
Torok Formation, Aptian to Cenomanian
Kto
Torok and Fortress Mountain Formations, undivided, Aptian to Cenomanian
Ktfm
Early Cretaceous Nelchina Limestone
Knls
Marine sandstone and siltstone, Early Cretaceous
Ksse
Calcareous graywacke and conglomerate
Kgcg
Volcanic graywacke and mudstone, late Early Cretaceous (Albian)
Kvgm
Conglomeratic facies, Volcanic conglomerate and breccia
Kvcc
Berg Creek Formation  and Nelchina Limestone
Kbc
Early Cretaceous flysch, Wilber Creek unit
Kwcf
Pedmar Formation, Albian
Kp
Kandik Group equivalent, Mount Goodenough in Yukon?
Kkd
Kandik Group; Kathul Graywacke
Kkt
Quartz-carbonate sandstone and pebbly mudstone, Early Cretaceous, Valanginian-Aptian
Ksm
Biederman Argillite, Kandik Group, Valanginian
Kba
Kongakut Formation, pebble shale and siltstone
Kko
Pebble Shale unit
Kps
Cape Current terrane
Kcct
Keenan Quartzite, Kandik Group, Valanginian
Kkq
Argillite, Early Cretaceous(?)
Karg
Unnamed sandstone along Nation River, stratigraphically below Keenan Quartzite
Kus
Herendeen Formation or Limestone on some maps;
Khe
Limestone, Early Cretaceous(?), primarily Inoceramus prisms
Kli
Marine mudstone and sandstone
Kmd
Ungalik Conglomerate [Not used]
Kuc
Staniukovich Formation
Kst
Earliest Cretaceous volcanic graywacke and conglomerate
Kvm
Earliest Cretaceous volcanic conglomerate
Klvm
Fortress Mountain Formation, interbedded wacke and mudstone
Kfm
Okpikruak Formation and may include Fortress Mountain Formation, interbedded wacke and mudstone
KJo
Coquina limestone of the Okpikruak Formation
Kofc
McHugh Complex, Uyak Complex, melange
Kmk
Phyllite/greenstone melange; occurs structurally between the McHugh Complex and Valdez Group
Mzpg
Melange south of McKinley Fault
Kmar
Melange south of McKinley Fault, limestone blocks
TrSl
Melange north of McKinley Fault, ultramafic rocks
Kmu
Melange north of McKinley Fault [same as Kmy and Kmz in Healy quad?, subdivided also on map])
Melange north of McKinley Fault, limestone blocks ( (mnl)Kmn, HE002)
Uyak Complex, gabbro and ultramafic rocks
Kmku
McHugh Complex, graywacke and conglomerate
KJms
McHugh Complex, basalt and chert
KTrmc
Hypabyssal rocks, dacite and rhyolite porphyry
Kvfp
South Fork Volcanics, locally columnar jointed, massive, densely welded, biotite-quartz-hornblende-feldspar crystal tuff
Ksf
Intermediate and felsic volcanic rocks
Kvi
Cretaceous basalt, local pillow flows, probably early Cretaceous
Kvb
Andesitic subvolcanic rocks
Ksva
Basaltic subvolcanic rocks
Ksvb
Iditarod Volcanics, Kipchuk Volcanic Field, and similar units, flows, tuff, and agglomerate
Kvl
Iditarod Volcanics, Kipchuk Volcanic Field, and similar units, tuff dominated units
Kvt
Intermediate and silicic pyroclastic deposits
Kpd
Kwt
Tuff, volcanic graywacke, and mudstone
Ktg
Andesitic volcanic rocks (earliest Cretaceous, Neocomian, but may include Albian)
Kva
Spilitic pillow basalt and diabase , see also 2230
Kbd
Shoshonitic flows and tuffs (Kft, UL002) [Overprint symbol 13]
Kft
Chisana Formation, andesitic flows and volcaniclastic rocks, also includes Gravina Belt volcanics in southeast Alaska, which may also be in part Late Jurassic in age
Kcve
Dikes, granite to diorite
Kdg
Basaltic andesite dikes
Kd
Pegmatite
Kpg
Granitic Rocks
Kgu
Tourmaline bearing granite
Kgt
Granodiorite
Kgd
Kqd
Gabbro of Mount Moffit
Kmum
Serpentinite, diabase, gabbro, and mafic volcaniclastic rocks
Alaskite [< 85 Ma]
Kga
Granite [< 85 Ma]
Kgl
Syenite [< 85 Ma]
Kgs
Quartz monzonite, monzonite, and syenite [< 85 Ma]
Kgk
Kgm
Kgdt
Granite 85-110 Ma
Kmg
Quartz monzonite, monzonite, and syenite 85-110 Ma
Kmqm
Intermediate granitic rocks, mostly granodiorite (Kwqo, PE002; Kwqo, Kwan, PE003) [Overprint symbol 16]
Kmgd
Intermediate granitic rocks, mostly quartz diorite and tonalite, magmatic garnet and epidote 85-110 Ma
Kmqd
Gabbro (not zoned ultramafic)
Kmgb
Ultramafic rocks, especially including zoned ultramafic bodies of southeast Alaska
Diorite
Alkaline dikes
Kmad
Mafic plutonic rocks, mostly diorite and quartz diorite with subordinate tonalite and gabbro 85-110 Ma.  Southeast Alaska (Kkhd, SK003; Kdqd, SK005; Kd, SK006)
Kdqd
Serpentinized ultramafic rocks
Granite (lKgg, RB009) [Overprint symbol 14]
Keg
Slana pluton, hornblende granodiorite, Nabesna pluton, granodiorite and quartz diorite, Antler Creek pluton, syenodiorite, Border of Antler Creek pluton, hornblendite, Klein Creek pluton, granodiorite and quartz monzonite [>110 Ma]
Foliated granodiorite
Kgdf
Quartz-feldspar porphyry [>110 Ma]
Quartz monzonite [>110 Ma]
Nephelene syenite
Kns
Diorite, quartz diorite and syenodiorite [>110 Ma]
Syenite
Ksy
Gabbro of Tenakee Inlet on Chichagof Island
Kegb
Leucotonalite and trondjemite
Ktt
Foliated (or cataclastic/mylonitic) quartz diorite
Kgdc
Metamorphosed granitic rocks, wide range of compositions from quartz monzonite to diorite
Kmi
Migmatite associated with Cretaceous plutons of southern Brooks Range
Kmn
Foliated quartz monzonite and granodiorite
Kqm
Migmatite associated with western plutonic belt of southeast Alaska (Wales-Chichagof arc)
Migmatite and migmatitic schist
Mzsa
Hornfels and gniess [Also gneissose areas within hornfels, largely on the Tanana geologic map
Khg
Rocks of Hammond River shear zone
Khs
Metagabbro, metadiabase, and minor amphibolite
Intermediate volcanic and sedimentary rocks
Kivs
Metasedimentary rocks of the Valdez Group
Kvs
Valdez Group, Interbedded volcanic and sedimentary rocks
Kvvs
Valdez Group, metavolcanic rocks, undivided
Kvv
Laminated tuff, Valdez Group (Kvt, AN002; SR004; BS004)
Kvgb
Valdez Group, melange of Iceworm Peak
Kvml
Valdez Group -- Schistose metaflysch
Kvg
Valdez Group -- Schistose to gneissic metaflysch and migmatite
Kvsg
Pelitic schist
Telavirak Formation
KJtf
Telavirak and Ogororuk Formations, undivided (KJot, PH004)
KJto
Argillite, chert, sandstone, and limestone
KJs
Wilber Creek and Wolverine quartzite units, undivided
KJwc
Wolverine unit, quartzite and interbedded shale and siltstone, Late Jurassic or Early Cretaceous
KJw
Quartzite of the Wolverine quartzite unit
KJwq
Sandstone and shale of the Wolverine quartzite unit
KJws
Marine sedimentary rocks of Gravina-Nuzotin unit
KJfn
Conglomerate, sandstone, siltstone, shale, and volcanic rocks, westernmost outcrops of the Gravina-Nuzotin belt
KJcg
Sedimentary and volcanic rocks of the Gravina belt, undivided
KJgb
Conglomerate and sandstone, possibly northern shore facies of Nutzotin Mountains sequence
Mzc
Metasedimentary rocks
KJfm
Marine volcaniclastic sandstone, conglomerate, and argillite
KTrs
Marine volcaniclastic sandstone, conglomerate, and argillite apparently cut by dikes or shallow intrusions
KTrsi
Argillite and tuffaceous chert
KJc
Kingak Shale
KJks
Pebble shale and Kingak Shale, undivided
KJsh
Yakutat Group, undivided
KJyg
Yakutat Group, flysch facies
KJys
Flysch sequence, Early Cretaceous and Late Jurassic
KJf
Flysch sequence (Early Cretaceous and Late Jurassic
Flysch sequence, Late Cretaceous to Late Jurassic (unit KJfl, HE002; KJm, MG002; KJs, TL002) [Overprint symbol 14]
Feldspathic sedimentary rocks
Turbiditic sedimentary and volcanic rocks
Kesv
Koksetna River sequence, Jura-Cretaceous flysch, southern part of Kahiltna terrane
KJkr
Vrain unit, pyritiferous shale and minor siltstone; not flysch, equivalent to upper part of Glenn Shale
KJvr
Glenn Shale, upper unit, Early Cretaceous to Middle Jurassic
KJgu
Sitka Graywacke, undivided
KJsgu
Sitka Graywacke graywacke and argillite
KJsgs
Basalt and andesite flows, Whitefish Lake volcanic field, Nyac terrane
KJba
Volcanic and sedimentary rocks
KJvs
Olivine basalt
KJv
Tuffaceous subunit of unit MzPzat
KJvt
Chert and volcanic sequence (Late Cretaceous and(?) Jurassic,)
KJcv
Highly altered hypabyssal rhyolite and dacite
TJih
Pillow basalt
JTrtv
Volcanic Rocks of the Sitka Graywacke
KJsv
Volcaniclastic rocks of the Brooks Range.  May be included in Okpikruak Formation
KJvc
Granitic rocks and minor monzonite
KJg
Saint Elias Suite, biotite hornblende granodiorite; lesser tonalite; locally quartz monzodiorite, quartz diorite, granite, and quartz monzonite
KJse
Gabbro and diorite
KJgg
Ultramafic rocks (Early Cretaceous or Jurassic) [Compare to Kum (AN002)]
KJmu
Yakutat Group, melange facies
KJyx
Yakutat Group, melange facies, sandstone masses
KJyxs
Yakutat Group, melange facies, conglomerate masses
KJyxc
Yakutat Group, melange facies, greenstone masses
KJyxg
Yakutat Group, melange facies, tonalite masses
KJyxd
Khaz melange or melange associated with the Sitka Graywacke
KJsx
Khaz melange, sandstone mass
Marine metasedimentary rocks, flysch, Early Cretaceous and Late Jurassic, part of the Gravina-Nuzotin belt
Undifferentiated greenstone, metapelitic rocks, and metasandstone of the Gravina belt
KJgm
Deformed, disrupted, and metamorphosed mafic to intermediate and minor felsic volcanic rocks, (Gravina?)
KDvd
Metamorphic rocks of the Brabazon Range (Yakutat Group equivalent)
KJyb
Schist of Nunatak Fiord
Kynf
Yakutat Group Greenstone
Kyxg
Metamorphosed quartz diorite, granodiorite, and diorite
KJmqd
Jurassic sedimentary rocks, marine, undivided
Jsu
Jvs
Ogotoruk Formation, Late Jurassic, Oxfordian-Tithonian
Jof
Naknek Formation
Jn
Naknek Formation, Pomeroy Arkose member (Jn (part), IL002; Jnp, IL006: IL007; KN005; SV004)
Jnp
Naknek Formation -- Northeast Creek Sandstone Member  (Jnn, AF008; CG004; IL006; IL007; KN005; KR002; KR004; MK004; MK005; NK004; PM002; SW002; SW004; UG004; Jns, UG002; JNss, SV004)
Jnn
Naknek Formation -- Snug Harbor Siltstone Member  (Jns, AF002; AF008; CG004; IL006; IL007; KN005; PM002; KR004; MK004; MK005; SV004; SW002; SW004; UG004; Jnst, KR002; UG002; UG004)
Jns
Naknek Formation -- Indecision Creek Sandstone Member (Jni, AF002; CG004; IL006; KR004; MK004; MK005; PM002; SW002; SW004; UG004)
Jni
Naknek Formation -- Katolinat Conglomerate Member (Jnk, MK005; UG004)
Jnk
Naknek Formation -- Chisik Conglomerate Member (Jnc, CG004; IL006; IL007; KN005; KR002; KR004; MK005; UG002; UG004)
Jnc
Naknek Formation -- undivided Northeast Creek Sandstone Member and Chisik Conglomerate Member (Jnn, CG004; UG004)
Jnnc
Naknek Formation -- undivided Indecision Creek Sandstone Member and Snug Harbor Siltstone Member (Jni, CG004; UG004)
Jnis
Shelikof Formation (Jss, Sandstone member, Jsst, Siltstone member, and Jsc, Conglomerate member, all on I-1685 now abandoned) [Shelikof Fm. is equivalent to the upper part of the Chinitna Fm. (Pavelof Siltstone Member)]
Js
Chinitna Formation
Jc
Chinitna Formation, Tonnie Siltstone Member
Bug Creek, undivided.  Several cycles of shale and shelf sandstone in northern Yukon, fining generally to the northwest, and including equivalent generally fine clastic strata in central Yukon.
Jb
Bug Creek Group, succession of alternating coarse and fine clastic formations
Kotsina Conglomerate, Middle and/or Late Jurassic?
Jkt
Unnamed marine sedimentary rocks, sandstone, siltstone, mudstone
Juc
Marine arkosic sandstone and argillite, Togiak terrane
Ja
Chinitna Formation and Tuxedni Group, undivided
Jtxc
Graywacke of Kulukak Bay (Weary Graywacke)
Jkw
Turbidites of Metervik Bay, subdividion of graywacke of Kulukak Bay (Weary Graywacke)
Jkmb
Volcaniclastic turbidites of Togiak Bay - Goodnews terrane
Jvt
Tuxedni Group, undivided
Jtx
Tuxedni Group, Bowser Formation
Jtb
Tuxedni Group, Twist Creek Siltstone
Jtt
Tuxedni Group, Cynthia Falls Sandstone
Jtc
Tuxedni Group, Fritz Creek Siltstone
Jtf
Tuxedni Group, Gaikema Sandstone
Jtg
Tuxedni Group, Red Glacier Formation
Jtrg
Kialagvik Formation [Kialagvik Fm. is similar to the lower upper part of the Tuxedni Group]
Jk
Laberge Group, arkosic sandstone and minor shale with resistant heterolithic pebble and boulder conglomerate; recessive, thin bedded, silty shale
Jl
Tatina River volcanics, Upper member, phosphatic shale and volcaniclastic sandstone
JTrps
Micaceous, fine-grained black graywacke, siltstone, and slate, and gritty limestone.
Jms
Volcaniclastic turbidites
Talkeetna Formation [Listed as sedimentary rock unit above; varies, essentially volcanic in Cook Inlet region, sedimentary on Alaska Peninsula. Thought in part to be Late Triassic.]
Jtk
Talkeetna Formation, Horn Mountain Tuff member
Jtkh
Talkeetna Formation, Portage Creek Agglomerate member
Jtkp
Talkeetna Formation, Marsh Creek Breccia member
Jtkm
Volcanic and sedimentary rocks, possible Talkeetna equivalent
Jlvs
Coarse volcaniclastic sedimentary rocks
JTrcv
Phyllite and chert, possible Talkeetna stratigraphic equivalent [Compare with 3850]
JTrp
Pogibshi Formation of Kelley (1980)
JPp
Strangle Woman Creek sequence, undivided
JMsu
Strangle Woman Creek sequence, quartzite and shale
Jqs
Strangle Woman Creek sequence, quartzite, shale, and sandstone
JMqs
Younger strata of the Porcupine River sequence, undivided
JMpu
Laminated tuffs and associated rocks
Jlt
Ultramafic rocks including layered quartz gabbro Lumped units 3345, 3405, 3490, 3491, 3495, 3540, 3545
Jmu
Trondhjemite
Jtr
Alkalic gabbro
Alaska-Aleutian Range batholith, undifferentiated
Ji
Granite of Alaska-Aleutian Range batholith
Jgr
Granodiorite of Alaska-Aleutian Range batholith
Jgd
Quartz diorite of Alaska-Aleutian Range batholith and Chitina Valley batholith, quartz monzodiorite, quartz diorite, tonalite, and granodiorite
Jqd
Quartz diorite and tonalite
Jqt
Diorite and Gabbro of Alaska-Aleutian Range batholith
Jdg
Largely gabbroic rocks, may include minor ultramafic or dioritic rocks
Jgb
Largely gabbroic rocks, may include minor ultramafic or dioritic rocks, associated with Alaska-Aleutian Range batholith
Jgaa
Bokan Mountain peralkaline granite and syenite
Jpg
Intermediate plutonic rocks, Northern Alaska
Jgi
Lamprohyre and maifc dikes associated with Iliamna Volcano, thought to be Jurassic
Jla
Andesitic and basaltic flows, flow breccias and epiclastic marine rocks; younger than Talkeetna
Jvab
Middle Jurassic interbedded volcanic and sedimentary rocks
Jmv
Igneous complex of Siniktanneyak Mountain, basalt at highest stratigraphic level.  Includes pillow breccia, part of ophiolite.
Jsb
Spruce Creek tonalite, Kugruk Fault Zone
Jsct
Gabbronorite and other mafic and ultramafic rocks, Middle and Early Jurassic of Hidden terrane (Chugach Mountains)
Diorite of southeast Alaska
Jtw
Ultramafic and mafic rocks, Middle to Early Jurassic
Cumulate ultramafic rocks
Jtu
Harzburgite tectonite
Ultramafic and mafic rocks, Middle to Early Jurassic; Dishna River mafic and ultramafic rocks
Nordenskiold Dacite
Jnd
Granodiorite of Hagemeister Island, early Jurassic age
Jlgd
Early Jurassic granite and granodiorite of Hidden terrane (Chugach Mountains)
Jetr
Early Jurassic quartz diorite and tonalite of Hidden terrane (Chugach Mountains)
Jeqt
Early Jurassic mafic and intermediate plutonic rocks of Hidden terrane (Chugach Mountains)
Jemi
Hornblende gabbro and leucogabbro (layered)
Ultramafic rocks, Early Jurassic or older
Granodiorite of Taylor Mountain batholith and related(?) rocks
JTrg
Hornblende syenite porphyry
Jsy
Metamorphic and plutonic rocks, undifferentiated, Jurassic,
Jpmu
Schist of Kodiak Island, = Raspberry Schist of Roeske and others (1989).  Equivalent to Seldovia Schist and Schist of Iceberg Lake in Cook Inlet Region and Schist of Liberty Creek,
Jsch
Texas Creek granodiorite (metamorphosed)
Jmgd
Migmatite border zone of granodiorite
Bug Creek Group, Lower Schist: dark grey argillite, slate, and phyllite, commonly graphitic, thin-bedded dark grey quartzite, platy to phyllitic quartzite; minor phyllite and limy quartzite
Jbs
Kingak Shale, Shublik Formation, and Karen Creek Sandstone, undivided
JTru
McCarthy Formation, argillite and impure limestone (Early Jurassic-Late Triassic)
JTrmc
Limestone, shale, and chert (Early Jurassic(?)-Late Triassic (Norian)); newly recognized unit in Taylor Mtns.
Red and brown sedimentary rocks and basalt (Early Jurassic-Late Triassic)
JTrsu
Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?)
JTrct
Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?), thought largely Triassic
JTrta
Gabbro, associated basalt and andesite(?), minor diorite and diabase, and undiffereniated mafic- and intermediate composition igneous rocks.
JTrgb
Gabbro, diabase, basalt, microgabbro, and minor diorite; dark-grayish-green to dark-gray.  Brooks Range
KTrgb
Basalt or basic igneous rocks of Brooks Range ophiolite
JTrob
Probable dismembered altered ophiolite complex consisting of mafic flows, dikes, volcaniclastic rocks, and gabbro, subdivided:
JTro
JTropb
JTrot
Diabasic intrusive rocks
JTrod
Pyroxene gabbro
JTropg
JTrosu
JTrdi
Calcareous schist and phyllite
JTrcs
Metabasaltic schist
TrPrmb
Volcaniclastic glaucophane-hornblende-epidote schist
TrPvs
Trsu
Black shale and chert, Triassic
Trsc
Triassic limestone, shale, and chert
Trlc
Fossiliferous limestone from the northeast Taylor Mountains quadrangle
Trlt
Shublik Formation, black shale, sandstone, and silty limestone.  Possibly equivalent to lower Glenn Shale [4034]
Trsf
Karen Creek Sandstone and Shublik Formation, undivided
Trks
Shublik and Siksikpuk Formations, undivided
TrPss
Port Graham Formation of Kelley (1980)
Trpg
Kamishak Formation [includes some volcanic rocks]
Trk
Limestone and basalt sequence, Late Triassic, Norian
Trlb
Ursus Member, Kamishak Formation
Trku
Middle Member, Kamishak Formation
Trkm
Bruin Limestone Member, Kamishak Formation
Trkb
Karen Creek Sandstone
Trkc
Upper Triassic limestone, might not be Chitistone -- Nizina equivalent
Trl
Chitistone and Nizina Limestone units, undivided
JTrlm
Limestone and marble
Spiculite and sandy limestone, Late Triassic, Norian (Trs, MD002) [Overprint symbol 708]
Trsl
Calcareous sedimentary rocks, Late Triassic, middle(?) Norian and Late Karnian
Trcs
Glenn Shale, lower unit, Late and Middle Triassic.  Possibly equivalent to Shublik Formation [4015]
Trgl
Limestone, chert and some greenstone
Trvs
Conglomerate and volcanic sandstone, Late Triassic, Norian
Trcg
Synorogenic clastic rocks
Red beds, Late Triassic
Trr
Calcareous phosphatic shale and limestone [probably correlative with lower part of Glenn Shale]
Otuk Formation, Triassic
Siksikpuk Formation, Etivluk Group, chert and shale
TrPask
Imnaitchiak Chert, Etivluk Group equals chert of Siksikpuk Formation
TrPaic
Sadlerochit Group and Siksikpuk Formation?, undifferentiated (TrPss, TrPss?, AC002)
TrPass
Conglomerate and shale, Middle Triassic
Trcgs
Stikine terrane limestone, sandy limestone, and mudstone
Trls
Shuyak Formation, sedimentary member
Trss
Sadlerochit Group, undivided
TrPsg
Sadlerochit Group, Ivishak Formation
Tri
Early Trissic limestone of Chulitna region
Trcl
Middle Triassic or older red-colored tuff, basalt, graywacke, and conglomerate
Trvt
Rhyolitic lava and breccia, tuff, chert, and shale, in Kantishna quadrangle, unit eliminated on newer TN003 compilation
Mafic igneous rocks, Triassic(?)
Trn
Tatina River Volcanics, lower members, pillow basalt and gabbro [see 5450, 2890, all thought to be same unit]
Upper Triassic volcanic rocks
Trv
Povas unit of Yukon, andesitic basalt flows, breccia, tuff, sandstone and argillite; local dacitic breccia and tuff with minor limestone; greenschist, chlorite schist, chlorite-augite-feldspar gneiss, amphibolite
Trp
Mafic dikes, sills, and plugs intruding Shuyak Formation
Trvm
Shuyak Formation, volcanic member
Trsv
Afognak pluton, U-Pb age indicates is probably Triassic
Trqd
Stikine Suite, Tally Ho Leucogabbro, Little River Batholith, Friday Creek diorite.  Coarse-grained, foliated, gabbroic hornblende orthogneiss; hornblende-biotite granite and granodiorite; foliated, fine- to medium-grained hornblende quartz diorite to dio
Trsg
Gabbro, diabase, and metagabbro, Late Triassic(?)
Trgb
Cumulate mafic and ultramafic rocks, Late Triassic(?) [Nikolai related]
Stikine terrane hornblende diorite and gabbro
Trsgb
Stikine terrane hornblende ultramafic rocks
Trsum
Carbonatite
Trc
Quartz diorite and lesser granodiorite and diorite, Alexander
Tradi
Schistose metasedimentary and metavolcanic rocks, Late Triassic
Trnm
Biotite-hornblende syenite-monzonite gniess
Trmg
Nikolai Greenstone, Late and/or Middle Triassic
Nikolai Greenstone - subaerial basalt flows member, Late Triassic
Nikolai Greenstone, Late and/or Middle Triassic, pillow basalt member
Basalt, diabase, and subordinate sedimentary rocks, Late Triassic, Karnian and Norian
Trn?
Cottonwood Bay Greenstone
Trcb
Basaltic metavolcanic rocks, Late Triassic,
Metavolcanic, metavolcaniclastic, and subordinate metasedimentary rocks, Late Triassic, late Norian,
Metabasalt and slate, Late Triassic
Galena Suite, massive, medium-grained hornblende diorite and gabbro sills; serpentinized greenstone sills
Trg
Hyd Group, undivided
Trhg
Hyd Group, including Chapin Peak Formation marine volcanic rocks and subordinate calcareous sedimentary rocks
Trhv
Hyd Group breccia
Trhb
Hyd Group limestone and dolomite
Trhl
Hyd Group felsic volcanic rocks, includes Puppets Formation on Gravina Island
Trhf
Hyd Group argillite
Trha
Stuhini Group, pillow basalt, volcanic sandstone and mudstone
Trsb
Stuhini Group, tuffaceous sandstone, volcanic wacke, tuff, mudstone, and minor conglomerate
Trmss
Mafic metavolcanic rocks, metamorphosed intermediate to mafic volcanic flows, pillowed flows, tuff, and agglomerate, with subordinate pelitic and semipelitic flysch. (Alava)
Trmv
Perseverance Slate and related Alava slate and phyllite
Trclt
Pinnacle Peak phyllite and phyllite of Rodman Bay
Trpp
Volcaniclastic rocks of Rodman Bay and sedimentary and volcanic rocks of Nakwasina Sound
Marble of Nakwasina Sound and limestone blocks in Freeburn Assemblage
Trml
Whitestripe Marble
Trw
Whitestripe Marble?
Trw?
Orthogniess
Trgn
Marble
Trmb
Kelp Bay Group, undivided
Trkg
Cretaceous through Triassic sedimentary rocks, undivided
Mzsu
Togiak-Tikchik Complex, formerly Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks
MzPzt
Lava flows in undivided Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks
MzPztl
Limestone in undivided Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks
TrPls
Volcanic breccia in undivided Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks
MzPztv
Christian River and Porcupine River sequences
JPc
Arctic Foothills Assemblage
KMaf
Minto unit, Wilber Creek flysch and Wolverine quartzite, undivided
Shale and sandstone, may correspond in part to Christian River and Porcupine River sequences
Intrusive rocks, quartz diorite and diorite
Mzi
Basaltic rocks
Ktrv
Mafic rocks, diorite and gabbro
Mzm
Ultramafic and associated rocks
Mzum
Ultramafic and mafic igneous rocks along Broxson Gulch thrust
Metasedimentary and metavolcanic rocks, (Correlated with Kakhonak Complex)
JPzk
Windy, quartz-chlorite-sericite schist, epidote-actinolite greenschist, quartzite, slate, quartz-mica schist, limestone
KPzw
Metavolcanic and metasedimentary rocks, (Correlated with Kakhonak Complex)
Semischist
Mzs
Quartzofeldspathic banded biotite gneiss and hornblende gneiss
Mzgn
Tikchik terrane melange
Igneous and sedimentary rocks of the Maiyumerak Mountains
MzDm
Metamorphosed mafic rocks, metatonalite and serpentinite, Kugruk Fault Zone
MzPzmk
Etivluk Group, undivided:  Includes Siksikpuk, Otuk Formations and underlying Immaitchiak Chert and consists of maroon, red, green, gray, black, and variegated chert and siliceous argillite, minor maroon calcareous siltstone and argillite, and rare maroo
Pzeg
Rocks of the Kivivik Creek sequence
JDk
Sandstone, shale, argillaceous limestone, limestone, dolostone, mudstone, chert and siltstone in north-central Wiseman quadrangle.  The unit conformably overlies the Kanayut Conglomerate of the Endicott Group. Consists of Kayak Shale of the Endicott Grou
JCs
Sedimentary rocks:  Includes: Shublik and Otuk Formations - Black shale, siltstone, limestone, and black chert; Sadlerochit Group - black shale, and bluff calcareous siltstone; Siksikpuk Formation - black, red, and green shale and siltstone; buff calcare
TrCs
Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents
KPs
Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks
KPsv
Dark gray, phyllitic, siliceous to carbonaceous argillite and shale, subordinate chert-rich conglomerate, chert, volcaniclastic rocks, highly calcareous argillite or limestone, and minor intrusive rocks.
TrPs
Formerly Rampart Group, sedimentary rocks, now considered Tozitna -- Triassic to Mississippian
TrMts
Rampart Group, sedimentary rocks, Triassic to Mississippian
TrMis
Low-grade metasedimentary rocks of the Seventymile/Slide Mountain terrane
MzPzs
Chert and argillite, Goodnews terrane
MzPzc
Volcanic and sedimentary rocks of Talkeetna superterrane, Triassic and Paleozoic [Only in cross-sections]
TrPzvs
Lower unit Glenn shale and Tahkandit Limestone, undivided
TrPgt
Sedimentary rocks of the Tatonduk area, undivided.  Ranges through entire Paleozoic, diverse lithologies, many formal units lumped
Pzta
Flysch-like sedimentary rocks
TrPas
Turbiditic volcaniclastic sandstone and argillite, Goodnews terrane
MzPzv
Arkosic sandstone and slate, Goodnews terrane
Marine sandstone, shale, limestone and conglomerate
Pcs
White-weathering chert or silicified limestone
MzPzct
Melange and argillaceous melange, Goodnews terrane
MzPzm
Andesitic or basaltic flows and locally fragmental rocks, subordinate clastic strata and carbonate, and the metamorphosed and deformed equivalents
KPv
Chulitna Sequence -- volcanic and sedimentary rocks, Early Triassic to late Paleozoic
TrDv
Chert, volcanic rocks, metasandstone, and limestone
TrMica
Black slate, chert, red and green argillite
TrMca
Mafic and ultramafic rocks, undivided (Jurassic? and/or Paleozoic?)
JPztm
Volcanic rocks, unknown age
MzPzi
Rampart Group, igneous rocks, Triassic to Mississippian
JTrtmu
Mafic and sedimentary rocks; pillow basalt, chert, and minor argillite
TrMtsu
Mafic, ultramafic, and sedimentary rocks of the Tozitna sequence, undivided (Jurassic to Mississippian)
JMtu
Rhyolite and dacite of Tozitna terrane
JMvr
Basalt and diabase, Permian to Jurassic
JMab
Melange between Angayucham-Tozitna and Arctic Alaska and Ruby terranes
MzPzl
Ultramafic rocks, Permian to Jurassic
Jaum
Undivided intrusive rocks, Mesozoic or Paleozoic
Granodiorite of Rainbow Mountain
MzPzg
Gabbro and quartz diorite, Mesozoic and/or Paleozoic
Undivided dunite and serpentinite, Mesozoic or Paleozoic
MzZum
Metamorphic rocks, undivided
MzPzu
Fine- to medium-grained mylonitic metasedimentary rocks, calc-schist, marble, quartz-mica schist
Schist and amphibolite, Late Cretaceous or older
Quartz-mica schist, calc-schist, and amphibolite, Late Jurassic or older
Mzpca
Schist, quartzite, and amphibolite, Triassic(?) [See also MH002 units mig and mgsh.  Lithologically similar rocks on strike in Healy quad have Penn to Trias conodonts, see unit Trcs?] {Mzmm}
Raven Creek Hill unit, metasedimentary gneiss, mica schist, phyllite..., Mesozoic or Paleozoic
TPza
Black argillite and other low-grade metasedimentary rocks along the Tintina Fault zone
MzPza
Argillite and metagraywacke, Late Jurassic or older
Argillite and quartzite.  Deleted unit in revision.
MzPzaq
Silicified tuff, white, light-tan, light-gray silica rock
Metasedimentary, metavolcanic, and sedimentary rocks of the Doonerak area (Other maps show as NSA 5565 and 6685)
TrPzd
Phyllite, Late Jurassic or older  [see Pzp, #5540]
Phyllite, amphibolite, greenstone, and diorite, Mesozoic or Paleozoic Lumped with Vrain
KJvr?
Chloritic phyllite, Goodnews terrane
MzPzp
Kakhonak Complex (Jurassic, Triassic and older?)
JPk
Metachert and phyllitic quartzite, Goodnews terrane
Banded dark-green, gray, and red eclogite and banded amphibolite.
JPe
Melange-like assemblage of mafic volcanic rocks, chert, mudstone, argillite, graywacke and limestone
KMu
Metabasalt and minor metachert
Jgs
MzPzb
Metabasite, Arctic Alaska terrane
Metabasite, Ruby terrane
Metabasite, Seward terrane
Stikine, recrystallized volcanic and sedimentary rocks
Uranatina Metaplutonic Complex, Jurassic(?), Layered quartz gabbro; Amphibolite and orthogneiss
JPaur
Metamorphosed igneous rocks, post-Carboniferous
MzPmi
Porcupine slate of southeast Alaska (uPzs, SK004)
TrDps
Schist of lower grade metavolcanic and metasedimentary rocks unit
MzPzq
Greenschist of lower grade metavolcanic and metasedimentary rocks unit
Mainly regionally metamorphosed or otherwise recrystallized or altered diorite, quartz diorite, and gabbro
MzPzmi
Alava sequence, undivided Permian and Triassic; correlated with the Perserverance Group (Middle and Late Triassic metased), Gastineau Group (Permian metavolcanic), and Unnamed Permian and/or older strata (Phyllite) of Gehrels and others (1992)
TrPzms
Alava sequence, metasedimentary rocks, correlated with the Perserverance Group (Middle and Late Triassic metased), Gastineau Group (Permian metavolcanic), and Unnamed Permian and/or older strata (Phyllite) of Gehrels and others (1992)
TrPsa
Alava sequence, metavolcanic rocks, derived primarily from submarine andesitic or basaltic lava flows, tuff, and agglomerate, correlated with the Perserverance Group (Middle and Late Triassic metased), Gastineau Group (Permian metavolcanic), and Unnamed
TrPv
Metamorphosed granitic plutonic rocks (orthogneiss)
MzZog
Paleozoic orthogneiss
Ophiolitic metamorphosed mafic rocks
MzPzo
Metamorphosed mafic igneous rocks
Pzrmi
Serpentinite, Mesozoic and/or Paleozoic
Metabasic and metafelsic volcanic rocks, undifferentiated.
MzZfm
Dillinger stratigraphic sequence, undivided; sedimentary rocks of Dillinger River, lime mudstone and shale, etc, Paleozoic
DCd
Massively bedded limestone, dolomite, and schist, Paleozoic, Seward terrane
Pzld
Undivided limestone and schist, Paleozoic
Pzls
Limestone and quartz-mica schist, Paleozoic, Seward terrane
Pzls2
Skolai Group undivided; also Skolai Group, greenstone, Early Permian to Middle Pennsylvanian
PPas
Limestone and chert
Pzlc
Undivided sedimentary rocks of the Venetie terrane, Permian to Devonian?
PDs
Carbonates, early Paleozoic
Pzrm
Limestone?, Permian-Pennsylvanian?
PPl
Quartzite and argillite, Late Paleozoic
Pzqa
Chert and argillite, Late Paleozoic
Pzca
Clastic rocks, undivided, Paleozoic(?)
Pzsu
Schistose sandstone, Paleozoic(?)
Pzss
Mystic and Dillinger stratigraphic sequences, undivided (Triassic to Ordovician), undivided sedimentary rocks, typically flysoid
JCmd
Mystic stratigraphic sequence, undivided (Triassic to Devonian)
JDm
Lower Paleozoic black chert.  Derived from 1969-1970 Condon and Hoare field notes
Pzec
Volcanic and sedimentary rocks, middle or late Paleozoic
Pzvs
Pillow basalt, middle or late Paleozoic [see 2890, 4215, all thought to be same unit]
Gabbro and leucogabbro, Late Paleozoic, Permian to Pennsylvanian
Pagb
Ultramafic and mafic rocks and greenstone
Pzug
Eclogite see Chatanika unit [5510], which includes eclogite in Livengood quad
Pze
Undivided Paleozoic metamorphic rocks:  quartzite, semischist, and amphibolite
Pzkm
Chatanika unit, allochthonous garnet-bearing qtz-bio-mus schist and quartzite, Paleozoic
Metamorphosed sedimentary, volcanic, and intrusive rocks, undivided
Pzsqm
Metamorphosed volcanic rocks, Kah Shakes sequence
Pzmv
Reindeer Hills complex of altered carbonate rocks, schist and quartzite, and shallow intrusive rocks
MzPzr
Marble, Paleozoic
Dm
Pzm
Greenschist and other metamorphic rocks, undivided
Pzgs
Calcareous siltstone and sandstone and phyllite
TrMtqp
Phyllite, calcareous phyllite, and marble
PMpc
Meta-hornblende andesite, Late Paleozoic(?); Amphibolite and quartz diorite, Middle to Early Jurassic metamorphic age
JPam
Porcupine River sequence -- Argillite
Pzpr
Phyllite of Arctic Alaska terrane
Pzp
Phyllite of Ruby terrane
Metagraywacke of Arctic Alaska and Ruby terrane
Pzg
Carbonate rocks of phyllite belt
Pzpc
Phyllite and argillite, Grantley Harbor Fault Zone
Pzpa
Greenish-gray siliceous slate, quartzite, chert, and greenstone, Perm-Miss.
PDms
Cataclastic rocks, Totatlanika Schist
MDtm
Metamorphic and sedimentary rocks, black and greenish-gray siliceous slate, chert siltstone, debris flows, greenstone, Permian to Devonian(?)
Slana Spur Formation, marine calcareous and noncalcareous volcaniclastic rocks, Early Permian-Middle Penn.
Pat
Slana Spur Formation, calcareous volcaniclastic rocks, Early Permian-Middle Penn.
Metamorphosed Skolai Group
PPast
Siliceous metasedimentary and metavolcanic rocks
MzPzsv
Undivided tectonized rocks (Melange?)
Slana Spur Formation, volcaniclastic rocks, Early Permian-Middle Penn. [equivalent to part of Station Creek Fm.]
Pzv
Volcanic rocks, volcanic sandstone, cherty argillite, quartzite, and tuff
Pzvc
Windy terrane volcanic rocks
Greenstone
JPzsgs
Nome Complex metagabbro and metasedimentary rocks
Pzng
Nome Complex marble
Pznm
Nome Complex dolostone, undivided
Pznd
Keevy Peak Formation, schist, quartzite, and phyllite, early Paleozoic
Pzk
Pzk?
Calcareous and phyllitic rocks
Pzkcp
Spruce Creek sequence of Kantishna Hills from Bundtzen thesis
Pzsc
Big Delta Gneiss dome
PzZyg
Phyllite
PzZp
Paragneiss characterized by rusty brown weathering pelitic paragneiss and schist
PzZbg
Polymictic conglomerate in a schistose matrix
PzZbc
Metavolcanic hornblende schist and gniess
PzZhg
Marble and interbedded schist
PzZmb
Metamorphic complex of Gulkana River, amphibolite
Metavolcanic rocks of early Paleozoic age, derived primarily from submarine andesitic or basaltic lava flows, tuff, and agglomerate
Pza
Portland Peninsula gneiss and marble
Pzgm
Biotite schist and gneiss, with subordinate felsic to mafic metavolcanic rocks, conglomerate containing quartzite, volcanic rocks, and marble. Includes Port Houghton assemblage in Tracy Arm and Port Houghton areas
Pzbs
Four Winds Complex orthogniess
Pzog
Four Winds Complex, undivided
Pzfw
Four Winds Complex, metavolcanic rocks and metabasite
Pzfwv
Sedimentary rocks, undivided, Permian.  Sandstone, siltstone, and quartzite [NOTE: may be equivalent to NSA 5715, Echooka Formation and 5735, Tahkandit Limestone]
Psu
Sadlerochit Group, Echooka Formation, undivided [NOTE: may be equivalent to NSA 5710, Permian sedimentary rocks in Charley River quadrangle and 5735, Tahkandit Limestone]
Pef
Sadlerochit Group, Permian limestone, Joe Creek unit (TrPsl, TB003)
Psl
Argillite and limestone
Pal
Shale and chert, Strangle Woman and Christian River sequences
Psc
Unnamed Permian limestone
Pls
Tahkandit Limestone, massive bioclastic limestone [NOTE: may be equivalent to NSA 5710, Permian sedimentary rocks in Charley River quadrangle and 5715, Echooka Formation]
Ptl
Step Conglomerate, Permian, chert and quartzite clast pebble- and cobble conglomerate
Tahkandit Limestone, massive bioclastic limestone and Step Conglomerate, Permian, chert and quartzite clast pebble- and cobble conglomerate, undivided
Pstl
Argillite, sandstone, sandy limestone, and minor conglomerate
Ps
Graywacke, conglomerate, and mudstone, Permian(?)
Permian volcaniclastic rocks
Pvs
Hasen Creek Formation
Ph
Limestone of the Hasen Creek Formation
Phls
Limestone of the Eagle Creek Formation
Pels
Fantasque, grey to black chert in medium to very thick beds separated by thin beds of shale; grey sandstone and mudstone
Pf
Pybus Formation, limestone and dolostone
Pp
Halleck Formation calcareous siltstone to conglomerate
Phl
Sitth-gha-ee Peak Formation Limestone (Psl, SK010)
Psfl
Permian(?) volcanic rocks (agglomerate) from Hanson (1957)
Pv
Greenstone and chert
Shallow-level stocks, dikes, sills and small plutons, Early Permian?
Pmi
Monzonitic-granitic complex
Pmgi
Ahtell pluton
PPasy
Diorite complex, diorite, granodiorite, and altered diabase and gabbronorite
PPad
Strelna Metamorphic complex, low- to medium-grade greenschist and amphibolite, Late Jurassic or older
Cannery Formation, metasedimentary and metavolcanic rocks, undivided
PDcvs
Cannery Formation metavolcanic and volcaniclastic rocks
PDcv
Cannery Formation, carbonaceous facies, slate and black phyllite
PDcs
Cannery Formation, massive, light- to medium gray and black argillite and marble
PDcm
Sitth-gha-ee Peak Formation greenstone, greenschist, and phyllite
Psfv
Sitth-gha-ee Peak Formation phyllite, slate, metagraywacke
Psfp
Mankomen Group, undivided [equivalent stratigraphically to Skolai Group]
Pmg
Eagle Creek Formation, Early Permian, marine argillite and limestone, lower greenschist facies [equivalent to Hasen Creek Fm.]
Pe
Pm
Skolai Group, marble, Early Permian to Middle Pennsylvanian
JPzmb
Quartzite, phyllite, micaceous quartzite, marble, inferred Permian age
Pq
Metasiliciclastic rocks and minor carbonate rocks
Klondike Schist, poorly understood assemblage of metamorphosed pelitic/volcanic rocks and minor marble.
Pks
Klondike Schist, marble and dolomite
Pksm
Serpentinized ultramafic
JPsu
Pennsylvanian, Mississippian, Devonian, light gray limestone
PDl
Sheep Creek Formation and correlative largely siliciclastic units of the Mystic stratigraphic sequence (Permian to Devonian); Conglomerate of Mount Dall, Middle Pennsylvanian
PDsc
Calico Bluff  Formation
PaMcb
Calico Bluff and Ford Lake Shale, undivided
PaDcb
Crinoidal limestone
Klawock Formation, clastic
Pak
Lisburne Group, Wahoo Limestone, uppermost unit in eastern Alaska
Palw
Lisburne Group Wahoo and Alapah Limestone units, undivided.  Northeastern Alaska (PaMl, DP002; DP004; ML002; PaMlu, AC002; PS002; Cl, TB002)
PaMl
Chert and limestone, chiefly chert, Penn and Miss
Lisburne Group, Alapah Limestone (Ma, ML006)
PaMla
Lisburne Group, Akmalik Chert
PaMlc
Nuka Formation
PMn
Saginaw Bay Formation, unit to be abandoned
Pasb
Granitic plutons south of Denali Fault
PPagi
Station Creek Formation andesitic volcanic rocks (correlated with Tetelna volcanics), Early Permian? and Pennsylvanian
Massive, dark weathering, coarse to medium grained, hornblendite-gabbro (Boswell)
Paum
Lisburne Group, Kuna Formation, also includes black carbonaceous metachert, quartzite, and siliceous or calcareous phyllite, commonly distinctive silvery blue (phosphatic) bloom on weathered surfaces
Mlku
Tetelna Volcanics, volcanic flows, etc., lower greenschist facies
Metamorphosed intermediate igneous rocks
Pzi
Endicott Group, undivided.  Unit includes the Hunt Fork Shale, Noatak Sandstone, Kanayut Conglomerate, Kekiktuk Conglomerate, and Kayak Shale.
MDe
Endicott Group, Kekiktuk Conglomerate, and Kayak Shale and Lisburne Group, undivided.
Mkkl
Lisburne Group, Tupik Formation, uppermost unit in western Alaska
Mlt
Lisburne Group, Kogruk Formation (uppermost?) Fossiliferous limestone, Miss.
Mlkg
Lisburne Group, undivided
Lisburne Group, informal lower part
Mlgl
Lisburne Group, Nasorak Formation
Mlgn
Lisburne Group and Kayak Shale, undivided
Mlk
Endicott Group, Kayak Shale
Mk
Endicott Group, Interlayered dark gray to black phyllite and calcareous phyllite.  Unit is more siliceous than either Early Mississippian Kayak Shale or Late Devonian Hunt Fork Shale although it is lithologically similar to both.  At present, these rocks
MDkh
Younger limestones of Mystic stratigraphic sequence (Mississippian)
PMl
Iyoukeen and Peratrovich Formations, limestone, black chert, and black shale
Mls
Endicott Group, Kekiktuk conglomerate (Mke, AR002; DP004; ML002; Mke, Mke?, SP002) [Overprint symbol 14]
Mke
Endicott Group, Kayak Shale and Kekiktuk Conglomerate
Mkk
Endicott Group, Kekiktuk or Kanayut Conglomerate
Mkkc
Endicott Group, Kayak Shale and Kanayut Conglomerate
MDk
Kekiktuk Conglomerate and Ulungarat Formation, undivided (Mkk/Du, TB003)
MDku
Lisburne Group, Utukok Formation - Limestone, Mississippian to Devonian
Mlut
Chert, Mississippian
Mc
Ford Lake Shale, laminated siliceous shale and chert
MDfl
Endicott Group, Kurupa Sandstone
Mks
Limestone and tuff
Volcanic rocks and sills associated with Lisburne Group
Mv
Volcanic rocks and sills associated with Kekiktuk Conglomerate
Mkkv
Massive and pillowed basalt and other volcanic rocks
MDv
Pelly Mountains Suite, massive, medium to fine grained equigranular syenite; gradational to trachyte; intrusive equivalent to felsic volcanics of the Earn assemblage
Mpm
Totatlanika Schist, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian,
MDt
Totatlanika Schist?, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian,
MDt?
Augen gneiss and schist, Mississipian or Devonian intrusion age, Yukon-Tanana terrane
MDyao
Augen gneiss and schist, Mississipian or Devonian intrusion age, Ruby terrane
MDrao
Augen gneiss and schist, Mississipian or Devonian intrusion age, Arctic Alaska terrane
MDaao
Globe quartzite unit  Similar to Keno Hill Quartzite in Yukon
Mgq
Carbonaceous phyllite
MDcp
Marble and metabasaltic dikes, Goodnews terrane
MDm
Algal boundstone in SW Alaska
Sab
Thin-bedded limestone
DSmdl
Point Augusta Formation limestone horizon within turbidite deposits
Stl
Heceta Limestone, reefoid limestone
Polymictic conglomerate and olistostrome deposits associated with Silurian turbibidites and reefs
Stpc
Silurian turbidite deposits including the Bay of Pillars Formation, Point Augusta and Tidal Formation and related units
Stg
Paradise Fork Formation and correlative units
Spf
Middle Silurian limestone
Sml
Point Augusta Formation argillite and chert
Sta
Staney Creek sandstone, limestone and dolostone, shallow water facies rocks
DSs
Micaceous calc-sandstone
Ss
Terra Cotta Mountains sandstone, sandstone and graptolitic shale
Stc
Nome Complex, dolostone
Snd
Amy Creek unit, siliceous dolomite, chert, and basaltic greenstone, minor limestone, shale..., Silurian(?) to Late Proterozoic
SZa
Dolomite and argillite
SZa?
Siltstone and phyllite
SCb
Black phyllite and metalimestone
Spl
Descon Formation, undivided sedimentary and volcanic rocks
SOdu
Descon Formation graywacke turbidites
SOt
Descon Formation limestone
SOl
Descon Formation conglomerate
SOdcg
Descon Formation fine-grained sedimentary rocks [see also NSA 6820]
SOds
Iviagik Group, undivided
SOig
Descon Formation - Dacitic to rhyolitic volcanic rocks
SOdr
Descon Formation, andesite and felsite
SOdv
Descon Formation, basaltic to andesitic volcanic rocks
SOdvm
Volcanic and sedimentary rocks, Doonerak antiform
SCvs
St
Silurian volcanic rocks
Sv
Ultramafic rocks, southeast Alaska
Sum
Medium-grained biotite syenite and granite
SOgu
Metamorphosed extrusive, intrusive, and sedimentary rocks, undivided
SOsv
Metamorphosed intermediate and mafic plutonic rocks
SOmi
Marble and subordinate metavolcanic and metasediemntary phyllite and schist
SOm
Fine-grained low-grade metamorphic rocks of the Descon Formation and Wales Group [see also NSA 6693]
SOmd
Greenstone and greenschist, possible Descon association
SOgs
Metamorphosed and hornfelsed Descon Formation schist and semischist
SOdsv
Marble, metamorphosed Decon Formation limestone
SOdm
Metasedimentary rocks of Jesse Mountain,  fine grained, phyllitic to schistose, gray-weathering meta-argillite, black-weathering metaquartzite, marble, and brown weathering impure marble
SOj
Endicott Group, Noatak Sandstone and phyllite, carbonate and clastic rocks of the Nakolik River, shale,
Dnu
Southeast Alaska undivided Devonian rocks
Du
Phyllite, slate, silicious siltstone, and argillite
Dp
Ruby marble [Dubious age call?, reported in source as Paleozoic?]
Troublesome unit, rhythmically interbedded cherty argillite to chert and thin beds of slate, Devonian(?), also McCann Hill Chert
Dtr
Shale and chert of Mystic stratigraphic sequence (Devonian)
Dsc
Endicott Group, Kanayut conglomerate and Noatak sandstone
MDkn
Endicott Group, Kanayut Conglomerate
Dky
Endicott Group, Kanayut Conglomerate - Quartz arenite and quartz wacke member
Dkyq
Endicott Group, Kanayut Conglomerate - Stuver Member nonmarine shale and quartzite
Dkys
Endicott Group, Kanayut Conglomerate, middle member
Dkym
Endicott Group, Kanayut Conglomerate - lower member, nonmarine shale
Dkyl
Quail unit, conglomerate, phyllite, calc-phyllite, siltstone, and sandstone, Late Devonian(?), also Nation River Formation of Charley River quad.
Dnr
Calcareous clastic rocks; also Devonian sandstone and shale
Dnr?
Quartz wacke
Dnr2?
Endicott Group, Hunt Fork Shale
Dhf
Wacke members of Hunt Fork Shale and Beaucoup Formation, undivided (Dbw, AC002; Dbw, Dhbw, PS002; Dbcp, CH006)
Dhbw
Beaucoup Formation, carbonaceous, siliceous, and calcareous sedimentary rocks and felsic volcanic rocks that grade downward and to the southwest into Skajit Limestone.  Laterally equivalent to Whiteface Mountain and Ambler volcanic and sedimentary rocks
Dbc
Port Refugio Formation
Dpr
Late Devonian thin-bedded limestone
Dtl
Limestone, Late Devonian
DSl
Carbonate rocks of the lower part of the Mystic stratigraphic sequence (Devonian and Silurian)
DSml
Wadleigh Limestone
Dwl
Black Cap Limestone and Cedar Cove limestone member
Dbcl
Dark-greenish-gray fine-grained impure graywacke
Dg
Chloritic siltstone and conglomerate (Dc, AR002; Dqq, CH002) [Overprint symbol 13]
Dcs
Cedar Cove Formation
Drl
Karheen Formation and related rocks, conglomerate, Lower Devonian
Dkf
Kassan Limestone, part of Karheen
Dkfl
Karheen Formation turbidite facies rocks
Dkft
Cascaden Ridge, Beaver Bend combined correlative units, shale, siltstone, sandstone, conglomerate, and minor limestone, Middle Devonian
Dcb
Ulungarat Formation, a coarsening- and thickening-upward, shallow-marine to nonmarine fluvial sequence.  Base of the Ellesmerian sequence, Middle to Upper Devonian
Limestone (Late Devonian to mid-Silurian)
Schwatka unit -- Limestone and Ogilvie Formation of Clough (1980), Middle and Early Dev.
Ds
Beaucoup Formation, dark gray to orange weathering limestone (see also 7360)
DSol
Barren Ridge limestone, calcarenite, calcareous siltstone, and limestone
DSca
Rendu Formation and related units, argillite and silty limestone turbidite
DSr
Lost Creek unit, lime mudstone and wackestone, Devonian and Silurian
Dlc
Limestone, dolomite, greenstone, and chert
DSls?
Laminated limestone, sandstone, and siltstone
DSls
Whirlwind Creek Formation and unnamed correlative units (Late Devonian, Frasnian through mid-Silurian, Wenlockian), reefy limestone and dolomite
DSwc
Conglomerate of the Kennel Creek Limestone
Dcg
Berg Mountain Formation Limestone.  Associated with volcanic rocks of Berg Mountain Formation (NSA = 7022).  Also Kennel Creek Limestone
DSbl
Tolovana Limestone, Middle Devonian to Early(?) Silurian,
DSt
Limestone, greenstone, and schist
DSt?
Older strata of the Porcupine River sequence, undivided
DCpu
Older strata of the Porcupine River sequence, quartzite; might be eguivalent to St. Cyr in eastern Yukon
Beaucoup Formation, Ferriginuous and Calcareous schist
Dbf
Beaucoup Formation, including volcanic rocks or volcanic rock clasts
Dbv
McCann Hill Chert
Dmh
McCann Hill Chert and Road River Formation, undivided
DOmr
McCann Hill Chert and Olgilvie Formation, undivided
Dmo
Baird Group; Massive light gray reefoid limestone and dolomite with local thin interbeds of calcareous phyllite
DSb
Baird Group, Kugururok Formation (limestone)
Dbk
Baird Group, Eli Limestone
Dbe
Baird Group, Skajit Limestone
DSbs
Road River Formation, Hillard Limestone and other units, undivided
DCru
Road River Formation
DOrr
Thin-bedded to massive, fine-grained, limestone with local interbedded tuff and mafic volcanic rocks
DOl
Basaltic and andesitic flows, tuff, breccia, and volcanic conglomerate altered to greenstone, interbedded in Hunt Fork Shale
Dvt
Schwatka unit, mafic volcanic rocks, Middle and Early Devonian
Dsv
Woodchopper Volcanics, amygdaloidal basalt, pillow basalt, ..., equivalent to Schwatka unit?
Dwv
Freshwater Bay Formation and Kasaan Island Volcanics, Basalt and rhyolite with subordinate sedimentary rocks, Middle to Late Devonian
Dfb
Basalt and rhyolite on Prince of Wales and Kasaan Islands and andesite associated with Black Cap Limestone
Dv
Berg Mountain Formation, largely mafic volcanic rocks
DSv
Karheen Formation volcanic and hypabyssal rocks
Dcv
Old Crow Suite, undivided
Dgr
Old Crow Suite granitic rocks:  medium to coarsely crystalline leucocratic biotite granite, Old Crow, Schaeffer, Sedgwick, Ammerman, and Fitton granites
Old Crow Suite granitic rocks:  leucocratic syenite to hornblende nepheline syenite, Dave Lord syenodiorite
Dsr
Syenite, Chichagof Island, southeast Alaska, Alexander terrane
Dsy
Quartz diorite, Prince of Wales Island, southeast Alaska
Dqd
Diorite-gabbro
Ddg
Metamorphic rocks, undivided.  Includes carbonate rocks; quartzite and slate.
Dms
Gambier Bay Formation, undivided, sedimentary and volcanic rocks, marble and recrystallized limestone, phyllite and semischist, and tuffaceous marlstone, pillow breccia, volcanic conglomerate, aquagene tuff, subordinate basaltic to andesitic pillow flows
Dgu
Gambier Bay Formation, sedimentary and volcanic rocks, marble and recrystallized limestone, phyllite and semischist, and tuffaceous marlstone, pillow breccia, volcanic conglomerate, aquagene tuff, subordinate basaltic to andesitic pillow flows
Dgv
Gambier Bay Formation and Retreat Group Marble
Dmg
Gambier Bay Formation, pyrite-bearing garnet-chlorite-amphibole-quartz-feldspar schist and gneiss
Dgg
Gambier Bay Formation, homogeneous layered garnet-chlorite-quartz-feldspar schist and semischist ; with minor dark gray phyllite and chlorite-actinolite schist
Dgs
Gambier Bay Formation, dark gray locally pyritic and graphitic semischist and phyllite; some quartz-rich semischist and Retreat Group; black siliceous phyllite on Admiralty Island
Dgp
Nanook Limestone, Thin- to thick-bedded limestone, silicified limestone, and vuggy dolomite with minor amounts of siltstone and shale.  Includes Mount Copleston Limestone which is now Devonian part of unit, Nanook now considered Ordovician and older.
DZnl
Marble of the Schist Belt
Pzms
Kaskawulsh Group of Kindle, mainly marble
Dkg
Endicott Group, Hunt Fork Shale, metamorphosed
Dhfm
Phyllite and metaconglomerate
Dpmc
Thin bedded black, siliceous, carbonaceous phyllite and impure chert
Dbs
Fine-grained schistose volcanic rocks and phyllite, Devonian extrusion age,
Dyv
Yanert Fork sequence, thick sequence of marine metasedimentary and metavolcanic rocks, Late Devonian
Dy
Medium-grained granitic gneiss, Devonian intrusion age
Orthogneiss within Nome Complex
Dgn
Ambler metavolcanic and lesser metasedimentary rocks
Dav
Very light gray to brownish red weathering resistant schistose felsic volcanic rocks, Ambler sequence?
Davf
Very light gray to brownish red weathering resistant schistose felsic volcanic rocks, not Ambler sequence
Dvf
Metamorphosed sills, dikes, and flows of andesite to rhyolite composition
Dvr
Metasedimentary rocks, Late Devonian
Calcareous schist
Pzcs
Metabasalt and subordinate metasedimentary rocks, Late Devonian
Serpentinite, basalt, chert and gabbro, Late Devonian
Dmgs
Metagabbro, Late Devonian(?)
Dmgb
Light-brown weathering calcareous schist interbedded with gray quartz-mica schist and marble.  Brooks Range schist belt.
Pzsb
Orange weathering chloritic marble Brooks Range schist belt (see also 6950, 6951)
DZsm
Schist and paragneiss, Arrigetch-Igikpak thermal high
DZsg
Pelitic, calcareous, and quartz-feldspar metasedimentary rocks, Devonian or older,
DPzmp
Fine-grained, schistose metasedimentary and metavolcanic rocks, Devonian or older, [Evidence suggests that this unit is most likely Triassic, at least in its western exposures and correlates with similar units all along the north side of the Denali, unit
Dys
Metasedimentary and metavolcanic rocks of Tukpahlearik Creek, undivided
DOtu
Carbonaceous quartzite and quartz conglomerate of Tukpahlearik Creek
DOtq
Marble and quartz schist of Tukpuhlearik Creek
DOtmq
Pelitic schist and greenstone of Tukpaklearik Creek
DOtpg
Pelitic schists of Tukpaklearik Creek
DOtp
Nome Complex, undivided
DZng
Nome Complex dolostone, metalimestone, and marble
Dnd
Nome Complex, pelitic, calcareous, and graphitic schist
DSns
Nome Complex, pelitic schist
Dnps
Nome Complex, black metalimestone and marble
DOnb
Black marble, Nome Complex
DCbm
Nome Complex, Calcareous schist of Kwinnik Mountain
DCnk
Nome Complex, mixed marble, graphitic metaquartzite, and schist
DOnx
Nome Complex, mixed marble, graphitic metaquartzite, and schist (overlay)
DOnx1
Carbonate rocks
OCc
Tcherskidium-bearing limestone
Olss
Brown and gray 'chippy' shale, silty shale and silicified limestone
Os
Novi Mountain and Telsitna Formations, and unnamed correlative units, massive dolomite and limestone, Late to Middle Ordovician
Ont
Jones Ridge Limestone, massive oolitic, typically silicified limestone
OCjr
Hillard Limestone
OChl
Limestone and dolomitic limestone
SOdl
Nome Complex, pink to light gray weathering, gray to tan fine-grained dolostone with distinct color mottling
Od
Limestone and shale
Oshd
Argillaceous limestone and limestone (Oal, TE002; TE004)
Qal
Algal boundstone and lime mudstone
Oab
OZl
Lime mudstone
Ols
Sandstone, siltstone, and limestone, York terrane (OZt, TE004; SEWPEN)
OZp
Slate of the York region, slightly to moderately metamorphosed graphitic siltite, slate, graywacke, and calcareous siltite
OZt
Post River Sandstone and Lyman Hills Formations and correlative units, silty limestone and siltstone, Early Ordovician
SCpl
Chert and phyllite, Telida sub-terrane of Munchumina terrane
Oc
Franklin Mountain, Dolomite succession with local basal quartzite and red bed member
OCfm
Broken Skull, Dolomite succession with local basal quartzite and red bed member
OCbs
Fossil Creek Volcanics, undivided -- Alkali basalt, agglomerate, and volcaniclastic conglomerate
Ofc
Andesitic to basaltic volcaniclastic rocks and local tuffaceous phyllite, gabbro, and diabase, and black phyllite
OCv
Granodiorite on Prince of Wales Island
Ogd
Hornblende gabbro and subordinate hornblende pyroxenite and hornblendite
Ogb
Interlayered pure and impure marble, quartz-graphite schist, and lesser pelite, calc-schist, and mafic schist
OCx
Predominantly marble and quartz-graphite schist above biotite grade; upgraded equivalent of mixed unit [OCx]
OCxh
Ordovician chert, including Livengood Dome Chert, chert, siliceous slate and rare greenstone and limestone, Late Ordovician (protolith)
Och
Limestone marker bed within Livengood Dome Chert
Oldl
Casadepaga schist
Ocs
Calcareous and mafic schist
Ocsh
Older carbonate rocks of the Nanielik antiform,
Ordovician carbonate rocks of the Nanielik antiform,
Nome Complex, impure marble (Oim, BN002; BN004; KZ003; NM005; SO002; SO004; SO005; TE004; Pzim, BN002; SO002)
Oim
Nome Complex, impure marble, biotite grade (Oimh, BN002; SO002)
Oimh
Metaigneous and minor metasedimentary rocks
OCmi
Adams Argillite
Ca
Quartzite and argillite
Cqa
Funnel Creek Limestone
Cf
Tindir Group, undivided, Early Cambrian and Late Proterozoic argillite, quartzite, dolomite, dolo-arenite...
CZtg
Upper Tindir Group, undivided
CZtu
Upper Tindir Group, limestone, Early Cambrian
Ctls
Wickersham unit -- Limestone, Early Cambrian and Late Proterozoic
CZwl
Avalanche, light grey, buff, yellow, and orange weathering, crypto grained dolomite, silty dolomite, dolomitic siltstone and dolomitic mudstone
Cad
Hess River, shale, black, pyritic, unfossiliferous; occurs as interstratified thick units of black calcareous shale and rusty black shale
Ch
Rockslide, platy calcareous shale and silty, dark grey fine- to crypto-grained limestone; minor thin beds of light brown to grey weathering platy dark crypto-grained limestone and rare bands of buff dolomite
Cr
Hyland Group, consists upwards of coarse turbiditic clastics, limestone, and fine clastics typified by maroon and green shale; includes scattered mafic volcanic rocks
CZhy
Neruokpuk, turbiditic sandstone, quartzite, grit, and pebble conglomerate interbedded with siltstone and lesser argillite
CZnp
Neruokpuk, fine to coarse sandstone, grit and pebble conglomerate, poorly sorted, turbiditic, locally feldspathic; siltstone and slaty argillite interbeds; local maroon, green and Oldhamia bearing slate in upper part
CZng
CZu
Medium- to thick-bedded, commonly light-gray to dark-gray lime mudstone
Cls
Middle or lower Cambrian thin-bedded platy limestone associated with coarse-grained silciclastic sandstone and granule conglomerate, possible shale
Cs
Marmot -- Whale Mountain volcanics
Cv
Mafic intrusive rocks
Ci
Ultramafic and mafic rocks and greenstone, Cambrian and/or preCambrian
CZum
Wickersham unit -- Grit, Early Cambrian and Late Proterozoic
CZw
Wickersham unit -- Maroon and green argillite, Early Cambrian and Late Proterozoic (unit CZwa, LG002; ng, FB002; Cal, TN002; western exposures of unit PzpCa in part, CI002)
CZwa
Undivided shallow marine carbonate units of Holitna Basin area, late Proterozoic to Devonian
DZn
Oolitic limestone, Khuchaynik Dolomite of Babcock and others, Big River Dolostone of Babcock and others, Windy Fork Formation of Babcock and others
CZds
Nome Complex, old dolostone
Cnd
Various limestone bodies
ls
Sedimentary and igneous rocks corresponding to the Livengood sequence of Weber and others (1992)
PzZl
Sedimentary and igneous rocks corresponding to the Fairbanks-White Mountains sequence of Weber and others (1992)
Sedimentary and igneous rocks corresponding to older parts of the Schwatka-Rampart area sequence of Webber and others (1992)
DZsi
Mafic igneous rocks, Paleozoic and/or Late Proterozoic
Meta-intrusive rocks of intermediate composition
PzZi
Ruby quartz-mica schist
PzZrqm
Quartz-mica schist.  Assigned to Arctic Alaska terrane
PzZaqs
Quartz-rich metasedimentary rocks, Brooks Range Central belt and part of Northern thrust assemblages
PzZacs
Metasedimentary rocks of Bluecloud Mountain, gray phyllite, dark-gray to black metaquartzite, calcareous phyllite, and impure marble
PzZb
Mixed schists of the Kallarichuk Hills, undivided.  Schist belt.  Assigned to Seward terrane
PzZk
Siliceous schist of the Kallarichuk Hills.  Assigned to Seward terrane
PzZss
Calcareous schist - albite-rich subunit, western part of Schist belt
DZa
Calcareous schist - metachert and conglomerate subunit, Schist belt
DZmc
Calc-schist and impure marble, early Paleozoic or preCambrian
YZnc
Marble and intercalated gneissic rocks, early Paleozoic or preCambrian
PzZel
Dolomite and marble
Pzydm
Metamorphic complex, crystalline limestone, Paleozoic (Ord-Dev) or preCambrian
Pzrmc
Metamorphic complex, schist, crystalline limestone, quartzite, greenstone, slate, and phyllite
PzZm
Metamorphic rocks, Alexander terrane
PzZas
Pelitic schist, early Paleozoic or preCambrian, includes Chena River sequence
PzZysa
Marble subunit of pelitic schist, early Paleozoic or preCambrian, includes Chena River sequence
PzZysm
Sillimanite gneiss subunit, pelitic schist
PzZpg
Pelitic and quartzose schist sequence
PzZiqs
Pelitic schist of Nixon Fork basement
YZns
Quartzite, grit, and argillite.  Is this Wickersham?
Zq
Metamorphic complex, schist and quartzite with some crystalline limestone, younger unit, Paleozoic (Ord-Dev) or preCambrian
PzZmc
Metasedimentary and metavolcanic rocks, undivided
PzZcm
Mafic schist
PzZms
Metabasite, massive mafic semischist and agmatite in the Coast Mountains
PzZyv
Metasiltstone and phyllite, Grantley Harbor Fault Zone
PzZt
Metalimestone, Grantley Harbor Fault Zone
Felsic metavolcanic rocks of Nixon Fork basement
YZnv
Meta-quartz diorite
Ynqd
Kaigani, False Point Retreat, and Bronaugh Islands plutons (orthogneiss)
CZog
Metamorphic rocks of eastern Prince of Wales Island
Cmgo
Undivided Wales Group
PzZsv
Wales Group semischist and black quartzite
PzZq
Wales Group marble
PzZc
Wales Group metafelsite
PzZf
Wales Group mafic volcanic rocks
PzZmv
Gneiss and quartzite of the Ruby crystalline complex, Paleozoic or preCambrian
PzZrpg
Gneiss, schist, and quartzite of the Yukon-Tanana crystalline complex; Pelly Gneiss in Yukon in part
PzZypg
Metasedimentary and metaigneous rocks of the Hammond terrane, Brooks Range, lumping of many otherwise defined units
DSskm
Metamorphic rocks, lenses near Kobuk and Victoria Creek fault systems, amphibolite facies
PzZmr
Nome Complex high-grade schist
PzZh
Nome Complex high-grade marble
Upper Tindir Group, dolomitic sandstone and shales, Late Proterozoic
Ztds
Pinguicula/Fifteen Mile (Lower) and Tindir Group, lower part
Zt
Lower Tindir Group, dolomite, dolomitic limestone, and limestone
Ztdl
Lower Tindir Group, stromatolitic limestone
Ztsl
Lower Tindir Group, shale member
Zts
Lower Tindir Group, Quartzite and quartzitic sandstone
Ztq
Upper Tindir Group, basalt and red beds member
Ytb
Ytb?
Granitic rocks, preCambrian(?)
Zgr
Basic intrusive rocks
Zbi
Ernie Lake pluton orthogneiss
Zog
Grit, Late Proterozoic, bimodal quartzite, gray and olive-gray greenschist facies argillite
Zwg
Dolostone, limestone, orthoquartzite, and minor chert
Zs
Rapitan:  Basal rift conglomerates (1) overlain by glacial diamictite (2) in turn succeeded by fine to coarse siliclastic rocks (3) and equivalent dolostone (4)
Zr
Sheepbed:  Recessive, black weathering shale and siltstone; minor quartzite and limestone
Zsb
Wernicke Breccias:  Hematitic and dolomitic breccia and related metasomatized country rock; breccia contains variably altered rotated siliceous and carbonate clasts (Wernicke Supergroup) and minor dyke rock; breccia and metasomatites enriched in Cu, Co,
Yw
Katakturuk Dolomite and  Lake Gp.:  Dolostone and silty dolostone, locally stromatolitic, locally with chert nodules and sparry karst infillings, interbedded with lesser black siltstone and shale, laminated mudstone, and quartzose sandstone; local dolomi
lPkd
Katherine and Tigonkweine:  Mature, very fine grained, thin to very thick bedded, brown, greenish grey and white orthoquartzitic sandstone with recessive intervals of dark grey to black shale; rare stromatolitic dolomite
ZYkt
Quartet Gp.:  Black weathering shale, finely laminated dark grey weathering siltstone, and thin to thickly interbedded planar to cross laminated light grey weathering siltstone and fine grained sandstone; minor interbeds of orange weathering dolostone in
lPq
Fairchild Lake Gp.:  Lower:  greenish grey weathering calcareous laminated siltstone, grey weathering fine grained sandstone, and minor brown weathering carbonate, ripple cross-laminated; upper:  siltstone, dolomitic siltstone, and dolostone
lPfl
Hart River, undivided Mafic volcanic flows and and their possible intrusive equivalents
Yhr
Hart River Volcanics:  mafic volcanic flows, generally massive and fine-grained, locally pillowed
Yhv
Hart River Sills:  resistant dark weathering diorite and gabbro sills and dikes
Yhs
Khose Creek Volcanics:  basic to intermediate volcanic flows and aquagene tuffs
Ykc
Metasedimentary and metavolcanic rocks of Mount Angayukaqsraq
PzZma
Greenschist facies muscovite chlorite schist, quartzite and phyllite [Fairbanks schist unit - undivided]
PzZyqs
Fairbanks schist unit - Cleary subunit, white felsic schist, micaceous quartzite chloritic or actinolitic greenschist, greenstone and marble
Pelitic and quartzose schist of the Alaska Range
Quartzite subunit of quartzite and quartzitic schist
Calc-silicate and marble subunit of quartzite and quartzitic schist
Pelitic and quartzitic schist of the Ruby terrane
PzZrqs
Greenschist subunit of quartzite and quartzitic schist  [Not found yet on map.]
Quartzitic and pelitic schist of the Yukon-Tanana crystalline complex
Marble subunit of quartzitic and pelitic schist of the Yukon-Tanana crystalline complex
PzZyqm
Idono Complex, Early Proterozoic, metaplutonic rocks, amphibolite, and minor metasedimentary rocks
Xi
Includes coarse-grained gabbro, diabase and altered equivalents which locally are garnet-glaucophane rocks.  Of two ages
pCg
Amphibolite facies orthogniess and minor amphibolite and pelitic schist.  Kanektok or Kilbuck terrane
Xo
Nome Complex undifferentiated; chloritic schists and marble schists
pCn
Nome Complex, chlorite-epidote-amphibole schists, intensely deformed, locally graphitic; retograded blueschist facies rocks locally; subordinate schistose limestone
pCne
Nome Complex, dark schistose limestone intercalated with subordinate chloritic schist
pCnl
Kigluaik Group, undifferentiated
pCmu
Coarse-grained marble, locally contains mica and either olivine or monticellite
pCm
Tigaraha Schist, biotite-garnet schist
pCb
Marble and calc-silicate rocks intercalated in Tigaraha Schist
pCbm
Orthogneiss
pCgn
Metavolcanic rocks (Zv, BN005)
Zv
Biotite-hornblende-quartz-plagioclase paragneiss
pCgu
Quartz-biotite-plagioclase-hornblende paragneiss and local calc-silicate rock
pCgl
Completely unknown
Clasitc sedimentary rocks
SED
Carbonate sedimentary rocks
CARB
Chemical sedimentary rocks
CHEM
Volcanic rocks
VOLC
Plutonic rocks
PLUT
Hypabyssal rocks
HYP
Low-grade metamorphic rocks
LGM
High-grade metamorphic rocks
HGM
High-grade metamorphic rocks, carbonates
HGMC
Hornfels and migmatite
HFS
Hornfelsed zones.