TDg
Gabbro, undifferentiated, Tertiary to Devonian age [Ign] (unit TDg, MD002; unit TMg, OP002)
bu
Bedrock of unknown type or age (Rubble of metasiltstone and chert, KH002; KH004; unit btu, OP002; MM002; Unmapped bedrock, BV002)
Areas not to be filled that lie within coverage, typically not mapped
Qs
Surficial deposits, undifferentiated (TY002; TY003; TY005; GU002; IL002; Qu, OP002; LH002; LH003; RB003; SM002; MC002; LC002; Qac, MD002; HE002; Qau, TL002; Q, VA002; AN002; TK002; TN003; MG003; RB005; Qsu, LG002; Qcal, TN002; Qac, Qg, CI002; Qcal, Qags,
g
Ice fields or glaciers (unit Qg, MG002)
Water (streams, lakes, ocean)
Qav
Avalanche deposits
Qa
Alluvium (Qal, RB002; MZ002; NL002; OP002; MH002; LG002, FB002; BD002; KH002; KH003; KH004; SM002; BV002; LH002; BR002; Qa NB002; MG002; GU002; BH002; CA002;  GO002; TC002; Qua, NB002; units Qa, Qab, CI002; units Qal, Qags, TN002; unit Qfy, NL003; unit Q
Qaf
Alluvial fan deposits (LG002; CI002; KH002; KH003; MG002; units Qaf, Qha, Qda, and Qtf, FB002; unit Qf, BD002; TN002; units Qaf, Qf, Qat, BV002)
Qc
Colluvium (OP002; MH002; LG002; KH002; KH004; LH002; NB002; RM002; units Qc, Qta, KH003; unit Qac, BD002; units Qc, Qta, TN002; unit Qca, MM002; units Qca, Qct, MG002; unit Qco, GU002) [Qc, Talus and other colluvium (Byers, 1959)]
Qls
Landslide deposits (Ql, TL002; FB002; LH002; NB002; TC002; units Qrs, Qls, TN002; KH003; unit ls, NL003; unit Qcl, MG002)
Qt
Terrace deposits (OP002; Qt, KT002; CA002; CY002; TC002; BR002; units Qbg, Qtr, TN002; units Qbg, Qtr, KH003; unit Qhs, NL003; unit Qap; BV002)
Qac
Abandoned channel deposits (units Qfy, Qfo, MZ002; unit Qf, KT002; MD002; unit Qab, LG002; FB002; BD002; unit Qfo, NL003; unit Qc, GU002)
Ql
Lacustrine deposits (KH004; GU002; Qfl, MH002; NB002; unit Qgl, NB002; unit Qlc, KH002; units Qls; Qfl, TC002)
Qsw
Swamp deposits (FB002; unit Qsp, BD002; unit Qrs, RM002; unit Qs, TC002)
Qb
Beach deposits (units Qyb, Qob, BL002; KW002; unit Qb, TC002; AP)
Qes
Estuarine deposits (Qes, CB003; CG004; DI002; DI005; Qe, HP002; MA002; Qf, NR002; es, MK003; Ql, CV003?; es, CG003)
Qmt
Marine terrace deposits (Qmt, CB003; CG004; PM002; UG003; UG004; Qtg, AD002; mt, CG003; MK003)
Qd
Dune deposits (MZ002; units Qna, Qns, Qms, KT002; Qms, MD002; LG002; FB002; BD002; unit Qess, TN002; KH002; KH003; unit Qdl, KH004; unit Qe NB002; unit Qe, MG002; unit Qh, UL002; unit Qds, GU002; units Qe, Qd, TC002; unit Qs, BV002)
Qfl
Loess, Fairbanks loess (unit Qf, FB002; unit Ql, BD002; BR002; unit Ql, TN002; BV002; CI002; KH003; unit Qsw, RM002; unit Qfl, CY002)
Qsu
Frozen silt, undifferentiated (FB002; unit Qs and Qsu, CI002; unit Qs, KH002; KH004; RM002; unit Qsp, MG002)
Qm
Moraine, undivided, of Holocene and/or Pleistocene age (MZ002; MD002; BD002; CI002; unit Qt, KH003; unit Qg, LH002; units Qdt, Qdic, MG002; unit Qd, RM002; unit Qt, BH002; unit Qg, GO002; unit Qt, BV002)
Qsg
Superglacial drift (Qsm, BG002; CV003; MM002; Qsg, CG004; sg, CG003)
Qrg
Rock glacier deposits (Qr, TL002; LH002; unit Qrg, NB002; MG002; unit Qr, TC002)
Qsf
Solifluction deposits (KH002; Qsm, BV002; Riehle and Detterman, 1993).
Qek
Esker deposits
Qnd
Drift, neoglacial (unit Qa, TL002; Qam MH002; Qt4, TN002; KH003; unit Qrm, MM002; unit Qag, NB002; unit Qg, TY005)
Qao
Outwash deposits, Neoglaciation
Qwu
Drift, undivided, Wisconsin-age Glaciations (Qwm, MH002; Qn, Naptowne, TL002; Qk, Knik, TL002, Qt, TN002; unit Qg, SM002; unit Qom, MM002; unit Qwg; NB002; unit Qdtf, MG002; unit Qgo, TY005; Donnelly glaciation, unit Qdm; FB002; unit Qyg, HU002; unit Qm,
Qwr
Riley Creek glaciation, late Wisconsin (unit Qrm, FB002; unit Qt3?, TN002; KH003; unit Qg3, SM002)
Qw2
Till (unit Qt2, TN002; KH003; unit Qg2, SM002)
Qw1
Till (unit Qt1, TN002; KH003; unit Qg1, SM002)
Qwo
Outwash deposits, Wisconsin-age Glaciations; Outwash, Riley Creek Glaciation, late Wisconsin (Qrc, FB002; Qwf, MH002; Qou, SM002; Qw, MM002; Qao, LH002; units Qdo, Qdot, MG002; unit Qo, RM002; unit Qoa, TC002)
Qrd
Rock-defended terraces (unit Qb, TN002; KH003)
Qat
Altiplanation terraces (TN002; KH002; KH003)
Qog
Glaciations older than(?) Wisconsin, Drift of older glaciations (Eklutna Glaciation,TL002; Healy Glaciation, FB002; MH002; NB002; Qdts, Qdtlm, MG002; Qga, HU002) [Overprint pattern 13]
Qblk
Kvichak Stade  (oldest advance), Brooks Lake Glaciation (Qblk, PM002)
Qow
Older Wisconsin age outwash (Qho, FB002, Odo, BD002; unit Qof, MG002) [Overprint pattern 13]
Qmi
Illinoian glaciations (pre-Eklutna glaciation, TL002; unit Qdlm, BD002; unit Qdtplm, MG002; Qdm, TC002) [Overprint pattern 14]
Qoo
Outwash older than Wisconsin-age (unit Qdo, FB002; Qdlo, BD002; Qof, TC002) [Overprint pattern 14]
Tmp
Pliocene(?) glaciations (unit Qbm, FB002; unit Tg, NB002; unit QTg, MG002; Qom, TC002) [Overprint pattern 15]
QTs
Surficial deposits, undivided (ID002; BR002)
QTg
High-level gravel (TN002; KH003; Jones Creek gravel deposits MD002; unit QTg, LG002BV002; Tc, TC002)
Qpm
Placer deposits (ID002; LG002; FB002)
Qv
Volcanic rocks, undivided (TY002; TY005; IL002; LC002; units Qya, Qvt, UL002; units Qnf, Qcc, Qcs, GU002; unit Qb, BH002; unit Qal, IL002)
Qw
Wrangell Lava, younger part (NB002; units Qdf, Qsf, GU002)
Hv
Holocene volcanic rocks (TY005, unit Qp, TC002)
Qpd
Pyroclastic (Ash and debris flow) deposits (TY005; unit Qap, IL002)
Qafd
Ash-flow and ash-fall deposits
Qdf
Debris-flow deposits (TY005; unit Qsdf, GU002)
Qmf
Mudflow deposits (unit Qar, IL002)
Qva
Volcanic avalanche deposits (unit Qda, GU002)
Qmsv
Mineral spring and mud volcano deposits (unit Qms, GU002)
Qshc
Hyaloclastite or aquagene tuff (unit Qsh, GU002)
Qcs
Cinder and spatter cones (FB002; unit Qwr, NB002; unit Qbc, GU002)
Qed
Explosion debris
QTb
Basalt (KT002; RM002; UL002; CA002; BT002; TC002; BR002)
Qi
Intrusive rocks, undivided (units Qdc, Qsi, GU002)
Qvd
Dacitic to rhyolitic domes (units Qdd, Qdr, Qsr, Qni, Qcr, GU002; unit Hvcp, TY005)
Qanp
Andesite plug domes
Qds
Radial dike swarm and plug (unit Qcd, GU002)
QTv
Quaternary and/or Tertiary volcanic rocks, undifferentiated (unit Tv, TY002; TY005; unit QTu, GU002; unit QTv, IL002)
QTa
Andesitic lava
QTw
Wrangell Lava (VA002; MC002; NB002; unit Qwf, GU002)
QTi
Intrusive rocks (GU002; VA002)
QTva
Wrangell Lava, rhyodacite and rhyolite domes and associated pyroclastic rocks (NB002; unit Qwd, GU002)
Quaternary and/or Tertiary pyroclastic flow deposits
QTc
Quaternary or Tertiary metamorphic rocks, particularly in Mt. Dana area on Port Moller map
Tsu
Sedimentary rocks, undivided (unit Ts, HE002; GU002; IL002; units Ts, Tc, and Tsc, MH002; unit Tcs, CI002; BD002; unit Tsu, TK002; units Ts, Tcl, MG002; unit Tclg, MG003; unit Tscg, MZ002)
Tmr
Milky River Formation (includes unit Tvs, McLean and others (1978)
Tsf
Sterling Formation (TL002; TKs, TY002) [Overprint pattern 13]
Tkb
Beluga Formation (TY002; TY005) [Overprint pattern 14]
Ttg
Tugidak Formation, (also unit Tp, Pliocene marine sedimentary rocks [Moore, OFR 271] (Moore, 1969)
Tk
Kenai Group, undivided (TL002; TY004)
Tn
Nenana Gravel, Pliocene and Miocene (HE002; MH002; FB002; BD002; KH004; MM002)
Tn?
Nenana Gravel? (MM002)
Tta
Tachilni Formation
Tbl
Bear Lake Formation
Tnc
Narrow Cape Formation, same as Tms [Miocene marine sedimentary rocks (Moore, OFR 271)?] (Moore, 1969)
Tun
Unalaska Formation (Drewes and others, 1961)
Tty
Tyonek Formation (AN002; unit Tkt, TY002; TY005) [Overprint pattern 15]
Ttyc
Tyonek Formation, Conglomerate member (TL002) [Overprint pattern 15]
Ttys
Tyonek Formation, Sandstone member (TL002) [Overprint pattern 15]
Tty?
Tyonek Formation (unit Tkt?, TY005) [Overprint pattern 15]
Tu
Unga Formation (Conglomerate)
Tbe
Belkofski Formation
Ttyh
Tyonek Formation and Hemlock Conglomerate, undivided (TY002) [Overprint pattern 15]
Tcb
Coal-bearing rocks, Miocene? to Eocene? (HE002; TL002; FB002; BD002; unit Ts, TN002; TN003; KH003; UL002; units Tcf, Tcg, MG002; unit Tcg, MG003; unit Tcs, BD002; Ts, BV002)
Th
Hemlock Conglomerate
Tsk
Sitkinak Formation, same as To (Oligocene continental sedimentary rocks) on OFR 271? (Moore, 1969)
Tts
Tsadaka Formation (AN002; Tt, TY002)
Tsi
Sitkalidak Formation, same as Teo [Eo-Oligocene marine sedimentary rocks (Moore, OFR 271)?] (Moore, 1969) [Overprint pattern 13]
Ttw
Tsadaka and Wishbone Formations, undivided (TK002).  Tsadaka is Miocene on (TK002), whereas it is Oligocene on (AN002); Wishbone is Eocene to Paleocene on (TK002) and Eocene on (AN002)
Tvs
Volcanic and sedimentary rocks, undivided, Oligocene and Eocene (LG002) [Overprint pattern 13]
Tst
Stepovak Formation
Tcl
Copper Lake Formation (Unit Tc on Mt. Katmai map, Riehle and others, 1987; unit Tcl, TY002; units Tclu, Tcls, Tcll, IL002)
Twf
West Foreland Formation (TY002; TY005) [Overprint pattern 14]
Tt
Tolstoi Formation
Tw
Wishbone Formation (AN002; TY002) [Overprint pattern 15]
Tfv
early Eocene fluviatile and subordinate volcanic rocks (HE002; unit Tvs, MG002) and continental clastic conglomerate (unit Tc, MH002; units Tcl, Ts, MG002; unit Tclg, MG003) [Overprint pattern 15]
Tar
Arkose Ridge Formation (AN002; TY002; unit Kar, TK002)
Tch
Chickaloon Formation (TK002; unit Tc, AN002; TY002)
Tjc
Sedimentary rocks of Jarvis Creek coal field, undivided (unit Tsj, MH002)
Tjcu
Sedimentary rocks of Jarvis Creek coal field, upper member (unit Tsju, MH002)
Tjcm
Sedimentary rocks of Jarvis Creek coal field, middle member (unit Tsjm, MH002)
Tjcl
Sedimentary rocks of Jarvis Creek coal field, lower member (unit Tsjl, MH002)
Tos
Sedimentary rocks of the Orca Group, undivided (AN002; VA002)
Tovs
Sedimentary and volcanic rocks of the Orca Group, undivided (unit Tos, AN002; VA002)
Toc
Conglomerate of the Orca Group (AN002; VA002)
Tgh
Ghost Rocks, same as Tpe (Paleocene volcanic and marine sedimentary rocks [Moore, 1967, OFR 271]?) (Moore, 1969)
Tvu
Tertiary volcanic rocks, undivided (unit Tvv, HE002; unit Tv AN002; TY002; TK002; IL002; unit Tvs, TL002; units Tvs, Thi, TY005; unit Tvi, LH003; units Ta, Thr, UL002; units Ta, Czab, GU002; unit Tf, TC002)
Tvab
Andesite and basalt flows (unit Ta, NR002; Tm, HC002)
Trs
Rhyolitic volcanic and sedimentary rocks (unit Tvs, TN002; unit Tv, TN003; LC002; unit Tr, RM002) [Overprint pattern 14]
Trp
Rhyolite plug on I-1229
Tda
Dacite
Ta
Andesite; on map I-1685 unit Tau was subdivided for Alaska Peninsula map depending on location. (Unit Tvf, LC002) [Overprint pattern 14]
Tb
Basalt (unit Tb, LG002; FB002; SM002; unit Tm, TC002) [Overprint pattern 13]
Tum
Ultramafic rocks (Moore, OFR 271) On Kodiak
Thf
Hypabyssal intrusive rocks of uncertain age (Mt. Katmai, Riehle and others, 1987; unit Ti, TY002; unit Tid, MG002) [Overprint pattern 13]
Hypabyssal felsic and intermediate intrusions.  Age range Paleocene to Miocene, mostly Early Tertiary or Eocene? (unit Ti, AN002; unit Tif, VA002; unit Tif, TK002; unit Tvif, HE002; MM002; unit Tf, BD002; unit Th, TY002; unit Tp, NB002; unit Tif, VA002;
Thm
Hypabyssal mafic intrusions.  Age range Miocene to Paleocene (TK002), Eocene (AN002) or Oligocene to Paleocene (HE002) (unit Tim, TK002; unit Tim, AN002; unit Tivm, HE002; MM002; unit Td, LH003; unit Tim, MG002); Mafic to intermediate dikes, sill, stocks
Thd
Hornblende dacite of Jumbo dome (HE002)
Tv
Miocene volcanic rocks, includes unit Tva, Miocene volcanic rocks on Mt. Katmai map, Riehle and others, 1987
Tab
Miocene and Pliocene andesite and basalt
Tba
Miocene basaltic andesite (ID002)
Tdi
Miocene and/or Pliocene hypabyssal dacite intrusions, includes unit Tdp, Dacite plugs on I-1229; rhyolite and dacite dikes and sills (GO002)
Tvr
Crystal and crystal-lithic ash-flow tuff (units Tv1, Tv2, Tv3, Tv4, Tv5, LH002; unit Tvt, IL002)
Tvb
Mt. Galen volcanics; Ship Creek, Windy Fork, and Terra Cotta volcanic fields, McGrath (MM002; Roundabout Mtn. volcanic field, KT002; units Tvt, Tvld, Tva, Tvd, Tvvd, Tvab, Tvlr, Tvgt, Tvl, Tvf, Tvm, MG002; unit Tvba, Tvr, IL002)
Tm
Meshik Volcanics (Formation)
Basaltic lavas of the Meshik volcanic arc (on Mt. Katmai map, Riehle and others, 1987)
Tvm
Andesitic and dacitic rocks of the Meshik volcanic arc (on Mt. Katmai map, Riehle and others, 1987)
Tap
Andesite plug on I-1229
Tp
Popof volcanic rocks, only in Shumagin Islands = Meshik
Tver
Moderately altered rhyolite flows, Nukluk Volcanic Field (unit Tnr, BH002)
Tvnb
Massive basalt and andesite, Nukluk Volcanic Field (unit Tnba, BH002)
Tvep
Tuff and breccia, Eocene or Paleocene (unit Tt, UL002; units Tv, Tn, GO002; unit Tr, ST002)
Tov
Orca Group, volcanic rocks, undivided, Paleocene and Eocene? (VA002)
Tcv
Cantwell Formation, volcanic rocks subunit (HE002; unit Tv, MH002)
Tiu
Tertiary intrusive rocks, undivided (unit Ti, on Mt. Katmai map, Riehle and others (1987); units Ti, Tg, RM002; unit Tp, TC002)
Tgd
Granodiorite, undivided (on Mt. Katmai map, Riehle and others, 1987; unit Ti, IL002)
Tqd
Quartz diorite, undivided (on Mt. Katmai map, Riehle and others, 1987; unit Ti15, LC002, also unit Ti14, LC002, considered altered 11206)
Tgb
Gabbro and diorite, undivided (on Mt. Katmai map, Riehle and others, 1987); unit Tm, RM002; unit Tgb, TC002)
Tiv
Granitic and volcanic rocks, undivided.  Age range Oligocene to Paleocene (unit Tgrv, HE002)
Ti
late Miocene and Pliocene granitic intrusive rocks of the Agripina Bay, Moss Cape, American Bay, and Devils batholith and other similar age plutons, unit Tqd on I-1229 and I-1685 = 362 and unit Ti on Mt. Katmai map (Riehle and others, 1987; unit Tg, MC00
Diorite, Unalaska map
Tgg
Gabbro, Unalaska map
Togr
Granitic rocks (units Twf, Tnep, LH002; unit Ti, MC002; unit Tsxr, TY003; TY005; unit Twg, MG002; Units Ti19, Ti18, Ti3, LC002)
Tgmb
Granitic phase (Biotite granite) of Miners Bay pluton (unit Tmg, AN002)
Top
Oligocene basalt plug
Toegr
Granitic rocks (units Tmp, Ttg, Tsf, Tsc, TKqc, Tgd, Tus, Tcpi, LH002)
Tegr
Granitic rocks (unit Tg, SM002; units Tiu, LH002)
Tgr
Tertiary granitic rocks -- McGonagall pluton? (no unit, MM002)
Toem
Granodiorite to tonalite (units Tmpg, Tjc, Tsr, Tt, Tmr, LH002; units Ti6, Ti16, LC002), Mafic phase, Miners Bay pluton (unit Tmm [1282], AN002)
Granite and granodiorite, Tertiary(?) Eocene? (unit Tgr, VA002; MG003; unit Tg, TY004; unit Tp, ID002; unit Tgr, HE002; unit Tgd, MG002; unit Ti, TY005; unit Ti17, Ti12, Ti11, Ti4, LC002)
Td
Felsic intrusions, leucocratic dikes, sills and small stocks, south of Border Ranges fault (AN002)
Tgdp
Quartz monzonite, monzonite breccia, and quartz porphyry (unit Tqm, MG002; MG003)
Tonalite (unit Tt, VA002)
Tod
Oligocene and Eocene diorite = Td on I-1229
Tpgr
Granitic rocks (unit Tg, TN002; TY002; TY005; units Tcp, Tbr, Jimmy Lake stock, Tcc, Tse [Snowcap East pluton], LH002; unit Tc, TY003; TY005; unit Tsq, NB002; unit Tgr, BD002; units Tgr, Tgqm, Tgsy, Tsy, MG002; unit Tg, UL002; unit Tial, BH002; unit Ti10
Tg
early Tertiary granitic intrusive rocks of the Kodiak, Shumagin, Semidi, and Sanak Islands on I-1229, on OFR 271  in part, on MF-1057 = 391 in part
Thgd
Granodiorite of Mount Estelle; Biotite-hornblende granodiorite, (unit Thgd, TK002; unit Tme, LH002; TY003; TY005; unit Te, TL002; unit Tn, TY003; unit Tgd, TY002; MG003; unit TKqm, MG002; units Tme, TKn, TY005; unit Ticp, BH002; unit Tg, ST002; units Ti8
Tgl
Hornblende and pyroxene-hornblende gabbro (LH002; unit Tgb, MG002; unit Ti5, LC002)
Tgma
Cottonwood Creek Complex, gniess and amphibolite (unit Tc, NB002)
TKcg
Conglomerate, sandstone, and lignite (MD002; unit TKs, UL002; CY002)
TKcs
Conglomerate and sandstone (unit TKc, NB002)
TKv
Extrusive rocks, flows, tuff, and breccia (unit TKe, RB002; unit TKv, RB003; OP002; unit TKvt, MG002; unit TKuv, RM002; unit TKu, UL002; TKv, BT002; unit Mzmu, TC002)
TKd
Dikes and subvolcanic rocks (unit TKd, OP002; SM002; ID002; LH002; unit TKi, TL002; unit TKsa, MD002; unit TKm, MG002) [Overprint symbol 15]
TKgp
Hypabyssal granite porphyry dikes, sills, and plugs (ID002; unit TKf, CI002; unit 219 (TKd), LH002; unit TKr, SM002; unit TKi7, LC002) [Overprint symbol 16]
TKvr
Volcanic rock, light gray to pink rhyolite (MZ002; unit TKr, KH002; UL002; unit TKvf, MG002; units TKst, TKsr, TKer, TKtb, BH002; unit TKvr, BV002) [Overprint symbol 13]
TKvd
Volcanic rocks, dacite (unit TKv, TN002; TN003; unit TKvd, MG002; unit TKtd, BH002) [Overprint symbol 13]
TKvi
Iditarod Volcanics (ID002; unit TKa, KH002; unit TKa, UL002; unit TKvm, MG002; units TKea, TKsa, BH002) [Overprint symbol 14]
TKhp
Baultoff Creek region older porphyry (unit TKp, NB002)
Felsic tuff (TY004; TY005)
Pilotaxitic dacite-andesite plugs (ID002) [Overprint symbol 15]
Felsic volcanic rocks (unit TKvf, SM002) [Overprint symbol 13]
TKiv
Mafic to intermediate volcano-plutonic complexes (unit TKc, OP002; MD002; unit TKv, SM002)
TKim
Mafic to intermediate volcano-plutonic complexes, monzonite (unit TKcm, MD002)
TKi
Intrusive rocks (RB002; NL002; TL002; TY003; TY005; unit TKg, SM002; units TKiu, Tgdn, LH002; unit gr, MM002)
TKg
Granitic rocks (Granite MD002; Granite AN002; Granitic rocks, undivided TK002; Felsic granitic rocks LG002; unit Mzi, FB002; unit TKg, BD002; CI002; KH002; KH004; LH002; CY002; RB005; unit TKh, NL003; unit TKgr, MM002; units TKgr, TKgp, MG003; units TKif
TKm
Granitic unit 2, granodiorite dikes, stocks, and small plutons (unit grn2, MH002; unit TKk, TL002; unit TKig, LH002; unit TKg, NB002; unit TKgd, TY002; TY005; unit TKin, BH002; unit TKi, IL002; unitsTKi14, TKi13, TKi12,TKi9, TKi8, TKi4, TKi2, LC002)
TKqd
Granitic unit 3, quartz diorite and diorite dikes, stocks, and small plutons (unit grn3, MH002; unit TKd, NB002; units TKqd, TKqd1, TKqd2, TY005; units TKie, TKig, TKip, BH002; unit TKi6, TKi3, TKi1, LC002) [Overprint pattern 14]
TKgb
Gabbro (units TKmg, TKtp, TKm, TKpg, LH002); Leucogabbro (unit TKlg, TK002; unit TKm, TY005; unit TKg, ST002)
TKl
Lamprophyre, alkali gabbro, and alkali diorite (unit la, MH002)
TKc
Cataclastite (AN002; unit TKm, VA002)
TKgg
Gneissose granitic rocks (unit gg, MH002; unit TKgs, LH002);
MzPzgs
Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks (SM002; unit KCgu, RM002)
Mzi
Intrusive rocks, quartz diorite and diorite (TY003)
MzPzgv
Gemuk Group of southwestern Alaska and gabbro and basaltic rocks of Kechumstuk Mountain in Interior Alaska, largely altered mafic volcanic rocks (unit KCgg, RM002; unit Mzgb, TC002)
Mzm
Mafic rocks, diorite and gabbro (TY003) (Unit gone from compilation)
Mzum
Ultramafic and associated rocks (unit um, MH002; unit GG, VA005 [new unit])
Ultramafic and mafic igneous rocks along Broxson Gulch thrust (unit umm, MH002)
JPzk
Metasedimentary and metavolcanic rocks, (TY003; TY005) (Correlated with Kakhonak Complex)
Metavolcanic and metasedimentary rocks, (TY003; TY005) (Correlated with Kakhonak Complex)
Ksu
Cretaceous sedimentary rocks, undivided (unit Ks, TY004) [Rassigned to other units]
Knb
Changed to NSA = 2021.Undivided marine and non-marine shale and siltstone (unit Knm, KT002 [see also 2115])
Kca
Chert and argillite (unit Kc, RB002) [Not used, see 6080, 3850]
Klsc
Limestone conglomerate (unit Klc, CA002)
Kcvg
Calcareous volcanic graywacke and mudstone turbidite (unit Kcc, CA002) [Overprint pattern 13]
Kcg
Calcareous graywacke and mudstone (unit Kcg, CA002) [Overprint pattern 14]
Kcc
Calcareous graywacke and mudstone (unit Kcv, CA002) [Overprint pattern 15]
Ksh
Shale and siltstone (OP002) [Overprint symbol 13]
Ksa
Sandstone, Late Cretaceous (OP002) [Overprint symbol 14]
Kvss
Volcaniclastic sandstone (OP002) [Overprint symbol 15]
Kcs
Cantwell Formation, sedimentary rocks subunit (HE002; MM002; unit Ts, TL002)
Kk
Late Cretaceous undifferentiated clastic rocks (unit Ksc, MD002 [should this be NSA 1970?]; unit Ku, MC002; unit Ks, UL002)
Kss
Non-marine sandstone, quartz conglomerate, shale, and siltstone (unit Ks, MZ002; NB002; RB004; unit Kr, TC002) [Overprint symbol 16]
Limy volcaniclastic sandstone (unit Kls, OP002)
Kshn
Non-marine shale, siltstone, and sandstone (unit Ks, HP002; HC002; SC002; KW002) [Overprint symbol 16]
Kshf
Shumagin Formation
Kkg
Kaguyak Formation (TY002; unit Kk, IL002)
Ksmd
Shumagin Formation, mudstone member
Kkd
Kodiak Formation (Moore, OFR 271) = Kk on MF-1057
Kh
Hoodoo Formation
Kc
Chignik Formation
Khc
Chignik and Hoodoo Formations, undivided.  Also includes Late Cretaceous called Kaguyak Fm. on the west side of Cook Inlet in the Seldovia quad (Kk, SV002)
Kuskokwim Group, sandstone, siltstone, shale, and conglomerate (ID002; unit Kk, SM002; GO002; unit Kku, LH003; unit Kks, RM002; unit Ku, OP002; unit Ksu, MD002; unit Kss, OP002; units Kcs, Kss, Kls, Kus, Ksh, MG003; units Kkcf, Kkmf, Kkmc, Kkv, Kksh, BH0
Kms
Minto unit, siltstone, mudstone, graywacke, quartzose sandstone, plant fragments, Late Cretaceous(?) (unit Km, LG002)
Kkn
Kuskokwim Group, nonmarine to marginal marine quartzose sandstone and siltstone (unit Kkq, ID002; unit Ksc, OP002; unit Kss, MD002; units Kqs, Kqcs, MG003; units Kkcd, Kkbc, BH002) [Overprint symbol 16]
Kqc
Quartz-pebble conglomerate, early Late Cretaceous (MZ002; BT002; HU002) [Overprint symbol 14]
Km
Matanuska Formation, fossiliferous marine shale, late Early Cretaceous to Late Cretaceous (AN002; TK002; TY002; GU002)
Kme
Melozitna sequence, informal name; Shaktolik (sp) Group (abandoned name), graywacke, shale, grit, and conglomerate (late Early Cretaceous to Late Cretaceous, unit Ks, RB002; NL002; OP002; RM002)
Igneous pebble-cobble conglomerate (Albian and Late Cretaceous?, unit Kc, MZ002; HU002; RB004; unit Kic, BT002) [Overprint symbol 15]
Knl
Early Cretaceous undifferentiated sedimentary rocks (unit Ksu, TK002; unit Kl, MC002) [Overprint symbol 13]
Ksse
Marine sandstone and siltstone, Early Cretaceous (unit Ks, ID002; unit Km, KT002; unit Km, NL003)
Kvgm
Volcanic graywacke and mudstone, late Early Cretaceous (Albian) (unit Kgm, MZ002; RB005; unit Knm, eastern map area, KT003; CA002; tentatively Kls, KW002; Kv, ST002; unit Kgm, BT002; unit Kcg, HU002)
Kbc
Berg Creek Formation  (unit Kb, VA002)
Kwcf
Lower Cretaceous flysch; argillite and lithic graywacke (unit Kag, TK002)  Early Cretaceous flysch, Wilber Creek unit (units Kwcc, Kwcs, LG002; unit Kwc, TN003; unit KJgs, KH002; unit KJcs, KH003; unit Kts, BH002; unit Kka, CY002)
Kp
Pedmar Formation, Albian (unit Kp, Riehle and others, 1987)
Ksm
Quartz-carbonate sandstone and pebbly mudstone, Early Cretaceous, Valanginian-Aptian (unit Kqc, MD002; unit Kb, GO002) [Overprint symbol 13]
Kba
Biederman Argillite, Kandik Group, Valanginian (unit Kb, CY002) [Overprint pattern 13]
Kcct
Cape Current terrane (MF-1057)
Kkq
Keenan Quartzite, Kandik Group, Valanginian (unit Kk, CY002; Kq, BR002) [Overprint pattern 15]
Karg
Argillite, Early Cretaceous(?) (CY002) [Overprint pattern 14]
Khe
Herendeen Formation (= Khl, Herendeen Limestone on some maps; unit Kss, TY002; unit Klg, GO002)
Kli
Limestone, Early Cretaceous(?), primarily Inoceramus prisms (unit Kl, CY002)
Kmm
Marine mudstone and sandstone (unit Kgs, KT002; unit Kgm, KT002 [201]; unit Kcs, NL003 [303]; unit Kcs, KW002)
Kuc
Ungalik Conglomerate (unit Ku, RB002; NL002)  [Not used]
Kst
Staniukovich Formation (unit Ks, Riehle and others, 1987; unit KJs, I-1229)
Kvm
Earliest Cretaceous volcanic graywacke and conglomerate  (MD002; unit Kvg, OP002 [According to Patton, oral commun., 1997]; unit Kg, UL002; unit Kvs, BH002; units Kvg, Kvm, CA002; unit Kg south of Kaltag Fault, NL003)
Earliest Cretaceous volcanic conglomerate (KT002, shown as part of unit Kgs - 2152)
Kmk
McHugh Complex, Uyak Complex, melange (unit Mzm, AN002; unit KJm, VA002; unit KJm, TY002)
Kmar
Melange south of McKinley Fault (unit Kms, HE002)
TrSl
Melange south of McKinley Fault, limestone blocks (unit (msl)Kms, HE002)
Melange north of McKinley Fault (unit Kmn, HE002; unit wm, MH002 [same as Kmy and Kmz in Healy quad?, subdivided also on map])
Melange north of McKinley Fault, limestone blocks (unit (mnl)Kmn, HE002)
mlu
Melange north of McKinley Fault, ultramafic rocks (unit (mno)Kmn, HE002)
Kve
Hypabyssal rocks, dacite and rhyolite porphyry (MZ002; unit Ktr, BH002; unit Khi, HU002; unit Ki, KW002)
Cretaceous basalt, local pillow flows, probably early Cretaceous (unit TKb, TY004; TY005) {Kve}
Kvl
Andesitic subvolcanic rocks (unit Kva, HE002) [Overprint symbol 14]
Basaltic subvolcanic rocks (unit Kvb, HE002) [Overprint symbol 14]
Kuskokwim Group, tuff and agglomerate (ID002; unit Kac, OP002) [Overprint symbol 14]
Kuskokwim Group, flows and tuff (ID002; RM002) [Overprint symbol 14]
Volcanic rocks, Kipchuk Volcanic Field (units Kvkr, Kvk1, Kvk2, Kvk3, Kvk4, Kvk5, Kvk6, BH002) [Overprint symbol 14]
Equivalents to Iditarod Volcanics, tuff, breccia, altered andesitic to dacitic flows (unit Kit, ID002; units Kvmp, Kvm, MG003; unit Ksl, BH002; unit Ki, ST002) [Overprint symbol 14]
Ktg
Tuff, volcanic graywacke, and mudstone (MZ002; unit Kts, GO002; unit Ktg, HU002) [Overprint symbol 15]
Andesitic volcanic rocks (earliest Cretaceous, Neocomian, but may include Albian) (MZ002; unit Kv, RB004; unit KJv, KT002 [may include late Jurassic]; unit Kv, NL003; BT002; unit KJv, HU002; KW002; unit Kv, UL002) [Overprint symbol 16]
Kcve
Chisana Formation, andesitic flows and volcaniclastic rocks (unit Kc, MC002; NB002)
Kg
Dikes, granite to diorite (LG002)
Granitic Rocks (unit Kg, RB004; BV002; KT003; KH003; CA002; unit Kgr, HE002; NL003; unit Kag, HU002; unit Ki15, LC002)
Kgt
Tourmaline bearing granite (HE002)
Kgd
Granodiorite (unit Kg, GU002; units Ki14, KI13, Ki11, KI10, Ki7, Ki3, Ki2, Ki1, LC002; part unit Kg, MZ002)
Kmum
Gabbro of Mount Moffit (unit gbm, MH002; unit Kd, BD002; unit Km?, TN002; unit Km, KH003)
Serpentinite, diabase, gabbro, and mafic volcaniclastic rocks (unit Km, KH003)
Alaskite (LG002; unit Kp, BD002) [Overprint symbol 13]
Granite (unit Kgr [part], HE002; RB005; units Kick, Kicc, BH002; unit Ki8, LC002) [Overprint symbol 13]
Syenite (LG002) [Overprint symbol 13]
Quartz monzonite, monzonite, and syenite (LG002; unit Kg, TN002; TN003; units Ksp, Ki, LH002; units Km, Kmd, MG003; unit Kihd, BH002; unit Kg, BT002; unit Kqm, IL002) [Overprint symbol 13]
Granite (Pedro Dome, LG002; unit Kgm, NB002); Quartz monzonite, Gardiner Creek pluton (unit Kgq, NB002); Quartz monzonite, Cheslina pluton (unit Kcg, NB002); Quartz monzonite, Tok-Tetlin pluton [Tetlin phase] (unit Ktq, NB002); Granodiorite, Tok-Tetlin p
Granodiorite (unit Kg, MZ002; BD002; unit grmr, MH002; unit Kw, AN002; unit Kgd, LG002; TKg, TN003)
Serpentinized ultramafic rocks (AN002; NB002; unit Ksp, TN002; unit Ksp, BH002)
Slana, Nabesna, Antler Creek, Klein Creek pluton, Border of Antler Creek pluton, hornblende granodiorite, granodiorite and quartz diorite, syenodiorite, hornblendite, granodiorite and quartz monzonite (unit Kng, Ksg, Kas,  Kah, Kkg, NB002; Kkg, MC002) [O
Quartz-feldspar porphyry (unit Knp, NB002) [Overprint 14]
Pink coarse-grained granite (unit Kis, BH002) [Overprint 14]
Quartz monzonite (MZ002; unit Kg, TY002; unit Kinc, BH002) [Overprint 14]
Buck Creek pluton, quartz diorite and syenodiorite (unit Kbd, NB002); Suslota Pass pluton, diorite (unit Ksd, NB002); Devils Mountain pluton, diorite, quartz diorite, ... (unit Kdd, NB002); Chisana pluton, diorite and syenodiorite (unit Kcs, NB002); Horn
Ktt
Leucotonalite and trondjemite (AN002; unit Knt, NB002) [Overprint 14]
Kmi
Metamorphosed granitic rocks, largely diorite (unit ag, MH002; unit Kag, Haley Creek terrane, metaplutonic rocks VA002)
Mzsa
Migmatite (unit mig, MH002), transitional between migmatitic schist (unit mgsh) and gneissose granitic rocks (unit gg), MH002) [Overprint symbol 14]
Migmatitic schist and amphibolite (unit mgsh, MH002) [Overprint symbol 14]
Khg
Hornfels and gniess (unit Kh, KH003)  [As mapped is gneissose areas within hornfels, largely on the Tanana geologic map (TN002)]
Metagabbro, metadiabase, and minor amphibolite (unit mgb, MH002)
Kvs
Metasedimentary rocks of the Valdez Group (AN002; VA002; unit KJv, MC002; TY002)
Kvv
Valdez Group, metavolcanic rocks, undivided (unit Kvv, VA002; unit Kvt, AN002)
PPaskm
Haley Creek terrane, (mid-Cretaceous?) schistose marble (unit M, VA002) [Overprint pattern 15]
KJs
Argillite, chert, sandstone, and limestone (unit KJc, BH002; unit Mza, TC002) [Overprint symbol 14]
KJwc
Wilber Creek and Wolverine quartzite units, undivided (TN003 modified, shown as southern TrPs) [Overprint symbol 13]
KJw
Wolverine unit, quartzite and interbedded shale and siltstone, Late Jurassic or Early Cretaceous (LG002; unit KJcs, TN002; TN003; unit KJw, TN003; unit KJqa, CI002)
Quartzite of the Wolverine quartzite unit (TN003) [Overprint pattern 15]
Sandstone and shale of the Wolverine quartzite unit (TN003)
KJfn
Undivided marine sedimentary rocks, north of Denali Fault (unit KJa, HE002; unit KJs, MC002; NB002) [Compare to unit KJf north of Denali Fault, HE002] [Overprint symbol 14]
KJcg
Conglomerate, sandstone, siltstone, shale, and volcanic rocks (HE002; unit Js, TK002) [Overprint symbol 15
KJfm
Metasedimentary rocks (unit Kw, TY003)
KJf
Flysch sequence, Early Cretaceous and Late Jurassic (unit KJfl, HE002; unit KJf, MM002, south of Denali flt.; unit KJs south of Denali Fault, TL002; unit JKs, LH002; LH003; unit KJu, TY002; unit Km, TY003; units KJs, KJc, KJsh, MG002; unit Ks, Kw, KJu, T
KJfk
Flysch sequence (Early Cretaceous and Late Jurassic, unit KJfk, HE002) [Overprint symbol 13]
Flysch sequence, Late Cretaceous and Late Jurassic (unit KJf, HE002; MM002, both north of Denali flt.; unit KJm, MG002; unit KJs, TL002) [Overprint symbol 14]
KJvr
Vrain unit, pyritiferous shale and minor siltstone; not flysch, equivalent to upper part of Glenn Shale (unit KJv, LG002; part of unit MzPzat, CI002) [Overprint pattern 16]
KJgu
Glenn Shale, upper unit, Early Cretaceous to Middle Jurassic (CY002; KJs, BR002) [Overprint 16]
KJv
Basalt and andesite flows, Whitefish Lake volcanic field, Nyac terrane (units TJwl, KJba, BH002; unit KJv, CA002)
KJvt
Tuffaceous subunit of unit MzPzat (Vrain")
KJcv
Chert and volcanic sequence (Late Cretaceous and(?) Jurassic, I-817, Sanak Islands)
KJrd
Highly altered hypabyssal rhyolite and dacite (unit TJih, BH002)
JTrtv
Pillow basalt (Early Cretaceous and Jurassic, unit KJb, TL002; unit KJb, BH002) [see 5450, 4215, all thought to be same unit]
KJg
Granitic rocks and minor monzonite (grs1, grs2, grs3, grcl, MH002; Kgd, hbqd, hbqm, hbgd, GU002; TJis, BH002; KJi, LC002)
Jmu
Gabbro and diorite (unit KJg, MG002)
Ultramafic rocks (Early Cretaceous or Jurassic, HE002) [Compare to unit Kum (AN002)]
Marine metasedimentary rocks, flysch, Early Cretaceous and Late Jurassic (unit KJs, MH002) [Overprint symbol 15]
Jsu
Jurassic sedimentary rocks, marine, undivided (unit Js, MC002)
Jn
Naknek Formation (B-1969A; AN002; TK002; IL002)
Jn?
Naknek Formation?  Use with overprint pattern 13]
Jnc
Jnn
Jns
Jni
Jnk
Jnn/Jnc
undivided
Jni/Jns
Js
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)]
Jc
Chinitna Formation (AN002; TY002; IL002)
Jkt
Kotsina Conglomerate, Middle and/or Late Jurassic? (unit Jk, VA002; MC002)
Juc
Unnamed marine sedimentary rocks, sandstone, siltstone, mudstone (unit Js, VA002; units Jvc, Jvs, BH002; unit Jk, GO002)
Marine arkosic sandstone and argillite, Togiak terrane (unit Ja, BH002)
Jtxc
Chinitna Formation and Tuxedni Group, undivided (TK002)
Jtx
Tuxedni Group (Bajocian-Bathonian, unit Jt, AN002; TY002; IL002)
Jk
Kialagvik Formation  [Kialagvik Fm. is similar to the lower upper part of the Tuxedni Group]
JTrp
Phyllite and chert, possible Talkeetna stratigraphic equivalent (BH002)
Lumped units 3345, 3405, 3490, 3491, 3495, 3540, 3545 -- NOT USED?
Ultramafic rocks (unit Ju, VA002; UL002)
Jtr
Trondhjemite (AN002; TK002; unit Jt, UL002; GO002; unit Ji2, LC002; IL002) [Overprint pattern 13]
Alkalic gabbro (unit Jgb, HE002)
Ji
Alaska-Aleutian Range batholith, undifferentiated (B-1969B)
Jgr
Granite of Alaska-Aleutian Range batholith (B-1969B; unit Jg, TY002)
Jgd
Granodiorite of Alaska-Aleutian Range batholith (B-1969B; VA002; TK002; AN002; unit Jgd, TY002; unit Ji3, LC002; unit Jqm, IL002)
Jqd
Quartz diorite of Alaska-Aleutian Range batholith (B-1969B; AN002; TK002; unit Ji1, LC002; unit Jqd, IL002)
Jqt
Quartz diorite and tonalite (AN002)
Diorite and Gabbro of Alaska-Aleutian Range batholith (B-1969B; unit JTrd, NB002; units TJik, TJim, BH002; unit Jd, IL002)
Jvab
Andesitic and basaltic flows, flow breccias and epiclastic marine rocks; younger than Talkeetna (unit Jab, BH002; unit Jvs, GO002)
Jan
Anorthosite (unit Mza, NB002)
Gabbronorite, Middle and Early Jurassic (unit Jg, AN002)
Sheared gabbronorite, Middle and Early Jurassic (unit Jgs, AN002)
Ultramafic and mafic rocks, Middle to Early Jurassic (unit Jum, AN002; unit Jm, TY002; unit Jsc, TN003; unit Jg, Jum, GO002; unit Jm, IL002)
Jtu
Cumulate ultramafic rocks (unit Jcu, NL003; unit pc, OP002)
Harzburgite tectonite (unit Jht, NL003; unit ph, OP002)
Ultramafic and mafic rocks, Middle to Early Jurassic (unit Juu, NL003; unit Ju, OP002)
JTrtk
Talkeetna Formation (TK002; unit JTrt, AN002; unit Jtk, VA002; TY002; unit Mzv, TY003; TY005; units Jta, Jts, Jtrd, GU002; unit Jlvs, GO002) [Listed as sedimentary rock unit above; unit varies, essentially volcanic in Cook Inlet region, sedimentary on Al
Hornblende gabbro and leucogabbro (layered) (unit Jgl [now Jtg), VA002; unit shgb, GU002)
Ultramafic rocks, Early Jurassic or older (unit Jum, VA002; unit shgb, GU002)
PPast
Metamorphic and plutonic rocks, undifferentiated, Jurassic, (unit Jpmu, TK002)
Jsch
Schist of Kodiak Island, = Raspberry Schist of Roeske and others (1989).  Equivalent to Seldovia Schist and Schist of Iceberg Lake in Cook Inlet Region (also unit Jgb, VA002)
Migmatite border zone of granodiorite (TK002; unit Jmg, IL002)
Jps
Pelitic schist, Jurassic (unit Jps, AN002; unit MzPzs, TY002) [Seems to be unique unit]
JTrmc
McCarthy Formation, argillite and impure limestone (Early Jurassic-Late Triassic) (unit JTrm, MH002; MC002)
McCarthy Formation, lower member.  Limestone, shale, and chert (Early Jurassic(?)-Late Triassic (Norian)) (unit JTrm, VA002)
JTrsu
Red and brown sedimentary rocks and basalt (Early Jurassic-Late Triassic) (unit JTrrs, HE002)
JTrct
Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?) (unit Jta, TK002; unit JTrta, HE002; unit JTrsv, TL002)
JTrta
Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?), thought largely Triassic (unit JTrt, MD002; unit Kjvs, GO002)
Trk
Kamishak Formation [includes some volcanic rocks] (also unit Trls, Upper Triassic (Norian) limestone on I-1685; TY002; units Trku, Trkm, Trkb, IL002) [Overprint 16]
Trlb
Limestone and basalt sequence, Late Triassic, Norian (unit Trlb, HE002; MM002; TL002) [Overprint 15]
Trlst
Limestone and fine-grained tuff (unit Trl, TY002)
JTrlm
Chitistone and Nizina Limestone units, undivided (unit Trcn, HE002; MC002; unit Trl, VA002; unit Trl, MH002; NB002; unit Trm, MC002 [+ 20,000 hfls])
Limestone and marble (unit Trl, AN002; unit Jls, TK002)
Trsl
Spiculite and sandy limestone, Late Triassic, Norian (unit Trs, MD002)
Trcs
Calcareous sedimentary rocks, Late Triassic, middle(?) Norian and Late Karnian (HE002: MM002; unit Pzsl, TL002; unit Trls, MG002)
Trgl
Glenn Shale, lower unit, Late and Middle Triassic (CY002)
Trcg
Chert and some greenstone (unit Trc, TY002; unit Trvs, GO002)
Trlsb
Limestone of Briun Bay (unit Trb, TY002)  Change to 4020 -- Brium Limestone member of Kamishak Fm.
Conglomerate and volcanic sandstone, Late Triassic, Norian (HE002) [Overprint pattern 13]
Trr
Red beds, Late Triassic (HE002; unit JTrrs, MM002)
Calcareous phosphatic shale and limestone [probably correlative with lower part of Glenn Shale] (unit Trs, LG002)
Black shale and chert, Triassic (unit Trc, LG002) [Overprint pattern 13]
Trss
Shuyak Formation, sedimentary member on MF-1057 (Connelly, 1978), also Trvm, Volcanic and marine sedimentary rocks, in part (Moore, OFR 271)
Trvs
Rhyolitic lava and breccia, tuff, chert, and shale, in Tanana quadrangle, unit eliminated on newer TN003 compilation (unit Trvs, KH003)
Trn
Mafic igneous rocks, Triassic(?) (unit Trm, LG002; KH002; unit Trb, LH003)
Tatina River volcanics, Lower members, pillow basalt and gabbro (units Trs, Trab, MG002; unit Trb, MG003; unit Trb, BH002) [see 5450, 2890, all thought to be same unit]
Tatina River volcanics, Upper member, phosphatic shale and volcaniclastic sandstone (unit lJs, MG002) [see unit KJs, TL002, partial correlation]
Nikolai Greenstone, Late and/or Middle Triassic (HE002; VA002; MH002; MC002; NB002; GU002)
Nikolai Greenstone, Late and/or Middle Triassic, pillow basalt member (unit Trnp, MH002); Pillow basalt flows member, Late Triassic (MH002)
Trn?
Basalt, diabase, and subordinate sedimentary rocks, Late Triassic, Karnian and Norian (unit Trbd, HE002; MM002)
Trv
Upper Triassic volcanic rocks on I-1685
Chulitna Sequence -- volcanic and sedimentary rocks, Late Triassic, Norian (unit Trvs, TL002) [Lumped with units 5010 and 3850]
Trvm
Volcanic and marine sedimentary rocks, in part (Moore, OFR 271)
Trsv
Shuyak Formation, volcanic member on MF-1057 (Connelly, 1978)
Trqd
Afognak pluton = Ja on MF-1057, U-Pb age indicates is probably Triassic
Trgb
Gabbro, diabase, and metagabbro, Late Triassic(?) (unit ga [Nikolai related], MH002; unit Trg, MC002; unit Trum [dikes and sills], MG002; units Trg, Trcg, GU002)
Cumulate mafic and ultramafic rocks, Late Triassic(?) [Nikolai related] (unit cu, MH002)
Trc
Carbonatite (TN004)
Trnm
Schistose metasedimentary and metavolcanic rocks, Late Triassic (unit csv, MH002; unit JTrs, NB002)
Trmg
Biotite-hornblende syenite-monzonite gniess (unit Jtrg, NB002)
Nikolai Greenstone - subaerial basalt flows member, Late Triassic (MH002)
Cottonwood Bay Greenstone (APMAP; unit MzPzg, LH002; unit Trm, TY002; unit Trc, IL002; unit Sc, LC002)
Basaltic metavolcanic rocks, Late Triassic, (unit Trv, TK002)
Metavolcanic, metavolcaniclastic, and subordinate metasedimentary rocks, Late Triassic, late Norian, (unit Trvs, HE002)
Metabasalt and slate, Late Triassic (unit Trvs, TK002)
TrPs
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.  Lumped units Trsc and Ps from Livengood quad (uni
TrMts
Formerly Rampart Group, sedimentary rocks, now considered Tozitna -- Triassic to Mississippian (unit TrMrs, LG002; unit JMms, TN002; unit JMr, TN003; unit PaMc, CI002; unit JPc, BV002)
TrMis
Rampart Group, sedimentary rocks, Triassic to Mississippian (unit TrMs, OP002)
MzPzc
Chert and argillite, Goodnews terrane (BH002) [Overprint pattern 16]
TrPzvs
Volcanic and sedimentary rocks of Talkeetna superterrane, Triassic and Paleozoic (HE002) [Only in cross-sections]
TrPgt
Lower unit Glenn shale and Tahkandit Limestone, undivided (unit TrPgt, CY002; PCs, BR002) [Overprint pattern 15]
TrPas
Flysch-like sedimentary rocks (HE002; MM002)
MzPzvs
Turbiditic volcaniclastic sandstone and argillite, Goodnews terrane (unit MzPzv, BH002)
MzPzas
Arkosic sandstone and slate, Goodnews terrane (unit MzPzs, BH002
TrDs
Marine sandstone, shale, limestone and conglomerate (BH002)
MzPzm
Melange and argillaceous melange, Tikchik and Goodnews terranes (units TrPzm, MzPza, BH002)
TrDv
Chulitna Sequence -- volcanic and sedimentary rocks, Early Triassic to late Paleozoic (unit TrDv, HE002)
TrMica
Chert, volcanic rocks, metasandstone, and limestone (unit TrMc, ID002)
Chert, argillite, and volcaniclastic rocks (unit TrPzc [TrMc], OP002)
JPztm
Mafic and ultramafic rocks, undivided (Jurassic? and/or Paleozoic?) (unit Pzmi, RB005)
MzPzi
Volcanic rocks, unknown age (unit vr, NL002; unit MzPzi, LH003)
JTrtmu
Rampart Group, igneous rocks, Triassic to Mississippian (unit TrMrv, LG002; no label TN003; unit MzPzc, CI002; CY002; Pzv, BR002) [Overprint 16]
JMtru
Undivided Tozitna (Rampart) in TN003
JMtu
Mafic, ultramafic, and sedimentary rocks of the Tozitna sequence, undivided (Jurassic to Mississippian) (as coded, unit TrMb, OP002; NL003; units mc, mi, RB002; units Pzrgmsv, Pzrgs, RB005; unit JPv, BT002)
JMab
Basalt and diabase, Permian to Jurassic; Chiefly dark-greenish gray basalt flows and diabase intrusives (SH002; SE002; HU002; JPb, MZ002; RB003; RB004; unit TrPv, KH003; unit JMbc, TN003; unit Jv, HU002: unit JPv, BV002)
Jaum
Ultramafic rocks, Permian to Jurassic (MZ002; TN002; RB004; unit Jmu, TN003; unit JPu, BT002)
Undivided intrusive rocks, Mesozoic or Paleozoic (TL002)
MzPzg
Granodiorite of Rainbow Mountain Early Cretaceous and/or Miss. (unit grrm, MH002)
Diorite (unit MzPzd, CI002)
Gabbro and quartz diorite, Mesozoic and/or Paleozoic (unit MzPzg, TL002; unit MzPzm, TY002; unit MzPzi, MG002; MG003)
MzZum
Undivided dunite and serpentinite, Mesozoic or Paleozoic (TL002; unit MzPzum, TY002; part of Jsc, TN003, Pzum, TN004) [TL002 = Chulitna?]
Jium
Hartzburgite tectonite of Mount Hurst (unit ph, OP002)
Metamorphic rocks, undivided (unit JPzm, AN002)
Fine- to medium-grained mylonitic metasedimentary rocks, calc-schist, marble, quartz-mica schist (unit as, MH002)
Pe
Metasedimentary rocks sequence, overlying 100-m-thick chert sequence and principally (700 m) black argillite containing minor sandstone and limestone (unit TrPam, HE002) [Overprint pattern 13]
Quartz-muscovite-feldspar schist of Metamorphic Complex of Gulkana River (unit qmfs, GU002) [Overprint pattern 348]
Dadina Schist (unit ds, GU002) [Overprint pattern 348]
Schist and amphibolite, Late Cretaceous or older (unit sa, MH002) [Overprint pattern 14]
Mzpca
Quartz-mica schist, calc-schist, and amphibolite, Late Jurassic or older (unit msh, MH002) [Overprint pattern 15]
Schist, quartzite, and amphibolite, Triassic(?) (unit sq, MH002) [See also MH002 units mig and mgsh.  Lithologically similar rocks on strike in Healy quad have Penn to Trias conodonts, see unit Trcs?] {Mzmm}
TPza
Raven Creek Hill unit, metasedimentary gneiss, mica schist, phyllite..., Mesozoic or Paleozoic (unit MzPzr, LG002; unit Pzsr?, TN002; KH003)
Metamorphic complex, low- to medium-grade greenschist and amphibolite, Late Jurassic or older (unit mmp, GU002) [see unit 5920, Strelna MC from Valdez] [Overprint pattern 348]
Argillite and metagraywacke, Late Jurassic or older (unit ma, MH002) [Overprint pattern 15]
MzPzaq
Argillite and quartzite (CI002)  Deleted unit in revision.
Phyllite, Late Jurassic or older (unit mph, MH002) [see Pzp, #5540] [Overprint pattern 15]
KJvr?
Phyllite, amphibolite, greenstone, and diorite, Mesozoic or Paleozoic (LG002) Lumped with Vrain [Overprint pattern 16]
MzPzp
Chloritic phyllite, Goodnews terrane (BH002)
Kakhonak Complex (Jurassic, Triassic and older?) (B-1969B; unit JPu, TY002; unit JPk, IL002; unit MzPzs, LH002, tentative)
MzPzmc
Metachert and phyllitic quartzite, Goodnews terrane (unit MzPzm, BH002)
MzPzb
Metabasalt and minor metachert (BH002; unit MzPzm, LC002, tentative)
JPaur
Uranatina Metaplutonic Complex, Jurassic(?), Layered quartz gabbro; Amphibolite and orthogneiss (units Jlg, Jag, VA002; units sqm, sqd, sgd, shd, ag, GU002) [Changed per Winkler, 1998]
MzPmi
Metamorphosed igneous rocks, post-Carboniferous (unit mi, NL002)
MzPzo
Ophiolitic metamorphosed mafic rocks (unit MzPzb, UL002)
Pzrmi
Metamorphosed mafic igneous rocks (unit Pzm, TN003) [Overprint pattern 13]
Serpentinite, Mesozoic and/or Paleozoic (unit MzPzu, TL002; TC002)
DCd
Dillinger stratigraphic sequence, undivided; sedimentary rocks of Dillinger River, lime mudstone and shale, etc, Paleozoic (unit Pzd, TL002; unit Pzu, LH002; LH003; unit Pzdu, LH004, part of unit Pzl, SM002; unit DOsl, MD002)
Pzld
Massively bedded limestone, dolomite, and schist, Paleozoic (unit Pzl, CA002)
Pzls
Undivided limestone and schist, Paleozoic (unit Pzls, CA002) [Overprint pattern 13]
Pzls2
Limestone and quartz-mica schist, Paleozoic (unit Pzs, CA002) [Overprint pattern 14]
Pzlc
Limestone and chert (unit Pzl, CI002) [Overprint pattern 708]
Pzrm
Carbonates, early Paleozoic (OP002; unit Pzc, RB002)
PPl
Limestone?, Permian-Pennsylvanian? (unit PPl, LH003)
Pzqa
Quartzite and argillite, Late Paleozoic (CY002) [Overprint pattern 14]
Pzca
Chert and argillite, Late Paleozoic (CY002) [Overprint pattern 15]
Pzsu
Clastic rocks, undivided, Paleozoic(?) (CY002) [Overprint pattern 15]
JCmd
Mystic and Dillinger stratigraphic sequences, undivided (Triassic to Ordovician), undivided sedimentary rocks, typically flysoid (unit Pzus, TL002; units Pzc, DOs, DOs?, MM002; units DOs, DOs?, HE002) [Overprint pattern 348]
JDm
Mystic stratigraphic sequence, undivided (Triassic to Devonian) (unit Pzmu, LH004)
ls
Limestone, unknown age, and lithologic character (various units, CI002)
ch
Chert, unknown age, and lithologic character (various units, CI002)
Pzvs
Volcanic and sedimentary rocks, middle or late Paleozoic (unit Pzv, TL002; unit Pzvs, KH003)
Pat
Andesitic volcanic rocks (correlated with Tetelna volcanics), Early Permian? and Pennsylvanian (HE002)
Diorite (unit Pzd,BD002; TC002)
Pillow basalt, middle or late Paleozoic (unit Pzbs, TL002) [see 2890, 4215, all thought to be same unit]
Pagb
Gabbro and leucogabbro, Late Paleozoic, Permian to Pennsylvanian (unit Pzg, VA002; unit Pgo, MC002; unit Pzg, NB002) [Overprint pattern 248]
Pzug
Ultramafic and mafic rocks and greenstone (unit Pzum, NB002; unit Pzmu, CY002)
Pze
Eclogite see Chatanika unit [5510], which includes eclogite in Livengood quad (CI002)
Chatanika unit, allochthonous garnet-bearing qtz-bio-mus schist and quartzite, Paleozoic (LG002; unit PzpCms, CI002; unit Pzs, BD002)
Dm
Marble, Paleozoic (unit Pzm, MZ002; unit Pzl, TN003; unit Dl, HU002; unit Pzm, BT002; BV002)
TrMtqp
Calcareous siltstone and sandstone and phyllite (unit Pzc, KH003; unit TrMq, NL003; unit Pzrp {Ruby phyllite}, RB005) [Overprint pattern 16]  Added PzpCq, MZ002
PMpc
Phyllite, calcareous phyllite, and marble (unit uPzs, MG002) [Overprint pattern 16]
Meta-hornblende andesite, Late Paleozoic(?); Amphibolite and quartz diorite, Middle to Early Jurassic metamorphic age (unit mha, MH002; GU002; unit Jma, AN002; unit Jam, TK002) [Compare with Pzma] [Overprint pattern 348]
PDms
Greenish-gray siliceous slate, quartzite, chert, and greenstone, Perm-Miss. (unit Pzs, LG002; unit Pza, CY002; unit uPzc, MG002)
MDtm
Cataclastic rocks, Totatlanika Schist (unit Pzc, BD002) [Overprint pattern 238]
Metamorphic and sedimentary rocks, black and greenish-gray siliceous slate, chert siltstone, debris flows, greenstone, Permian to Devonian(?) (LG002; unit Pzar, TN002) [Overprint pattern 348]
Slana Spur Formation, marine calcareous and noncalcareous volcaniclastic rocks, Early Permian-Middle Penn. (unit PaPs, MH002) [Overprint pattern 14]
Slana Spur Formation, calcareous volcaniclastic rocks, Early Permian-Middle Penn. (unit PaPsu, MH002) [Overprint pattern 14]
Metamorphosed Skolai Group (unit PPsm, MC002) [Overprint pattern 348]
PPasc
Slana Spur Formation, volcaniclastic rocks, Early Permian-Middle Penn. (unit PaPsl, MH002; unit Ps, NB002; unit PPs, GU002) [equivalent to part of Station Creek Fm.]
Pzvc
Volcanic rocks, volcanic sandstone, cherty argillite, quartzite, and tuff (NB002)
JPzsgs
Greenstone (CI002)
Greenstone (unit mcb, GU002; unit Jgs, TK002) [Overprint pattern 348]
Pzk
Keevy Peak Formation, schist, quartzite, and phyllite, early Paleozoic (unit Pzk, HE002; MM002; unit Pzq, BD002; CI002; unit Pza, TC002)
Pzk?
Keevy Peak Formation, schist, quartzite, and phyllite, early Paleozoic (unit Pzk?, HE002; unit PzpCg, TC002)
Pzkcp
Calcareous and phyllitic rocks (unit Pzm, CI002; BD002) [Overprint pattern 16]
Pzlsl
Schist, phyllite, limestone, and greenstone (KH002)
Pzsc
Spruce Creek sequence of Kantishna Hills from Bundtzen thesis (unit Pzsc, MM002); Muskox sequence of Newberry and others (1996), FB004 [Overprint pattern 13]
PzZyg
Gneiss (Big Delta gneiss dome, unit Pzg, BD002)
Metamorphic complex of Gulkana River, amphibolite (unit am, GU002)
Metamorphosed ultramafic rocks (unit Pzu, BD002; unit Pzp, CI002; unit Pzmg, GO002)
Psu
Sedimentary rocks, undivided, Permian.  Sandstone, siltstone, and quartzite (unit Pu, CY002) [Overprint pattern 13]
Pls
Unnamed Permian limestone on I-1685; from Hanson (1957) (unit Pl, GO002)
Ptl
Tahkandit Limestone, massive bioclastic limestone (unit Pt, CY002) [Overprint 13]
Psc
Step Conglomerate, Permian, chert and quartzite clast pebble- and cobble conglomerate (unit Ps, CY002; Pq, BR002) [Overprint pattern 14]
Ps
Argillite, sandstone, sandy limestone, and minor conglomerate (LG002; TN002; KH003; unit TrPs, TN003) [Overprint pattern 238]
Pig
Graywacke, conglomerate, and mudstone, Permian(?) (unit Pg, RB005) [Overprint pattern 14]
Ph
Hasen Creek Formation (MC002)
Phls
Limestone of the Hasen Creek Formation (unit Pl, MC002; unit Pel, NB002)
Pv
Permian(?) volcanic rocks (agglomerate) from Hanson (1957) (unit Pv, GO002)
Greenstone and chert (BD002) [Overprint pattern 348]
Pmi
Shallow-level stocks, dikes, sills and small plutons, Early Permian? (unit Pi, MH002)
Pmgi
Monzonitic-granitic complex (unit Pm, MC002; units PPf, PPp, PPg, GU002)
PPad
Diorite complex, diorite, granodiorite, and altered diabase and gabbronorite (units PPd, PPa, GU002
Strelna Metamorphic complex, low- to medium-grade greenschist and amphibolite, Late Jurassic or older (units Ja, Psm, VA002) [Overprint pattern 348]
Pmg
Mankomen Group, undivided (unit Pm, NB002) [equivalent stratigraphically to Skolai Group]
Eagle Creek Formation, Early Permian, marine argillite and limestone, lower greenschist facies (MH002; NB002) [equivalent to Hasen Creek Fm.] [Overprint pattern 13]
Skolai Group, marble, Early Permian to Middle Pennsylvanian (unit Pzm, VA002; unit Pm, MC002; units Jmb, Jmrb, TK002) Marble, lenticular interbeds within basaltic to andesitic metavolcanic sequence (Pzv), Early Permian(?) and Pennsylvanian(?), (unit Pls,
Quartzite, phyllite, micaceous quartzite, marble, inferred Permian age (BD002)
JPsu
Serpentinized ultramafic (unit Pu, BD002; unit Pzp, CI002)
PDsc
Sheep Creek Formation and correlative largely siliciclastic units of the Mystic stratigraphic sequence (Permian to Devonian); Conglomerate of Mount Dall, Middle Pennsylvanian (unit Pad, TL002; unit PDs, MG002; units PDs, uPzs, uPzac, MG003; unit Ps, MD00
PaDcb
Calico Bluff and Ford Creek Formations, undivided (unit PaDu, CY002) [Overprint pattern 15]
Chert and limestone, chiefly chert, Penn and Miss (unit PaMc, MD002)
PPagi
Granitic plutons south of Denali Fault (MH002)
Paum
Ultramafic rocks (unit Pu, MC002)
Tetelna Volcanics, volcanic flows, etc., lower greenschist facies (MH002; units Pzv, PPt, NB002; unit Pt, GU002) [Overprint pattern 14]
MDl
Fossiliferous limestone, Miss. (unit PaMcl, MD002)
PMl
Younger limestones of Mystic stratigraphic sequence (Mississippian) (LH004) [Overprint pattern 348]
Limestone, Mississippian to Devonian (unit MDl, OP002; CY002; Dl, BR002; unit MDm, BH002)
Chert and argillite (Mississippian and Devonian (unit MDc, RB003; RB005; unit Kca, RB002, tentatively)
MDfl
Ford Lake Shale, laminated siliceous shale and chert (unit MDf, CY002) [Overprint pattern 13]
MDv
Massive and pillowed basalt and other volcanic rocks (BH002) [Overprint pattern 348]
MDt
Totatlanika Schist, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian, (HE002; MM002; FB002; unit Pzsg, BD002; very tentatively unit Pzu, TC002)
MDt?
Totatlanika Schist?, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian, (HE002; unit PzpCgr, CI002)
MDyao
Augen gneiss and schist, Mississipian or Devonian intrusion age (unit lga, MH002; unit PzpCa, BD002; unit Da, CI002) [overprint pattern 16]
MDrao
Augen gneiss and schist, Mississipian or Devonian intrusion age (unit Dao, TN003) [overprint pattern 16]
Mgq
Globe quartzite unit  Similar to Keno Hill Quartzite in Yukon (unit Mg, LG002; Vitreous quartzite unit of MzPzaq, CI002; unit Mq, TN003) [Overprint pattern 238]
Dp
Phyllite, slate, silicious siltstone, and argillite (KH002; unit Pzcs, KH003; unit DOs, KH004).  Phyllite, unit Pzp, BT002; unit Dp, HU002; tentatively unit JDu, HU002; unit Dp, BV002
Ruby marble (unit Pzm, RB005) [Dubious age call?, reported in source as Paleozoic?]
Dtr
Troublesome unit, rhythmically interbedded cherty argillite to chert and thin beds of slate, Devonian(?), also McCann Hill Chert (unit Dt, LG002; unit Pzvs, TN002; unit Pzc, CI002; unit Dm, CY002) [Overprint pattern 248]
Dsc
Shale and chert of Mystic stratigraphic sequence (Devonian) (unit Dsc, LH004) [Overprint pattern 14]
Dmo
McCann Hill chert and Olgilvie Formation, undivided (unit Dmo, CY002) [Overprint pattern 14]
DOmr
McCann Hill chert and Road River Formation, undivided (unit Dmo, CY002) [Overprint pattern 13]
Dq
Quail unit, conglomerate, phyllite, calc-phyllite, siltstone, and sandstone, Late Devonian(?), also Nation River Formation of Charley River quad. (unit Dq, LG002; unit Dnr, CY002)
Dq?
Calcareous clastic rocks (unit Pzc, TN002); also Devonian sandstone and shale (unit Dss, BV002)
Dq2?
Quartz wacke (unit Pzw, TN002; KH003; unit Zw, TN003)
Dnrc
Conglomerate, Nation River Formation (unit Dnrc, CY002) [Overprint pattern 15]
DSl
Limestone, Late Devonian (LG002)
Dml
Carbonate rocks of the lower part of the Mystic stratigraphic sequence (Devonian and Silurian) (unit Dl, TL002; units lDl, lDd, uDl, Dls, MG002; unit uDl, MG003; unit DOs(ls), HE002; MM002; units lDl, uDl, LH004) [Overprint pattern 13]
Dcb
Cascaden Ridge unit, shale, siltstone, sandstone, conglomerate, and minor limestone, Middle Devonian (unit Dc, LG002), also Cascaden Ridge, Beaver Bend combined correlative units (unit Pzcg, CI002; unit Dc, CI003?, some chert CI002)
Limestone (Late Devonian to mid-Silurian) (unit Dls, KH002, unit Dl, KH004; units Dlr, Dld, Ml, TN003; unit Dl, CI002; unit Pzl, BV002)
Ds
Schwatka unit -- Limestone, Middle and Early Dev. (unit Dsl, LG002; CI003; units Do, Dwl, CY002)
DSca
Barren Ridge limestone, calcarenite, calcareous siltstone, and limestone (unit DSl, MG002; MG003; LH004) [Overprint pattern 14]
DSlc
Lost Creek unit, lime mudstone and wackestone, Devonian and Silurian (unit DSl, LG002; unit Pzmr, TN003; Dl, CY002; Sl, BR002)
DSls?
Limestone, dolomite, greenstone, and chert (unit Pzlc, TN002; unit Pzlc, KH003)
DSls
? LH003
DSwc
Whirlwind Creek Formation and unnamed correlative units (Late Devonian, Frasnian through mid-Silurian, Wenlockian), reefy limestone and dolomite (unit DSl, MD002; MM002; units lDl, lDd, mDl, Sla, SDlw, MG003; unit SDlw(h), LH004) [Overprint pattern 14]
DSt
Tolovana Limestone, Middle Devonian to Early(?) Silurian, (LG002; FB002; KH002; KH004)
DSt?
Limestone, greenstone, and schist (unit Pzl, TN002; KH003; unit DSl, CI002)
DCru
Road River Formation, Hillard Limestone and other units, undivided (unit DCu, CY002; DCl, BR002)
Dsv
Schwatka unit, mafic volcanic rocks, Middle and Early Devonian (LG002; CI003) [Overprint pattern 348]
Dwv
Woodchopper Volcanics, amygdaloidal basalt, pillow basalt, ..., equivalent to Schwatka unit? (unit Dwv, CY002) [Overprint pattern 348]
Ddg
Diorite-gabbro (unit MzPzi, NB002)
Dkm
Kaskawulsh Group of Kindle, mainly marble (unit Pzk, MC002)
Dpmc
Phyllite and metaconglomerate (unit Dp, NB002)
Dyv
Fine-grained schistose volcanic rocks and phyllite, Devonian extrusion age, (unit hgv, MH002)
Dy
Yanert Fork sequence, thick sequence of marine metasedimentary and metavolcanic rocks, Late Devonian (unit Dy, HE002)
Medium-grained granitic gneiss, Devonian intrusion age (unit mg, MH002)
Undifferentiated metasedimentary rocks, Late Devonian (MM002, equivalent to units DMf, Dmb, and Dms of HE002) [Overprint pattern 13]
Pzsc?
Metasedimentary rocks, Late Devonian (HE002; NB002) [Overprint pattern 13]
Metabasalt and subordinate metasedimentary rocks, Late Devonian (unit Dmb, HE002; unit jcv, MH002; unit Dg, NB002) [Overprint pattern 13]
Dmgs
Serpentinite, basalt, chert and gabbro, Late Devonian (unit Dsb, HE002; MM002)
Dmg
Metagabbro, Late Devonian(?) (HE002)
DPzmp
Pelitic, calcareous, and quartz-feldspar metasedimentary rocks, Devonian or older, (unit Pzs, NB002)
Dys
Fine-grained, schistose metasedimentary and metavolcanic rocks, Devonian or older, (unit hgs, MH002) [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 o
DSmdl
Thin-bedded limestone (unit Sl, TL002)
Spf
Paradise Fork Formation and correlative units (unit Sls, MD002; unit Ssh, MG003; Sls, TA007 [Overprint pattern 13]
Sa
Argillite (LH003) Gone
Ss
Micaceous calc-sandstone (LH003) Gone
Stc
Terra Cotta Mountains sandstone, sandstone and graptolitic shale (units uSsl, mSl, mSvs, mSs, MG002; unit mSs, MG003; unit mSm, LH004) [Overprint pattern 238]
SZa
Amy Creek unit, siliceous dolomite, chert, and basaltic greenstone, minor limestone, shale..., Silurian(?) to Late Proterozoic (unit SZa, LG002; unit PzpCb, CI002; unit Za, TN003)
SZa?
Dolomite and argillite (unit DSd, CI002)
Ont
Novi Mountain and Telsitna Formations, and unnamed correlative units, massive dolomite and limestone, Late to Middle Ordovician (units Od, Osl, MD002; unit Ol, RB002; units OCm, Ol, mOl, uOll, uOl, lOlb, MG003) [Overprint pattern 16]
OCjr
Jones Ridge Limestone, massive oolitic, typically silicified limestone (unit OCjr, CY002; COl, BR002) {overprint pattern 13]
SCpl
Post River Sandstone and Lyman Hills Formations and correlative units, silty limestone and siltstone, Early Ordovician (units lSl, SOsh, OCls, MG002; units Clm, SOsh, OCls, MG003; unit Pzc, MD002; unit Oc, TL002; units OCls, SOsh, LH004) [Overprint patte
Ofc
Fossil Creek Volcanics, undivided -- Alkali basalt, agglomerate, and volcaniclastic conglomerate (unit Ofv, LG002; northern part of unit SOs, CI002; unit Ofc, TN003); Shale, chert, and limestone intruded by gabbro, unconformable on Wickersham (unit Ofs,
Oc
Ordovician chert, including Livengood Dome Chert, chert, siliceous slate and rare greenstone and limestone, Late Ordovician (protolith) (unit Old, LG002; unit nc, FB002; unit Oc, TN002; KH002; KH003; unit DOc, KH004; unit Old, CI002; unit Olc, TN003; uni
Oldl
Limestone marker bed within Livengood Dome Chert (unit Pzll, TN003)
CZtu
Tindir Group, upper part, Early Cambrian and Late Proterzoic argillite, quartzite, dolomite, dolo-arenite... (unit CZtu, CY002; pCp, BR002) [Overprint pattern 13]
CZwl
Wickersham unit -- Limestone, Early Cambrian and Late Proterozoic (unit CZwl, LG002)
Ultramafic and mafic rocks and greenstone, Cambrian and/or preCambrian (unit CZum, LG002; unit Pzug, CI002; pCi, BR002)
CZw
Wickersham unit -- Grit, Early Cambrian and Late Proterozoic (LG002; unit PzpCa, CI002; unit Pzw, TN003; unit PzpCs, MG002; Wickersham units in KH, MD, MM)
CZwa
Wickersham unit -- Maroon and green argillite, Early Cambrian and Late Proterozoic (unit CZwa, LG002; unit ng, FB002; unit Cal, TN002)
DZn
Undivided shallow marine carbonate units of Holitna Basin area, late Proterozoic to Devonian (part of unit Pzl, SM002; unit Pzh, LH004) [Overprint symbol 708]
CZds
Oolitic limestone, Khuchaynik Dolomite of Babcock and others (unit XCl, MG003) [Overprint pattern 238]
Zwg
Grit, Late Proterozoic, bimodal quartzite, gray and olive-gray greenschist facies argillite (LG002, unit PzpCgq, CI002; unit Cqs, KH002; unit Pzsq, KH003)
Various limestone bodies scattered through PzpC units in Circle quadrangle (CI002) [Recode northern units to 8000]
Mafic igneous rocks, Paleozoic and/or Late Proterozoic (unit PzZm, LG002; unit PzpCm, NL003)
YZnm
Nixon Fork metamorphic basement, undivided (unit mcb, RB002; unit PzpCm, RB003) [Overprint pattern 995]
PzZrqs
Ruby quartz-mica schist (unit mca, RB002; units PzpCsg, PzpCs, RB005; unit PzpCs, OP002, also 2 polygons shown as PzpCs or TrMc on OP002 [class 901]; units Pzs, Pzg, BV002) [Overprint pattern 998]
PzZlg
Metamorphic complex, crystalline limestone and greenstone, older unit, Paleozoic (Ord-Dev) or preCambrian (units mca(?), mc/mcl, RB002; unit Pzc, BV002)
YZnc
Calc-schist and impure marble, early Paleozoic or preCambrian (unit PzpCc, MD002, very tentatively unit pCl, GO002) [Overprint pattern 708]
Pzydm
Dolomite and marble (unit PzpCd, CI002) [Overprint pattern 13]
Metamorphic complex, crystalline limestone, Paleozoic (Ord-Dev) or preCambrian (unit mcl, RB002; NL002) [Overprint pattern 13]
Metamorphic complex, schist, crystalline limestone, quartzite, greenstone, slate, and phyllite, Paleozoic (Ord-Dev) or preCambrian (unit mc, RB002; unit mc, NL002; unit PzpCs, OP002; unit PzpClg, ID002)
PzZysa
Pelitic schist, early Paleozoic or preCambrian (unit PzpCs, CI002; unit PzpCm, CY002; units ms, lgs, MH002)
PzZpg
Sillimanite gneiss subunit, pelitic schist (unit PzpCs, CI002)
PzZaqs?
Pelitic schist, early Paleozoic or preCambrian (unit Pzsv, TL002) [Overprint pattern 996]
YZns
Pelitic schist of Nixon Fork basement (unit PzpCp, MD002) [Overprint pattern 15]
Metamorphic complex, schist and quartzite with some crystalline limestone, younger unit, Paleozoic (Ord-Dev) or preCambrian (unit PzpCs, NL003; unit PzpCc, NL003)
PzZms
Mafic schist (unit PzpCm, CI002)
YZnv
Felsic metavolcanic rocks of Nixon Fork baseement (unit PzpCv, MD002) [Overprint 16]
PzZrpg
Gneiss and quartzite of the Ruby crystalline complex, Paleozoic or preCambrian (unit PzpCn, MZ002; unit PzZqg, TN003; unit PzpCg, RB004; unit Pzpg, BV002) [Overprint 16]
PzZygs
Gneiss, schist, and quartzite of the Yukon-Tanana crystalline complex (unit PzpCs and quartzite subunit, CI002; unit PzpCg, BD002; unit PzpCb, TC002) [Overprint pattern 13]
Ytl
Tindir Group, lower part, stromatolitic limestone (unit Ytl, CY002; EA002) [Overprint pattern 14]
PzZyqs
Greenschist facies muscovite chlorite schist, quartzite and phyllite [Fairbanks schist unit - undivided] (LG002; unit PzpCsq, TN002)
Fairbanks schist unit - Cleary subunit, white felsic schist, micaceous quartzite chloritic or actinolitic greenschist, greenstone and marble (LG002, magnetic chlorite schist subunit of unit PzpCqm, CI002)
PzZaqs
Pelitic and quartzose schist of the Alaska Range (unit bc, FB002 (southern part); unit jcs, MH002 [class 7401]; unit PzpCp, HE002, MM002) [Overprint pattern 996]
Quartzite subunit of quartzite and quartzitic schist (unit PzpCq, CI002)
Calc-silicate and marble subunit of quartzite and quartzitic schist (unit PzpCq, CI002)
Pelitic and quartzitic schist of the Tanana quadrangle (unit Pzs (Pzqs), TN003; units PzpCs, PzpCq, MZ002; unit PzpCm, RB002; RB003; RB004; unit Pzs, BT002) [Overprint pattern 997]
Greenschist subunit of quartzite and quartzitic schist (unit PzpCq, CI002)  [Not found yet on map.]
Quartzitic and pelitic schist of the Yukon-Tanana crystalline complex (unit bc [northern part], FB002; units PzpCsq, PzpCs, BD002; unit PzpCq, CI002)
Xi
Idono Complex, Early Proterozoic, metaplutonic rocks, amphibolite, and minor metasedimentary rocks (ID002)
Xo
Amphibolite facies orthogniess and minor amphibolite and pelitic schist.  Kanektok or Kilbuck terrane (BH002, unit pCk, GO002)
Altered zones
Hornfelsed zones.
Basalt of Togiak River Valley, basalt flows (GO002; KW002)
QTmb
Semiconsolidated marine beach deposits (GO002)
Thick, widespread, marine unit consisting of volcanic and sedimentary rocks ranging in age from Early (?) Ordovician to Early Cretaceous. (GO002)
Tim
Dark-colored dikes and sills consisting of diabase, basalt, dioritic and gabbroic mafic intrusive rocks (GO002)
Tsy
Syenite of Mount Fairplay (unit Ts, TC002)
TKmv
Flat-lying to gently dipping mafic flows of andesite and basalt, and volcaniclastic deposits of andesitic and basaltic tuff and conglomerate (unit TKm, ST002)
TKum
Mafic and ultramafic intrusive rocks including pluglike body of augite andesite porphyry and a small dikelike body of augite peridotite (unit TKi, HU002)
JTrg
Granodiorite of Taylor Mountain batholith and related(?) rocks (units JTrg, Mzg, TC002)
Jsy
Hornblende syenite porphyry (unit MZs, TC002)
Sandstone, shale, and conglomerate deltaic deposits (unit Knm (west) KT003; unit Kn, KT003; unit Ksu, NL003; unit Ks, UL002; NR002)
TrMtsu
Mafic and sedimentary rocks (TN002)
Kgc
Contaminated granitic rocks; Dark, fine- to coarse-grained contaminated granitic rocks with abundant mafic schlieren (unit Kgc, BV002)
JPe
Banded dark-green, gray, and red eclogite and banded amphibolite.(unit JPe, BV002)
Dg
Dark-greenish-gray fine-grained impure graywacke (unit Dg, BV002; unit Pzg, BT002) [Overprint pattern 16]
Pzcs
Schistose calcareous siltstone, limestone, and greenish tuffaceous rocks.[Overprint pattern 708]
Pzsb
Light-brown weathering calcareous schist interbedded with gray quartz-mica schist and marble.  Brooks Range schist belt. (unit Dcs, BT002 actually in Wiseman quadrangle)
Tvei
Known or strongly suspected fine-grained hypabyssal intrusive rocks of unddifferentiated unit Tfu (unit Tfi, HC002) [Overprint pattern 13]
Kqd
Quartz diorite (units Ki12, Ki6, Ki4, LC002)
Kgdc
Cataclastic or mylonitic granodiorite (unit Ki9, LC002) and quartz diorite (unit Ki5, LC002)
KJms
Marine metasedimentary rocks, flysch, Cretaceous(?) and Jurassic(?) (unit KJs, IL002) [Overprint symbol 15]  Possibly Middle Jurassic in age, may correlate with rocks in the Nushagak Bay quadrangle
Tpb
Intricate Basalt, olivine-augite basalt (unit Tib, IL002)
Tpgu
Gibraltar Lake Tuff -- Upper member (unit Tglu, IL002)  Overprint 13
Tpgl
Gibraltar Lake Tuff -- Lower member (unit Tglu, IL002)  Overprint 14
Toqd
Quartz diorite (Unit Tqd, IL002) Overprint 13
Ksy
Hornblende and pyroxene monzonite and syenite.  Minor biotite quartz monzonite (Kg, CA002; Ks2, SH002) [Overprint 14].
Pzpq
Chiefly dark phyllite and fine-grained quartz-mica schist (SH002; SE002) [Overprint 15]
Kbd
Dark greenish- to reddish-brown, fine-grained, spilitic amygdaloidal pillow basalt flows and dark-greenish-gray, medium- to coarse-grained, spilitic diabase intrusive rocks. (SH002) [Overprint 16]
Jsp
Serpentinite
Kns
Chiefly leucocratic, medium-grained nephelene syenite and related mafic alkaline rocks (SE002; SH002) [Overprint 348]
Chiefly leucocratic, medium-grained, gniessic, muscovite-biotite albite granite (SH002) [Overprint 14]
DOtu
Metasedimentary and metavolcanic rocks of Tukpahlearik Creek, undivided (SE003) [Overprint 16]
Kd
Basaltic andesite dikes (Kd, SV002)
Ynqd
Meta-quartz diorite (pCm, RB007)
MzPzq
Seward terrane?  Quartzite, carbonate rocks, schist, and amphibolite (NR002) [Overprint pattern 14]
Zgr
Granitic rocks, possibly younger than preCambrian (pCg, BR002) [Overprint pattern 13]
Quartzite of the Ruby crystalline complex, Paleozoic or preCambrian (unit PzpCq, MZ002) [Overprint 16]
Kft
Shoshonitic flows and tuffs (unit Kft, UL002)
Kccc
Conglomeritic facies of a mixed sequence of calcareous graywacke, calcareous mudstone, volcanic graywacke, and volcanic conglomerate (on unit Kcv, CA003;  or on unit Kcc, NR002).  [Overprint pattern 238]
Kcgc
Conglomeritic facies of rhythmically interbedded, medium-gray, yellowish-orange weathering, fine-grained to gritty highly calcareous graywacke and micaceous, calcareous mudstone (Unit .Kcg, CA003; NR002) [Overprint pattern 238]
Kvcc
Conglomeratic facies, Volcanic conglomerate and breccia [Overprint symbol 238]
Kvci
Intricately intruded areas of Volcanic graywacke and mudstone, late Early Cretaceous (Albian) [Overprint symbol 348]
Ksi
Intricately intruded areas of sandstone, shale, and conglomerate deltaic deposits (unit Ks, UL002; KT002; NL003) [Overprint symbol 348]
Kccf
Undifferentiated sedimentary rocks -- conglomerate facies (NL004) [Overprint symbol 238]
OChl
Hillard Limestone (Unit OCh, EA002) [Overprint pattern 14]
Ca
Adams Argillite (Unit Ca, EA002) [Overprint pattern 13]
pCq
Quartzite and argillite (Unit pCq, EA0020 [Overprint pattern 15]
Cf
Funnel Creek Limestone (Unit Cf, EA002) [Overprint pattern 16]
Yts
Tindir Group, dolomitic sandstone and shale member (Unit Yts, EA002) [Overprint pattern 15]
Ytb
Tindir Group, basalt and red beds member (Unit Ytb, EA002)
Ytb?
Greenstone (Unit pCg, EA002)
QTf
Faneto Formation (AT002)
QTqk
Quartz keratophyre dikes (AT002)
QTad
Porphyritic dikes and stocks of hornblende andesite and dacite (AT002)
Volcanic rocks, including basaltic, spilitic, and keratophyric lava and tuff.  Pillow lava very common. (AT002)
Tagr
Albite granite (AT002)
TMzf
Basement rocks - fine-grained banded sedimentary rocks (AT002)
TMzc
Basement rocks - coarse-grained and conglomeratic sedimentary rocks (AT002)
Orca Group -- melange (TKm, VA002)
Kvichak Stade  (younger advance), Brooks Lake Glaciation (Qblk, CB002)
Migmatite consisting of schist, gneiss, tonalite, and granodiorite (Tmg, SD002)
Biotite-quartz-feldspar gneiss (TKgn, SD002)
Biotite-hornblende and hornblende-biotite tonalite, quartz diorite, and minor granodiorite (TKto, SD002)
Undivided Metamorphic Rocks - phyllite, schist, [para]gneiss, [ortho]gneiss, and marble (Kgn, SD002)
Chlorite phyllite and slate (Kp, SD002)
Greenschist and greenstone (Kgs, SD002)
Marble and calc-silicate granofels (Kmb, SD002)
Biotite schist (Kbs, SD002)
Hornblende schist and amphibolite (Khs, SD002)
Sab
Algal boundstone (TA007) [Overprint symbol 14]
Olss
Tcherskidium-bearing limestone (TA007)
Ols
Lime mudstone (TA007)
Oab
Algal boundstone and lime mudstone (TA007)
Os
Brown and gray 'chippy' shale, silty shale and silicified limestone (TA007) [Overprint symbol 15]
PzZun
Undifferentiated sedimentary and (or) slightly metamorphosed sedimentary and igneous rocks (YT003)