°ÁSYMBOLNCLASSNNSACLASSNLABELCDESCRIPTIOCþ 667 1680 TDg Gabbro, undifferentiated, Tertiary to Devonian age [Ign] (unit TDg, MD002; unit TMg, OP002) 5 99 bu Bedrock of unknown type or age (Rubble of metasiltstone and chert, KH002; KH004; unit btu, OP002; MM002; Unmapped bedrock, BV002) 5 99 99 bu Areas not to be filled that lie within coverage, typically not mapped 18 100 100 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, 0 101 101 g Ice fields or glaciers (unit Qg, MG002) 681 102 102 Water (streams, lakes, ocean) 18 104 104 Qav Avalanche deposits 18 105 105 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 18 106 106 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) 18 107 107 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)] 18 108 108 Qls Landslide deposits (Ql, TL002; FB002; LH002; NB002; TC002; units Qrs, Qls, TN002; KH003; unit ls, NL003; unit Qcl, MG002) 18 110 110 Qt Terrace deposits (OP002; Qt, KT002; CA002; CY002; TC002; BR002; units Qbg, Qtr, TN002; units Qbg, Qtr, KH003; unit Qhs, NL003; unit Qap; BV002) 18 111 111 Qac Abandoned channel deposits (units Qfy, Qfo, MZ002; unit Qf, KT002; MD002; unit Qab, LG002; FB002; BD002; unit Qfo, NL003; unit Qc, GU002) 18 112 112 Ql Lacustrine deposits (KH004; GU002; Qfl, MH002; NB002; unit Qgl, NB002; unit Qlc, KH002; units Qls; Qfl, TC002) 18 113 113 Qsw Swamp deposits (FB002; unit Qsp, BD002; unit Qrs, RM002; unit Qs, TC002) 18 115 115 Qb Beach deposits (units Qyb, Qob, BL002; KW002; unit Qb, TC002; AP) 18 116 116 Qes Estuarine deposits (Qes, CB003; CG004; DI002; DI005; Qe, HP002; MA002; Qf, NR002; es, MK003; Ql, CV003?; es, CG003) 18 117 117 Qmt Marine terrace deposits (Qmt, CB003; CG004; PM002; UG003; UG004; Qtg, AD002; mt, CG003; MK003) 18 120 120 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) 18 121 121 Qfl Loess, Fairbanks loess (unit Qf, FB002; unit Ql, BD002; BR002; unit Ql, TN002; BV002; CI002; KH003; unit Qsw, RM002; unit Qfl, CY002) 18 122 122 Qsu Frozen silt, undifferentiated (FB002; unit Qs and Qsu, CI002; unit Qs, KH002; KH004; RM002; unit Qsp, MG002) 24 125 125 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) 24 126 126 Qsg Superglacial drift (Qsm, BG002; CV003; MM002; Qsg, CG004; sg, CG003) 24 127 127 Qrg Rock glacier deposits (Qr, TL002; LH002; unit Qrg, NB002; MG002; unit Qr, TC002) 24 128 128 Qsf Solifluction deposits (KH002; Qsm, BV002; Riehle and Detterman, 1993). 24 129 129 Qek Esker deposits 24 130 130 Qnd Drift, neoglacial (unit Qa, TL002; Qam MH002; Qt4, TN002; KH003; unit Qrm, MM002; unit Qag, NB002; unit Qg, TY005) 24 131 131 Qao Outwash deposits, Neoglaciation 24 135 135 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, 24 136 136 Qwr Riley Creek glaciation, late Wisconsin (unit Qrm, FB002; unit Qt3?, TN002; KH003; unit Qg3, SM002) 24 137 137 Qw2 Till (unit Qt2, TN002; KH003; unit Qg2, SM002) 24 138 138 Qw1 Till (unit Qt1, TN002; KH003; unit Qg1, SM002) 24 140 140 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) 24 160 160 Qrd Rock-defended terraces (unit Qb, TN002; KH003) 24 161 161 Qat Altiplanation terraces (TN002; KH002; KH003) 24 190 190 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] 24 191 139 Qblk Kvichak Stade (oldest advance), Brooks Lake Glaciation (Qblk, PM002) 24 195 195 Qow Older Wisconsin age outwash (Qho, FB002, Odo, BD002; unit Qof, MG002) [Overprint pattern 13] 24 200 200 Qmi Illinoian glaciations (pre-Eklutna glaciation, TL002; unit Qdlm, BD002; unit Qdtplm, MG002; Qdm, TC002) [Overprint pattern 14] 24 210 210 Qoo Outwash older than Wisconsin-age (unit Qdo, FB002; Qdlo, BD002; Qof, TC002) [Overprint pattern 14] 24 220 220 Tmp Pliocene(?) glaciations (unit Qbm, FB002; unit Tg, NB002; unit QTg, MG002; Qom, TC002) [Overprint pattern 15] 18 280 280 QTs Surficial deposits, undivided (ID002; BR002) 18 285 285 QTg High-level gravel (TN002; KH003; Jones Creek gravel deposits MD002; unit QTg, LG002BV002; Tc, TC002) 18 295 295 Qpm Placer deposits (ID002; LG002; FB002) 12 300 300 Qv Volcanic rocks, undivided (TY002; TY005; IL002; LC002; units Qya, Qvt, UL002; units Qnf, Qcc, Qcs, GU002; unit Qb, BH002; unit Qal, IL002) 12 111 301 Qw Wrangell Lava, younger part (NB002; units Qdf, Qsf, GU002) 12 305 305 Hv Holocene volcanic rocks (TY005, unit Qp, TC002) 12 310 310 Qpd Pyroclastic (Ash and debris flow) deposits (TY005; unit Qap, IL002) 12 311 311 Qafd Ash-flow and ash-fall deposits 12 312 312 Qdf Debris-flow deposits (TY005; unit Qsdf, GU002) 12 313 313 Qmf Mudflow deposits (unit Qar, IL002) 12 314 314 Qva Volcanic avalanche deposits (unit Qda, GU002) 12 315 Qmsv Mineral spring and mud volcano deposits (unit Qms, GU002) 12 316 Qshc Hyaloclastite or aquagene tuff (unit Qsh, GU002) 12 320 320 Qcs Cinder and spatter cones (FB002; unit Qwr, NB002; unit Qbc, GU002) 12 322 322 Qed Explosion debris 12 350 350 QTb Basalt (KT002; RM002; UL002; CA002; BT002; TC002; BR002) 78 400 400 Qi Intrusive rocks, undivided (units Qdc, Qsi, GU002) 78 401 401 Qvd Dacitic to rhyolitic domes (units Qdd, Qdr, Qsr, Qni, Qcr, GU002; unit Hvcp, TY005) 78 402 402 Qanp Andesite plug domes 78 403 Qds Radial dike swarm and plug (unit Qcd, GU002) 410 450 450 QTv Quaternary and/or Tertiary volcanic rocks, undifferentiated (unit Tv, TY002; TY005; unit QTu, GU002; unit QTv, IL002) 410 451 451 QTa Andesitic lava 410 455 455 QTw Wrangell Lava (VA002; MC002; NB002; unit Qwf, GU002) 410 460 QTi Intrusive rocks (GU002; VA002) 78 465 465 QTva Wrangell Lava, rhyodacite and rhyolite domes and associated pyroclastic rocks (NB002; unit Qwd, GU002) 78 470 470 QTva Quaternary and/or Tertiary pyroclastic flow deposits 37 470 490 QTc Quaternary or Tertiary metamorphic rocks, particularly in Mt. Dana area on Port Moller map 88 500 500 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) 81 530 530 Tmr Milky River Formation (includes unit Tvs, McLean and others (1978) 85 540 540 Tsf Sterling Formation (TL002; TKs, TY002) [Overprint pattern 13] 85 108 545 Tkb Beluga Formation (TY002; TY005) [Overprint pattern 14] 85 550 550 Ttg Tugidak Formation, (also unit Tp, Pliocene marine sedimentary rocks [Moore, OFR 271] (Moore, 1969) 85 560 560 Tk Kenai Group, undivided (TL002; TY004) 37 570 570 Tn Nenana Gravel, Pliocene and Miocene (HE002; MH002; FB002; BD002; KH004; MM002) 37 571 571 Tn? Nenana Gravel? (MM002) 84 572 572 Tta Tachilni Formation 75 573 573 Tbl Bear Lake Formation 75 580 580 Tnc Narrow Cape Formation, same as Tms [Miocene marine sedimentary rocks (Moore, OFR 271)?] (Moore, 1969) 101 590 590 Tun Unalaska Formation (Drewes and others, 1961) 85 600 600 Tty Tyonek Formation (AN002; unit Tkt, TY002; TY005) [Overprint pattern 15] 85 601 600 Ttyc Tyonek Formation, Conglomerate member (TL002) [Overprint pattern 15] 85 602 600 Ttys Tyonek Formation, Sandstone member (TL002) [Overprint pattern 15] 85 163 600 Tty? Tyonek Formation (unit Tkt?, TY005) [Overprint pattern 15] 306 610 610 Tu Unga Formation (Conglomerate) 35 611 611 Tbe Belkofski Formation 85 630 Ttyh Tyonek Formation and Hemlock Conglomerate, undivided (TY002) [Overprint pattern 15] 30 645 640 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) 101 650 650 Th Hemlock Conglomerate 35 660 660 Tsk Sitkinak Formation, same as To (Oligocene continental sedimentary rocks) on OFR 271? (Moore, 1969) 35 670 670 Tts Tsadaka Formation (AN002; Tt, TY002) 139 740 740 Tsi Sitkalidak Formation, same as Teo [Eo-Oligocene marine sedimentary rocks (Moore, OFR 271)?] (Moore, 1969) [Overprint pattern 13] 37 790 790 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) 37 795 795 Tvs Volcanic and sedimentary rocks, undivided, Oligocene and Eocene (LG002) [Overprint pattern 13] 139 800 800 Tst Stepovak Formation 132 850 850 Tcl Copper Lake Formation (Unit Tc on Mt. Katmai map, Riehle and others, 1987; unit Tcl, TY002; units Tclu, Tcls, Tcll, IL002) 35 107 855 Twf West Foreland Formation (TY002; TY005) [Overprint pattern 14] 139 860 860 Tt Tolstoi Formation 35 870 870 Tw Wishbone Formation (AN002; TY002) [Overprint pattern 15] 85 880 880 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] 136 890 890 Tar Arkose Ridge Formation (AN002; TY002; unit Kar, TK002) 91 900 900 Tch Chickaloon Formation (TK002; unit Tc, AN002; TY002) 30 910 910 Tjc Sedimentary rocks of Jarvis Creek coal field, undivided (unit Tsj, MH002) 30 911 910 Tjcu Sedimentary rocks of Jarvis Creek coal field, upper member (unit Tsju, MH002) 30 912 910 Tjcm Sedimentary rocks of Jarvis Creek coal field, middle member (unit Tsjm, MH002) 30 913 910 Tjcl Sedimentary rocks of Jarvis Creek coal field, lower member (unit Tsjl, MH002) 40 950 950 Tos Sedimentary rocks of the Orca Group, undivided (AN002; VA002) 40 951 951 Tovs Sedimentary and volcanic rocks of the Orca Group, undivided (unit Tos, AN002; VA002) 40 952 952 Toc Conglomerate of the Orca Group (AN002; VA002) 123 995 1780 Tgh Ghost Rocks, same as Tpe (Paleocene volcanic and marine sedimentary rocks [Moore, 1967, OFR 271]?) (Moore, 1969) 365 1000 1000 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) 413 200 1103 Tvab Andesite and basalt flows (unit Ta, NR002; Tm, HC002) 365 1001 1001 Trs Rhyolitic volcanic and sedimentary rocks (unit Tvs, TN002; unit Tv, TN003; LC002; unit Tr, RM002) [Overprint pattern 14] 365 1001 1001 Trp Rhyolite plug on I-1229 1002 1002 Tda Dacite 365 1003 1003 Ta Andesite; on map I-1685 unit Tau was subdivided for Alaska Peninsula map depending on location. (Unit Tvf, LC002) [Overprint pattern 14] 365 1004 1004 Tb Basalt (unit Tb, LG002; FB002; SM002; unit Tm, TC002) [Overprint pattern 13] 417 1005 1005 Tum Ultramafic rocks (Moore, OFR 271) On Kodiak 237 1010 1010 Thf Hypabyssal intrusive rocks of uncertain age (Mt. Katmai, Riehle and others, 1987; unit Ti, TY002; unit Tid, MG002) [Overprint pattern 13] 237 1011 1011 Thf 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; 345 1012 1012 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 76 1022 1022 Thd Hornblende dacite of Jumbo dome (HE002) 420 1050 1050 Tv Miocene volcanic rocks, includes unit Tva, Miocene volcanic rocks on Mt. Katmai map, Riehle and others, 1987 420 1051 1051 Tab Miocene and Pliocene andesite and basalt 420 1052 1052 Tba Miocene basaltic andesite (ID002) 420 1053 1053 Tdi Miocene and/or Pliocene hypabyssal dacite intrusions, includes unit Tdp, Dacite plugs on I-1229; rhyolite and dacite dikes and sills (GO002) 413 150 1070 Tvr Crystal and crystal-lithic ash-flow tuff (units Tv1, Tv2, Tv3, Tv4, Tv5, LH002; unit Tvt, IL002) 413 1081 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) 413 1081 1081 Tm Meshik Volcanics (Formation) 413 1082 1082 Tvb Basaltic lavas of the Meshik volcanic arc (on Mt. Katmai map, Riehle and others, 1987) 413 1083 1083 Tvm Andesitic and dacitic rocks of the Meshik volcanic arc (on Mt. Katmai map, Riehle and others, 1987) 365 1084 1084 Tap Andesite plug on I-1229 365 1085 1085 Tp Popof volcanic rocks, only in Shumagin Islands = Meshik 341 1110 1110 Tver Moderately altered rhyolite flows, Nukluk Volcanic Field (unit Tnr, BH002) 341 1111 1111 Tvnb Massive basalt and andesite, Nukluk Volcanic Field (unit Tnba, BH002) 341 1120 1120 Tvep Tuff and breccia, Eocene or Paleocene (unit Tt, UL002; units Tv, Tn, GO002; unit Tr, ST002) 416 1135 1135 Tov Orca Group, volcanic rocks, undivided, Paleocene and Eocene? (VA002) 416 1140 1140 Tcv Cantwell Formation, volcanic rocks subunit (HE002; unit Tv, MH002) 279 1200 1200 Tiu Tertiary intrusive rocks, undivided (unit Ti, on Mt. Katmai map, Riehle and others (1987); units Ti, Tg, RM002; unit Tp, TC002) 148 1205 1205 Tgd Granodiorite, undivided (on Mt. Katmai map, Riehle and others, 1987; unit Ti, IL002) 304 1206 1206 Tqd Quartz diorite, undivided (on Mt. Katmai map, Riehle and others, 1987; unit Ti15, LC002, also unit Ti14, LC002, considered altered 11206) 124 1207 1207 Tgb Gabbro and diorite, undivided (on Mt. Katmai map, Riehle and others, 1987); unit Tm, RM002; unit Tgb, TC002) 279 1210 1210 Tiv Granitic and volcanic rocks, undivided. Age range Oligocene to Paleocene (unit Tgrv, HE002) 124 1250 1250 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 268 1253 1253 Tgd Diorite, Unalaska map 140 1254 1254 Tgg Gabbro, Unalaska map 270 1270 1270 Togr Granitic rocks (units Twf, Tnep, LH002; unit Ti, MC002; unit Tsxr, TY003; TY005; unit Twg, MG002; Units Ti19, Ti18, Ti3, LC002) 270 1275 1270 Tgmb Granitic phase (Biotite granite) of Miners Bay pluton (unit Tmg, AN002) 1285 1285 Top Oligocene basalt plug 180 1290 Toegr Granitic rocks (units Tmp, Ttg, Tsf, Tsc, TKqc, Tgd, Tus, Tcpi, LH002) 180 1290 1290 Tegr Granitic rocks (unit Tg, SM002; units Tiu, LH002) 180 1295 1290 Tgr Tertiary granitic rocks -- McGonagall pluton? (no unit, MM002) 423 138 1292 Toem Granodiorite to tonalite (units Tmpg, Tjc, Tsr, Tt, Tmr, LH002; units Ti6, Ti16, LC002), Mafic phase, Miners Bay pluton (unit Tmm [1282], AN002) 177 1305 1300 Tegr 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) 177 1301 1301 Td Felsic intrusions, leucocratic dikes, sills and small stocks, south of Border Ranges fault (AN002) 177 1307 1307 Tgdp Quartz monzonite, monzonite breccia, and quartz porphyry (unit Tqm, MG002; MG003) 177 1310 1310 Tegr Tonalite (unit Tt, VA002) 273 1315 1315 Tod Oligocene and Eocene diorite = Td on I-1229 237 1320 1320 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 237 1331 1320 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 273 1350 1350 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 372 119 1380 Tgl Hornblende and pyroxene-hornblende gabbro (LH002; unit Tgb, MG002; unit Ti5, LC002) 311 1410 1410 Tgma Cottonwood Creek Complex, gniess and amphibolite (unit Tc, NB002) 749 1510 1510 TKcg Conglomerate, sandstone, and lignite (MD002; unit TKs, UL002; CY002) 749 1520 1520 TKcs Conglomerate and sandstone (unit TKc, NB002) 126 1600 1600 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) 126 1601 1601 TKd Dikes and subvolcanic rocks (unit TKd, OP002; SM002; ID002; LH002; unit TKi, TL002; unit TKsa, MD002; unit TKm, MG002) [Overprint symbol 15] 126 1602 1602 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] 126 1603 1603 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] 126 1604 1604 TKvd Volcanic rocks, dacite (unit TKv, TN002; TN003; unit TKvd, MG002; unit TKtd, BH002) [Overprint symbol 13] 126 1605 1605 TKvi Iditarod Volcanics (ID002; unit TKa, KH002; unit TKa, UL002; unit TKvm, MG002; units TKea, TKsa, BH002) [Overprint symbol 14] 136 127 1610 TKhp Baultoff Creek region older porphyry (unit TKp, NB002) 126 164 1615 TKv Felsic tuff (TY004; TY005) 126 1620 1620 TKd Pilotaxitic dacite-andesite plugs (ID002) [Overprint symbol 15] 126 1625 1625 TKvr Felsic volcanic rocks (unit TKvf, SM002) [Overprint symbol 13] 129 1632 1630 TKiv Mafic to intermediate volcano-plutonic complexes (unit TKc, OP002; MD002; unit TKv, SM002) 129 1633 1630 TKim Mafic to intermediate volcano-plutonic complexes, monzonite (unit TKcm, MD002) 241 1650 1650 TKi Intrusive rocks (RB002; NL002; TL002; TY003; TY005; unit TKg, SM002; units TKiu, Tgdn, LH002; unit gr, MM002) 244 1655 1655 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 362 1660 1660 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) 244 1665 1665 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] 667 1670 1670 TKgb Gabbro (units TKmg, TKtp, TKm, TKpg, LH002); Leucogabbro (unit TKlg, TK002; unit TKm, TY005; unit TKg, ST002) 644 1690 1690 TKl Lamprophyre, alkali gabbro, and alkali diorite (unit la, MH002) 736 1710 1710 TKc Cataclastite (AN002; unit TKm, VA002) 209 1720 1720 TKgg Gneissose granitic rocks (unit gg, MH002; unit TKgs, LH002); 973 4710 4710 MzPzgs Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks (SM002; unit KCgu, RM002) 375 154 4800 Mzi Intrusive rocks, quartz diorite and diorite (TY003) 420 4810 4870 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) 375 153 4880 Mzm Mafic rocks, diorite and gabbro (TY003) (Unit gone from compilation) 674 4890 4890 Mzum Ultramafic and associated rocks (unit um, MH002; unit GG, VA005 [new unit]) 674 4891 4891 Mzum Ultramafic and mafic igneous rocks along Broxson Gulch thrust (unit umm, MH002) 788 152 4905 JPzk Metasedimentary and metavolcanic rocks, (TY003; TY005) (Correlated with Kakhonak Complex) 788 150 4920 JPzk Metavolcanic and metasedimentary rocks, (TY003; TY005) (Correlated with Kakhonak Complex) 745 1800 1800 Ksu Cretaceous sedimentary rocks, undivided (unit Ks, TY004) [Rassigned to other units] 797 1805 1805 Knb Changed to NSA = 2021.Undivided marine and non-marine shale and siltstone (unit Knm, KT002 [see also 2115]) 728 303 1810 Kca Chert and argillite (unit Kc, RB002) [Not used, see 6080, 3850] 790 400 1815 Klsc Limestone conglomerate (unit Klc, CA002) 968 232 1820 Kcvg Calcareous volcanic graywacke and mudstone turbidite (unit Kcc, CA002) [Overprint pattern 13] 797 235 1821 Kcg Calcareous graywacke and mudstone (unit Kcg, CA002) [Overprint pattern 14] 790 231 1822 Kcc Calcareous graywacke and mudstone (unit Kcv, CA002) [Overprint pattern 15] 851 1905 1905 Ksh Shale and siltstone (OP002) [Overprint symbol 13] 851 1906 1906 Ksa Sandstone, Late Cretaceous (OP002) [Overprint symbol 14] 851 1907 1907 Kvss Volcaniclastic sandstone (OP002) [Overprint symbol 15] 749 920 1920 Kcs Cantwell Formation, sedimentary rocks subunit (HE002; MM002; unit Ts, TL002) 851 1940 1940 Kk Late Cretaceous undifferentiated clastic rocks (unit Ksc, MD002 [should this be NSA 1970?]; unit Ku, MC002; unit Ks, UL002) 848 1941 1941 Kss Non-marine sandstone, quartz conglomerate, shale, and siltstone (unit Ks, MZ002; NB002; RB004; unit Kr, TC002) [Overprint symbol 16] 851 1942 1942 Kk Limy volcaniclastic sandstone (unit Kls, OP002) 797 210 1943 Kshn Non-marine shale, siltstone, and sandstone (unit Ks, HP002; HC002; SC002; KW002) [Overprint symbol 16] 754 1912 1912 Kshf Shumagin Formation 736 1915 1955 Kkg Kaguyak Formation (TY002; unit Kk, IL002) 790 1916 1916 Ksmd Shumagin Formation, mudstone member 754 1917 1917 Kkd Kodiak Formation (Moore, OFR 271) = Kk on MF-1057 729 1913 1913 Kh Hoodoo Formation 755 1914 1960 Kc Chignik Formation 739 1911 1961 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) 851 1970 1970 Kk 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 940 1980 1980 Kms Minto unit, siltstone, mudstone, graywacke, quartzose sandstone, plant fragments, Late Cretaceous(?) (unit Km, LG002) 851 1971 1985 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] 848 1990 Kqc Quartz-pebble conglomerate, early Late Cretaceous (MZ002; BT002; HU002) [Overprint symbol 14] 800 2010 2010 Km Matanuska Formation, fossiliferous marine shale, late Early Cretaceous to Late Cretaceous (AN002; TK002; TY002; GU002) 848 2020 2020 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) 848 340 2030 Kcg Igneous pebble-cobble conglomerate (Albian and Late Cretaceous?, unit Kc, MZ002; HU002; RB004; unit Kic, BT002) [Overprint symbol 15] 745 2100 2100 Knl Early Cretaceous undifferentiated sedimentary rocks (unit Ksu, TK002; unit Kl, MC002) [Overprint symbol 13] 803 2101 2101 Ksse Marine sandstone and siltstone, Early Cretaceous (unit Ks, ID002; unit Km, KT002; unit Km, NL003) 983 2105 2105 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) 745 2110 2110 Kbc Berg Creek Formation (unit Kb, VA002) 752 2115 2115 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) 793 2131 2120 Kp Pedmar Formation, Albian (unit Kp, Riehle and others, 1987) 745 2125 2125 Ksm Quartz-carbonate sandstone and pebbly mudstone, Early Cretaceous, Valanginian-Aptian (unit Kqc, MD002; unit Kb, GO002) [Overprint symbol 13] 752 2126 Kba Biederman Argillite, Kandik Group, Valanginian (unit Kb, CY002) [Overprint pattern 13] 793 2120 2130 Kcct Cape Current terrane (MF-1057) 909 2135 Kkq Keenan Quartzite, Kandik Group, Valanginian (unit Kk, CY002; Kq, BR002) [Overprint pattern 15] 752 2140 Karg Argillite, Early Cretaceous(?) (CY002) [Overprint pattern 14] 838 2141 2150 Khe Herendeen Formation (= Khl, Herendeen Limestone on some maps; unit Kss, TY002; unit Klg, GO002) 838 2151 Kli Limestone, Early Cretaceous(?), primarily Inoceramus prisms (unit Kl, CY002) 803 211 2152 Kmm Marine mudstone and sandstone (unit Kgs, KT002; unit Kgm, KT002 [201]; unit Kcs, NL003 [303]; unit Kcs, KW002) 909 302 2170 Kuc Ungalik Conglomerate (unit Ku, RB002; NL002) [Not used] 520 2142 2175 Kst Staniukovich Formation (unit Ks, Riehle and others, 1987; unit KJs, I-1229) 983 2180 2180 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) 983 202 2181 Kvm Earliest Cretaceous volcanic conglomerate (KT002, shown as part of unit Kgs - 2152) 458 2190 2190 Kmk McHugh Complex, Uyak Complex, melange (unit Mzm, AN002; unit KJm, VA002; unit KJm, TY002) 458 2192 2192 Kmar Melange south of McKinley Fault (unit Kms, HE002) 172 2193 2193 TrSl Melange south of McKinley Fault, limestone blocks (unit (msl)Kms, HE002) 458 2195 2195 Kmar Melange north of McKinley Fault (unit Kmn, HE002; unit wm, MH002 [same as Kmy and Kmz in Healy quad?, subdivided also on map]) 172 2196 2196 TrSl Melange north of McKinley Fault, limestone blocks (unit (mnl)Kmn, HE002) 416 2197 2197 mlu Melange north of McKinley Fault, ultramafic rocks (unit (mno)Kmn, HE002) 124 2210 2210 Kve Hypabyssal rocks, dacite and rhyolite porphyry (MZ002; unit Ktr, BH002; unit Khi, HU002; unit Ki, KW002) 124 162 2230 Kve Cretaceous basalt, local pillow flows, probably early Cretaceous (unit TKb, TY004; TY005) {Kve} 124 2255 2255 Kvl Andesitic subvolcanic rocks (unit Kva, HE002) [Overprint symbol 14] 124 2256 2256 Kvl Basaltic subvolcanic rocks (unit Kvb, HE002) [Overprint symbol 14] 124 2260 2260 Kvl Kuskokwim Group, tuff and agglomerate (ID002; unit Kac, OP002) [Overprint symbol 14] 124 2261 2261 Kvl Kuskokwim Group, flows and tuff (ID002; RM002) [Overprint symbol 14] 124 2265 2265 Kvl Volcanic rocks, Kipchuk Volcanic Field (units Kvkr, Kvk1, Kvk2, Kvk3, Kvk4, Kvk5, Kvk6, BH002) [Overprint symbol 14] 124 2270 2270 Kvl 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] 124 2320 2320 Ktg Tuff, volcanic graywacke, and mudstone (MZ002; unit Kts, GO002; unit Ktg, HU002) [Overprint symbol 15] 124 2330 2330 Kve 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] 337 2340 2340 Kcve Chisana Formation, andesitic flows and volcaniclastic rocks (unit Kc, MC002; NB002) 251 2400 2400 Kg Dikes, granite to diorite (LG002) 251 2410 2410 Kg Granitic Rocks (unit Kg, RB004; BV002; KT003; KH003; CA002; unit Kgr, HE002; NL003; unit Kag, HU002; unit Ki15, LC002) 251 2411 2411 Kgt Tourmaline bearing granite (HE002) 251 137 2420 Kgd Granodiorite (unit Kg, GU002; units Ki14, KI13, Ki11, KI10, Ki7, Ki3, Ki2, Ki1, LC002; part unit Kg, MZ002) 672 2440 2440 Kmum Gabbro of Mount Moffit (unit gbm, MH002; unit Kd, BD002; unit Km?, TN002; unit Km, KH003) 672 2445 2445 Kmum Serpentinite, diabase, gabbro, and mafic volcaniclastic rocks (unit Km, KH003) 251 2450 2450 Kg Alaskite (LG002; unit Kp, BD002) [Overprint symbol 13] 251 2460 2460 Kg Granite (unit Kgr [part], HE002; RB005; units Kick, Kicc, BH002; unit Ki8, LC002) [Overprint symbol 13] 251 2465 2465 Kg Syenite (LG002) [Overprint symbol 13] 251 2470 2470 Kg 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] 251 2460 2475 Kg 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 251 2480 2480 Kg Granodiorite (unit Kg, MZ002; BD002; unit grmr, MH002; unit Kw, AN002; unit Kgd, LG002; TKg, TN003) 672 2510 2510 Kmum Serpentinized ultramafic rocks (AN002; NB002; unit Ksp, TN002; unit Ksp, BH002) 251 130 2520 Kg 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 251 134 2525 Kg Quartz-feldspar porphyry (unit Knp, NB002) [Overprint 14] 251 2525 2525 Kg Pink coarse-grained granite (unit Kis, BH002) [Overprint 14] 251 2530 2530 Kg Quartz monzonite (MZ002; unit Kg, TY002; unit Kinc, BH002) [Overprint 14] 251 131 2540 Kg 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 251 2570 2570 Ktt Leucotonalite and trondjemite (AN002; unit Knt, NB002) [Overprint 14] 470 2600 2600 Kmi Metamorphosed granitic rocks, largely diorite (unit ag, MH002; unit Kag, Haley Creek terrane, metaplutonic rocks VA002) 793 2631 2630 Mzsa Migmatite (unit mig, MH002), transitional between migmatitic schist (unit mgsh) and gneissose granitic rocks (unit gg), MH002) [Overprint symbol 14] 793 2630 2630 Mzsa Migmatitic schist and amphibolite (unit mgsh, MH002) [Overprint symbol 14] 335 2640 2640 Khg Hornfels and gniess (unit Kh, KH003) [As mapped is gneissose areas within hornfels, largely on the Tanana geologic map (TN002)] 679 2670 2670 Kmum Metagabbro, metadiabase, and minor amphibolite (unit mgb, MH002) 745 2700 2700 Kvs Metasedimentary rocks of the Valdez Group (AN002; VA002; unit KJv, MC002; TY002) 311 2705 2705 Kvv Valdez Group, metavolcanic rocks, undivided (unit Kvv, VA002; unit Kvt, AN002) 506 2720 2720 PPaskm Haley Creek terrane, (mid-Cretaceous?) schistose marble (unit M, VA002) [Overprint pattern 15] 909 2810 2810 KJs Argillite, chert, sandstone, and limestone (unit KJc, BH002; unit Mza, TC002) [Overprint symbol 14] 909 2812 2812 KJwc Wilber Creek and Wolverine quartzite units, undivided (TN003 modified, shown as southern TrPs) [Overprint symbol 13] 909 2815 2815 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) 909 2816 2816 KJw Quartzite of the Wolverine quartzite unit (TN003) [Overprint pattern 15] 909 2817 2817 KJw Sandstone and shale of the Wolverine quartzite unit (TN003) 793 2820 2820 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] 793 2821 2821 KJcg Conglomerate, sandstone, siltstone, shale, and volcanic rocks (HE002; unit Js, TK002) [Overprint symbol 15 793 135 2825 KJfm Metasedimentary rocks (unit Kw, TY003) 793 2850 2850 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 793 2851 2851 KJfk Flysch sequence (Early Cretaceous and Late Jurassic, unit KJfk, HE002) [Overprint symbol 13] 793 2852 2852 KJfn 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] 909 2860 2860 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] 909 2861 KJgu Glenn Shale, upper unit, Early Cretaceous to Middle Jurassic (CY002; KJs, BR002) [Overprint 16] 978 2870 2870 KJv Basalt and andesite flows, Whitefish Lake volcanic field, Nyac terrane (units TJwl, KJba, BH002; unit KJv, CA002) 978 550 2875 KJvt Tuffaceous subunit of unit MzPzat (Vrain") 978 490 2880 KJcv Chert and volcanic sequence (Late Cretaceous and(?) Jurassic, I-817, Sanak Islands) 978 2885 2885 KJrd Highly altered hypabyssal rhyolite and dacite (unit TJih, BH002) 420 2890 2890 JTrtv Pillow basalt (Early Cretaceous and Jurassic, unit KJb, TL002; unit KJb, BH002) [see 5450, 4215, all thought to be same unit] 248 2900 2900 KJg Granitic rocks and minor monzonite (grs1, grs2, grs3, grcl, MH002; Kgd, hbqd, hbqm, hbgd, GU002; TJis, BH002; KJi, LC002) 633 2920 2920 Jmu Gabbro and diorite (unit KJg, MG002) 633 2945 2945 Jmu Ultramafic rocks (Early Cretaceous or Jurassic, HE002) [Compare to unit Kum (AN002)] 793 2970 2970 KJfm Marine metasedimentary rocks, flysch, Early Cretaceous and Late Jurassic (unit KJs, MH002) [Overprint symbol 15] 851 3000 3000 Jsu Jurassic sedimentary rocks, marine, undivided (unit Js, MC002) 844 510 3010 Jn Naknek Formation (B-1969A; AN002; TK002; IL002) 844 505 3011 Jn? Naknek Formation? Use with overprint pattern 13] 899 511 3016 Jnc 867 512 3012 Jnn 822 513 3013 Jns 814 514 3014 Jni 803 515 3015 Jnk 517 3017 Jnn/Jncundivided 518 3018 Jni/Jnsundivided 971 520 3020 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)] 971 3030 3030 Jc Chinitna Formation (AN002; TY002; IL002) 841 3110 3110 Jkt Kotsina Conglomerate, Middle and/or Late Jurassic? (unit Jk, VA002; MC002) 836 3120 3120 Juc Unnamed marine sedimentary rocks, sandstone, siltstone, mudstone (unit Js, VA002; units Jvc, Jvs, BH002; unit Jk, GO002) 836 3130 3130 Jc Marine arkosic sandstone and argillite, Togiak terrane (unit Ja, BH002) 841 3140 3140 Jtxc Chinitna Formation and Tuxedni Group, undivided (TK002) 971 3180 3180 Jtx Tuxedni Group (Bajocian-Bathonian, unit Jt, AN002; TY002; IL002) 971 530 3190 Jk Kialagvik Formation [Kialagvik Fm. is similar to the lower upper part of the Tuxedni Group] 790 3260 3260 JTrp Phyllite and chert, possible Talkeetna stratigraphic equivalent (BH002) 633 3340 Jmu Lumped units 3345, 3405, 3490, 3491, 3495, 3540, 3545 -- NOT USED? 633 3345 3345 Jmu Ultramafic rocks (unit Ju, VA002; UL002) 279 3380 3380 Jtr Trondhjemite (AN002; TK002; unit Jt, UL002; GO002; unit Ji2, LC002; IL002) [Overprint pattern 13] 633 3390 3390 Jmu Alkalic gabbro (unit Jgb, HE002) 312 590 3400 Ji Alaska-Aleutian Range batholith, undifferentiated (B-1969B) 312 592 3401 Jgr Granite of Alaska-Aleutian Range batholith (B-1969B; unit Jg, TY002) 312 591 3402 Jgd Granodiorite of Alaska-Aleutian Range batholith (B-1969B; VA002; TK002; AN002; unit Jgd, TY002; unit Ji3, LC002; unit Jqm, IL002) 312 593 3403 Jqd Quartz diorite of Alaska-Aleutian Range batholith (B-1969B; AN002; TK002; unit Ji1, LC002; unit Jqd, IL002) 172 3404 3404 Jqt Quartz diorite and tonalite (AN002) 633 594 3405 Jmu Diorite and Gabbro of Alaska-Aleutian Range batholith (B-1969B; unit JTrd, NB002; units TJik, TJim, BH002; unit Jd, IL002) 790 3450 3450 Jvab Andesitic and basaltic flows, flow breccias and epiclastic marine rocks; younger than Talkeetna (unit Jab, BH002; unit Jvs, GO002) 362 146 3480 Jan Anorthosite (unit Mza, NB002) 633 3490 3490 Jmu Gabbronorite, Middle and Early Jurassic (unit Jg, AN002) 633 3491 3491 Jmu Sheared gabbronorite, Middle and Early Jurassic (unit Jgs, AN002) 633 3495 3495 Jmu Ultramafic and mafic rocks, Middle to Early Jurassic (unit Jum, AN002; unit Jm, TY002; unit Jsc, TN003; unit Jg, Jum, GO002; unit Jm, IL002) 468 400 3496 Jtu Cumulate ultramafic rocks (unit Jcu, NL003; unit pc, OP002) 468 401 3497 Jtu Harzburgite tectonite (unit Jht, NL003; unit ph, OP002) 468 301 3498 Jtu Ultramafic and mafic rocks, Middle to Early Jurassic (unit Juu, NL003; unit Ju, OP002) 790 540 3250 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 633 3540 3540 Jmu Hornblende gabbro and leucogabbro (layered) (unit Jgl [now Jtg), VA002; unit shgb, GU002) 633 3545 3545 Jmu Ultramafic rocks, Early Jurassic or older (unit Jum, VA002; unit shgb, GU002) 506 3600 3600 PPast Metamorphic and plutonic rocks, undifferentiated, Jurassic, (unit Jpmu, TK002) 963 572 3610 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) 506 3621 3621 PPast Migmatite border zone of granodiorite (TK002; unit Jmg, IL002) 772 3700 3700 Jps Pelitic schist, Jurassic (unit Jps, AN002; unit MzPzs, TY002) [Seems to be unique unit] 912 3820 3820 JTrmc McCarthy Formation, argillite and impure limestone (Early Jurassic-Late Triassic) (unit JTrm, MH002; MC002) 912 3821 3821 JTrmc McCarthy Formation, lower member. Limestone, shale, and chert (Early Jurassic(?)-Late Triassic (Norian)) (unit JTrm, VA002) 838 3830 3830 JTrsu Red and brown sedimentary rocks and basalt (Early Jurassic-Late Triassic) (unit JTrrs, HE002) 905 3850 3850 JTrct Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?) (unit Jta, TK002; unit JTrta, HE002; unit JTrsv, TL002) 464 401 3851 JTrta Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?), thought largely Triassic (unit JTrt, MD002; unit Kjvs, GO002) 912 601 4020 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] 838 4021 4021 Trlb Limestone and basalt sequence, Late Triassic, Norian (unit Trlb, HE002; MM002; TL002) [Overprint 15] 700 4025 4025 Trlst Limestone and fine-grained tuff (unit Trl, TY002) 977 4030 4030 JTrlm Chitistone and Nizina Limestone units, undivided (unit Trcn, HE002; MC002; unit Trl, VA002; unit Trl, MH002; NB002; unit Trm, MC002 [+ 20,000 hfls]) 977 4031 4031 JTrlm Limestone and marble (unit Trl, AN002; unit Jls, TK002) 841 4032 4032 Trsl Spiculite and sandy limestone, Late Triassic, Norian (unit Trs, MD002) 937 4033 4033 Trcs Calcareous sedimentary rocks, Late Triassic, middle(?) Norian and Late Karnian (HE002: MM002; unit Pzsl, TL002; unit Trls, MG002) 937 4034 Trgl Glenn Shale, lower unit, Late and Middle Triassic (CY002) 464 4035 4035 Trcg Chert and some greenstone (unit Trc, TY002; unit Trvs, GO002) 700 4040 4040 Trlsb Limestone of Briun Bay (unit Trb, TY002) Change to 4020 -- Brium Limestone member of Kamishak Fm. 937 4050 4050 Trcg Conglomerate and volcanic sandstone, Late Triassic, Norian (HE002) [Overprint pattern 13] 838 4060 4060 Trr Red beds, Late Triassic (HE002; unit JTrrs, MM002) 937 4080 4080 Trgl Calcareous phosphatic shale and limestone [probably correlative with lower part of Glenn Shale] (unit Trs, LG002) 841 4110 4110 Trcs Black shale and chert, Triassic (unit Trc, LG002) [Overprint pattern 13] 788 610 4150 Trss Shuyak Formation, sedimentary member on MF-1057 (Connelly, 1978), also Trvm, Volcanic and marine sedimentary rocks, in part (Moore, OFR 271) 0 4205 4205 Trvs Rhyolitic lava and breccia, tuff, chert, and shale, in Tanana quadrangle, unit eliminated on newer TN003 compilation (unit Trvs, KH003) 375 4210 4210 Trn Mafic igneous rocks, Triassic(?) (unit Trm, LG002; KH002; unit Trb, LH003) 420 4215 4215 JTrtv 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] 420 4215 3210 JTrtv Tatina River volcanics, Upper member, phosphatic shale and volcaniclastic sandstone (unit lJs, MG002) [see unit KJs, TL002, partial correlation] 375 4420 4420 Trn Nikolai Greenstone, Late and/or Middle Triassic (HE002; VA002; MH002; MC002; NB002; GU002) 375 4422 4422 Trn Nikolai Greenstone, Late and/or Middle Triassic, pillow basalt member (unit Trnp, MH002); Pillow basalt flows member, Late Triassic (MH002) 375 4423 4423 Trn? Basalt, diabase, and subordinate sedimentary rocks, Late Triassic, Karnian and Norian (unit Trbd, HE002; MM002) 375 625 4230 Trv Upper Triassic volcanic rocks on I-1685 905 4235 4235 JTrct Chulitna Sequence -- volcanic and sedimentary rocks, Late Triassic, Norian (unit Trvs, TL002) [Lumped with units 5010 and 3850] 772 640 4240 Trvm Volcanic and marine sedimentary rocks, in part (Moore, OFR 271) 772 640 4250 Trsv Shuyak Formation, volcanic member on MF-1057 (Connelly, 1978) 311 630 4310 Trqd Afognak pluton = Ja on MF-1057, U-Pb age indicates is probably Triassic 640 4320 4320 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) 640 4321 4321 Trgb Cumulate mafic and ultramafic rocks, Late Triassic(?) [Nikolai related] (unit cu, MH002) 999 3495 4340 Trc Carbonatite (TN004) 372 4410 4410 Trnm Schistose metasedimentary and metavolcanic rocks, Late Triassic (unit csv, MH002; unit JTrs, NB002) 573 145 4415 Trmg Biotite-hornblende syenite-monzonite gniess (unit Jtrg, NB002) 375 4421 4421 Trn Nikolai Greenstone - subaerial basalt flows member, Late Triassic (MH002) 375 650 4425 Trc Cottonwood Bay Greenstone (APMAP; unit MzPzg, LH002; unit Trm, TY002; unit Trc, IL002; unit Sc, LC002) 375 4430 4430 Trn Basaltic metavolcanic rocks, Late Triassic, (unit Trv, TK002) 372 4440 4440 Trnm Metavolcanic, metavolcaniclastic, and subordinate metasedimentary rocks, Late Triassic, late Norian, (unit Trvs, HE002) 372 4450 4450 Trnm Metabasalt and slate, Late Triassic (unit Trvs, TK002) 841 5740 5012 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 461 5020 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) 461 601 5021 TrMis Rampart Group, sedimentary rocks, Triassic to Mississippian (unit TrMs, OP002) 788 5026 5026 MzPzc Chert and argillite, Goodnews terrane (BH002) [Overprint pattern 16] 0 5030 5030 TrPzvs Volcanic and sedimentary rocks of Talkeetna superterrane, Triassic and Paleozoic (HE002) [Only in cross-sections] 740 5035 TrPgt Lower unit Glenn shale and Tahkandit Limestone, undivided (unit TrPgt, CY002; PCs, BR002) [Overprint pattern 15] 902 5040 5040 TrPas Flysch-like sedimentary rocks (HE002; MM002) 10 5045 5045 MzPzvs Turbiditic volcaniclastic sandstone and argillite, Goodnews terrane (unit MzPzv, BH002) 10 5050 5050 MzPzas Arkosic sandstone and slate, Goodnews terrane (unit MzPzs, BH002 10 5060 5060 TrDs Marine sandstone, shale, limestone and conglomerate (BH002) 458 5090 5090 MzPzm Melange and argillaceous melange, Tikchik and Goodnews terranes (units TrPzm, MzPza, BH002) 838 5110 5110 TrDv Chulitna Sequence -- volcanic and sedimentary rocks, Early Triassic to late Paleozoic (unit TrDv, HE002) 461 5111 5111 TrMica Chert, volcanic rocks, metasandstone, and limestone (unit TrMc, ID002) 461 5112 5112 TrMica Chert, argillite, and volcaniclastic rocks (unit TrPzc [TrMc], OP002) 468 5113 5113 JPztm Mafic and ultramafic rocks, undivided (Jurassic? and/or Paleozoic?) (unit Pzmi, RB005) 347 5120 5120 MzPzi Volcanic rocks, unknown age (unit vr, NL002; unit MzPzi, LH003) 468 5130 JTrtmu Rampart Group, igneous rocks, Triassic to Mississippian (unit TrMrv, LG002; no label TN003; unit MzPzc, CI002; CY002; Pzv, BR002) [Overprint 16] 464 5132 JMtru Undivided Tozitna (Rampart) in TN003 464 5133 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) 464 5140 5140 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) 468 5150 5150 Jaum Ultramafic rocks, Permian to Jurassic (MZ002; TN002; RB004; unit Jmu, TN003; unit JPu, BT002) 347 5160 5160 MzPzi Undivided intrusive rocks, Mesozoic or Paleozoic (TL002) 347 5170 5170 MzPzg Granodiorite of Rainbow Mountain Early Cretaceous and/or Miss. (unit grrm, MH002) 347 5175 5175 MzPzi Diorite (unit MzPzd, CI002) 347 5180 5180 MzPzi Gabbro and quartz diorite, Mesozoic and/or Paleozoic (unit MzPzg, TL002; unit MzPzm, TY002; unit MzPzi, MG002; MG003) 640 5190 5190 MzZum Undivided dunite and serpentinite, Mesozoic or Paleozoic (TL002; unit MzPzum, TY002; part of Jsc, TN003, Pzum, TN004) [TL002 = Chulitna?] 468 401 5191 Jium Hartzburgite tectonite of Mount Hurst (unit ph, OP002) 963 5200 5200 Jsch Metamorphic rocks, undivided (unit JPzm, AN002) 937 5201 5201 Trcs Fine- to medium-grained mylonitic metasedimentary rocks, calc-schist, marble, quartz-mica schist (unit as, MH002) 506 5202 5202 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] 506 168 5203 PPast Quartz-muscovite-feldspar schist of Metamorphic Complex of Gulkana River (unit qmfs, GU002) [Overprint pattern 348] 506 172 5204 PPast Dadina Schist (unit ds, GU002) [Overprint pattern 348] 793 5205 5205 Mzsa Schist and amphibolite, Late Cretaceous or older (unit sa, MH002) [Overprint pattern 14] 793 5206 5206 Mzpca Quartz-mica schist, calc-schist, and amphibolite, Late Jurassic or older (unit msh, MH002) [Overprint pattern 15] 937 5207 5207 Trcs 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} 81 5208 5208 TPza Raven Creek Hill unit, metasedimentary gneiss, mica schist, phyllite..., Mesozoic or Paleozoic (unit MzPzr, LG002; unit Pzsr?, TN002; KH003) 506 5209 5209 PPast 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] 793 5210 5210 Mzpca Argillite and metagraywacke, Late Jurassic or older (unit ma, MH002) [Overprint pattern 15] 580 5211 5211 MzPzaq Argillite and quartzite (CI002) Deleted unit in revision. 793 5215 5215 Mzpca Phyllite, Late Jurassic or older (unit mph, MH002) [see Pzp, #5540] [Overprint pattern 15] 909 5216 5216 KJvr? Phyllite, amphibolite, greenstone, and diorite, Mesozoic or Paleozoic (LG002) Lumped with Vrain [Overprint pattern 16] 977 5217 5217 MzPzp Chloritic phyllite, Goodnews terrane (BH002) 788 571 5220 JPzk Kakhonak Complex (Jurassic, Triassic and older?) (B-1969B; unit JPu, TY002; unit JPk, IL002; unit MzPzs, LH002, tentative) 788 5225 5225 MzPzmc Metachert and phyllitic quartzite, Goodnews terrane (unit MzPzm, BH002) 375 5240 5240 MzPzb Metabasalt and minor metachert (BH002; unit MzPzm, LC002, tentative) 573 5245 5245 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] 573 5250 5250 MzPmi Metamorphosed igneous rocks, post-Carboniferous (unit mi, NL002) 573 5280 5280 MzPzo Ophiolitic metamorphosed mafic rocks (unit MzPzb, UL002) 132 5285 5285 Pzrmi Metamorphosed mafic igneous rocks (unit Pzm, TN003) [Overprint pattern 13] 640 5290 5290 MzZum Serpentinite, Mesozoic and/or Paleozoic (unit MzPzu, TL002; TC002) 10 5310 5310 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) 980 301 5320 Pzld Massively bedded limestone, dolomite, and schist, Paleozoic (unit Pzl, CA002) 980 305 5321 Pzls Undivided limestone and schist, Paleozoic (unit Pzls, CA002) [Overprint pattern 13] 980 300 5322 Pzls2 Limestone and quartz-mica schist, Paleozoic (unit Pzs, CA002) [Overprint pattern 14] 573 605 5330 Pzlc Limestone and chert (unit Pzl, CI002) [Overprint pattern 708] 836 5340 5340 Pzrm Carbonates, early Paleozoic (OP002; unit Pzc, RB002) 458 126 5341 PPl Limestone?, Permian-Pennsylvanian? (unit PPl, LH003) 461 5350 Pzqa Quartzite and argillite, Late Paleozoic (CY002) [Overprint pattern 14] 461 5355 Pzca Chert and argillite, Late Paleozoic (CY002) [Overprint pattern 15] 458 5360 Pzsu Clastic rocks, undivided, Paleozoic(?) (CY002) [Overprint pattern 15] 458 5370 5370 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] 458 5375 JDm Mystic stratigraphic sequence, undivided (Triassic to Devonian) (unit Pzmu, LH004) 88 1900 5380 ls Limestone, unknown age, and lithologic character (various units, CI002) 139 1910 5381 ch Chert, unknown age, and lithologic character (various units, CI002) 420 5410 5410 Pzvs Volcanic and sedimentary rocks, middle or late Paleozoic (unit Pzv, TL002; unit Pzvs, KH003) 506 6120 6120 Pat Andesitic volcanic rocks (correlated with Tetelna volcanics), Early Permian? and Pennsylvanian (HE002) 347 5440 5440 MzPzi Diorite (unit Pzd,BD002; TC002) 420 5450 5450 JTrtv Pillow basalt, middle or late Paleozoic (unit Pzbs, TL002) [see 2890, 4215, all thought to be same unit] 177 5460 5460 Pagb Gabbro and leucogabbro, Late Paleozoic, Permian to Pennsylvanian (unit Pzg, VA002; unit Pgo, MC002; unit Pzg, NB002) [Overprint pattern 248] 241 5470 5470 Pzug Ultramafic and mafic rocks and greenstone (unit Pzum, NB002; unit Pzmu, CY002) 311 5475 5475 Pze Eclogite see Chatanika unit [5510], which includes eclogite in Livengood quad (CI002) 311 5510 5510 Pze Chatanika unit, allochthonous garnet-bearing qtz-bio-mus schist and quartzite, Paleozoic (LG002; unit PzpCms, CI002; unit Pzs, BD002) 836 5525 5525 Dm Marble, Paleozoic (unit Pzm, MZ002; unit Pzl, TN003; unit Dl, HU002; unit Pzm, BT002; BV002) 461 5542 5542 TrMtqp Calcareous siltstone and sandstone and phyllite (unit Pzc, KH003; unit TrMq, NL003; unit Pzrp {Ruby phyllite}, RB005) [Overprint pattern 16] Added PzpCq, MZ002 461 5545 5545 PMpc Phyllite, calcareous phyllite, and marble (unit uPzs, MG002) [Overprint pattern 16] 506 5550 5550 PPast 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] 841 5600 5600 PDms Greenish-gray siliceous slate, quartzite, chert, and greenstone, Perm-Miss. (unit Pzs, LG002; unit Pza, CY002; unit uPzc, MG002) 700 5605 5605 MDtm Cataclastic rocks, Totatlanika Schist (unit Pzc, BD002) [Overprint pattern 238] 841 5615 5615 PDms 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] 506 5620 5620 Pat Slana Spur Formation, marine calcareous and noncalcareous volcaniclastic rocks, Early Permian-Middle Penn. (unit PaPs, MH002) [Overprint pattern 14] 506 5621 5621 Pat Slana Spur Formation, calcareous volcaniclastic rocks, Early Permian-Middle Penn. (unit PaPsu, MH002) [Overprint pattern 14] 506 5625 5625 PPast Metamorphosed Skolai Group (unit PPsm, MC002) [Overprint pattern 348] 506 5631 5630 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.] 187 151 5635 Pzvc Volcanic rocks, volcanic sandstone, cherty argillite, quartzite, and tuff (NB002) 461 5640 5640 JPzsgs Greenstone (CI002) 506 5640 5641 PPast Greenstone (unit mcb, GU002; unit Jgs, TK002) [Overprint pattern 348] 699 5660 5660 Pzk Keevy Peak Formation, schist, quartzite, and phyllite, early Paleozoic (unit Pzk, HE002; MM002; unit Pzq, BD002; CI002; unit Pza, TC002) 699 5661 5661 Pzk? Keevy Peak Formation, schist, quartzite, and phyllite, early Paleozoic (unit Pzk?, HE002; unit PzpCg, TC002) 699 5662 Pzkcp Calcareous and phyllitic rocks (unit Pzm, CI002; BD002) [Overprint pattern 16] 468 6956 5665 Pzlsl Schist, phyllite, limestone, and greenstone (KH002) 699 5666 5666 Pzsc Spruce Creek sequence of Kantishna Hills from Bundtzen thesis (unit Pzsc, MM002); Muskox sequence of Newberry and others (1996), FB004 [Overprint pattern 13] 337 5670 5670 PzZyg Gneiss (Big Delta gneiss dome, unit Pzg, BD002) 506 171 5680 PPast Metamorphic complex of Gulkana River, amphibolite (unit am, GU002) 640 5695 5690 MzZum Metamorphosed ultramafic rocks (unit Pzu, BD002; unit Pzp, CI002; unit Pzmg, GO002) 506 5710 Psu Sedimentary rocks, undivided, Permian. Sandstone, siltstone, and quartzite (unit Pu, CY002) [Overprint pattern 13] 410 701 5730 Pls Unnamed Permian limestone on I-1685; from Hanson (1957) (unit Pl, GO002) 681 5735 Ptl Tahkandit Limestone, massive bioclastic limestone (unit Pt, CY002) [Overprint 13] 681 5736 5736 Psc Step Conglomerate, Permian, chert and quartzite clast pebble- and cobble conglomerate (unit Ps, CY002; Pq, BR002) [Overprint pattern 14] 841 5740 5740 Ps Argillite, sandstone, sandy limestone, and minor conglomerate (LG002; TN002; KH003; unit TrPs, TN003) [Overprint pattern 238] 461 121 5745 Pig Graywacke, conglomerate, and mudstone, Permian(?) (unit Pg, RB005) [Overprint pattern 14] 506 5750 5750 Ph Hasen Creek Formation (MC002) 410 5755 5755 Phls Limestone of the Hasen Creek Formation (unit Pl, MC002; unit Pel, NB002) 126 750 5810 Pv Permian(?) volcanic rocks (agglomerate) from Hanson (1957) (unit Pv, GO002) 461 5830 5830 JPzsgs Greenstone and chert (BD002) [Overprint pattern 348] 177 5860 5860 Pmi Shallow-level stocks, dikes, sills and small plutons, Early Permian? (unit Pi, MH002) 177 5870 5870 Pmgi Monzonitic-granitic complex (unit Pm, MC002; units PPf, PPp, PPg, GU002) 177 148 5880 PPad Diorite complex, diorite, granodiorite, and altered diabase and gabbronorite (units PPd, PPa, GU002 506 5920 5920 PPast Strelna Metamorphic complex, low- to medium-grade greenschist and amphibolite, Late Jurassic or older (units Ja, Psm, VA002) [Overprint pattern 348] 902 121 5940 Pmg Mankomen Group, undivided (unit Pm, NB002) [equivalent stratigraphically to Skolai Group] 506 5950 5950 Pe Eagle Creek Formation, Early Permian, marine argillite and limestone, lower greenschist facies (MH002; NB002) [equivalent to Hasen Creek Fm.] [Overprint pattern 13] 506 5620 5955 PPaskm 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, 461 5960 5960 JPzsgs Quartzite, phyllite, micaceous quartzite, marble, inferred Permian age (BD002) 468 5980 JPsu Serpentinized ultramafic (unit Pu, BD002; unit Pzp, CI002) 458 6010 6010 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 464 6020 PaDcb Calico Bluff and Ford Creek Formations, undivided (unit PaDu, CY002) [Overprint pattern 15] 461 6080 6080 TrMica Chert and limestone, chiefly chert, Penn and Miss (unit PaMc, MD002) 177 6110 6110 PPagi Granitic plutons south of Denali Fault (MH002) 241 6190 6190 Paum Ultramafic rocks (unit Pu, MC002) 506 6120 6220 Pat Tetelna Volcanics, volcanic flows, etc., lower greenschist facies (MH002; units Pzv, PPt, NB002; unit Pt, GU002) [Overprint pattern 14] 704 6320 6320 MDl Fossiliferous limestone, Miss. (unit PaMcl, MD002) 458 6335 PMl Younger limestones of Mystic stratigraphic sequence (Mississippian) (LH004) [Overprint pattern 348] 704 6380 6380 MDl Limestone, Mississippian to Devonian (unit MDl, OP002; CY002; Dl, BR002; unit MDm, BH002) 461 122 6390 TrMica Chert and argillite (Mississippian and Devonian (unit MDc, RB003; RB005; unit Kca, RB002, tentatively) 461 6391 MDfl Ford Lake Shale, laminated siliceous shale and chert (unit MDf, CY002) [Overprint pattern 13] 836 6412 6412 MDv Massive and pillowed basalt and other volcanic rocks (BH002) [Overprint pattern 348] 700 6510 6510 MDt Totatlanika Schist, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian, (HE002; MM002; FB002; unit Pzsg, BD002; very tentatively unit Pzu, TC002) 700 6511 6511 MDt? Totatlanika Schist?, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian, (HE002; unit PzpCgr, CI002) 184 6521 6521 MDyao Augen gneiss and schist, Mississipian or Devonian intrusion age (unit lga, MH002; unit PzpCa, BD002; unit Da, CI002) [overprint pattern 16] 184 6522 6522 MDrao Augen gneiss and schist, Mississipian or Devonian intrusion age (unit Dao, TN003) [overprint pattern 16] 516 6530 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] 573 7210 6902 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 704 117 6905 Dm Ruby marble (unit Pzm, RB005) [Dubious age call?, reported in source as Paleozoic?] 573 6910 6910 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] 458 6911 Dsc Shale and chert of Mystic stratigraphic sequence (Devonian) (unit Dsc, LH004) [Overprint pattern 14] 573 6912 Dmo McCann Hill chert and Olgilvie Formation, undivided (unit Dmo, CY002) [Overprint pattern 14] 573 6913 DOmr McCann Hill chert and Road River Formation, undivided (unit Dmo, CY002) [Overprint pattern 13] 573 6920 6920 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) 847 6921 6921 Dq? Calcareous clastic rocks (unit Pzc, TN002); also Devonian sandstone and shale (unit Dss, BV002) 847 6922 6922 Dq2? Quartz wacke (unit Pzw, TN002; KH003; unit Zw, TN003) 573 6923 6923 Dnrc Conglomerate, Nation River Formation (unit Dnrc, CY002) [Overprint pattern 15] 201 6930 6930 DSl Limestone, Late Devonian (LG002) 458 6931 6931 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] 573 6940 6940 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) 836 6944 DSl Limestone (Late Devonian to mid-Silurian) (unit Dls, KH002, unit Dl, KH004; units Dlr, Dld, Ml, TN003; unit Dl, CI002; unit Pzl, BV002) 836 6945 6945 Ds Schwatka unit -- Limestone, Middle and Early Dev. (unit Dsl, LG002; CI003; units Do, Dwl, CY002) 836 6952 6952 DSca Barren Ridge limestone, calcarenite, calcareous siltstone, and limestone (unit DSl, MG002; MG003; LH004) [Overprint pattern 14] 602 6955 6955 DSlc Lost Creek unit, lime mudstone and wackestone, Devonian and Silurian (unit DSl, LG002; unit Pzmr, TN003; Dl, CY002; Sl, BR002) 868 6956 6956 DSls? Limestone, dolomite, greenstone, and chert (unit Pzlc, TN002; unit Pzlc, KH003) 868 128 6957 DSls ? LH003 836 6960 6960 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] 836 6965 6965 DSt Tolovana Limestone, Middle Devonian to Early(?) Silurian, (LG002; FB002; KH002; KH004) 89 6966 6966 DSt? Limestone, greenstone, and schist (unit Pzl, TN002; KH003; unit DSl, CI002) 573 6990 DCru Road River Formation, Hillard Limestone and other units, undivided (unit DCu, CY002; DCl, BR002) 678 7010 Dsv Schwatka unit, mafic volcanic rocks, Middle and Early Devonian (LG002; CI003) [Overprint pattern 348] 678 7015 Dwv Woodchopper Volcanics, amygdaloidal basalt, pillow basalt, ..., equivalent to Schwatka unit? (unit Dwv, CY002) [Overprint pattern 348] 706 156 7080 Ddg Diorite-gabbro (unit MzPzi, NB002) 201 7220 7220 Dkm Kaskawulsh Group of Kindle, mainly marble (unit Pzk, MC002) 828 152 7230 Dpmc Phyllite and metaconglomerate (unit Dp, NB002) 509 7240 7240 Dyv Fine-grained schistose volcanic rocks and phyllite, Devonian extrusion age, (unit hgv, MH002) 509 7242 7242 Dy Yanert Fork sequence, thick sequence of marine metasedimentary and metavolcanic rocks, Late Devonian (unit Dy, HE002) 184 7250 7250 MDyao Medium-grained granitic gneiss, Devonian intrusion age (unit mg, MH002) 699 7290 7290 Pzsc Undifferentiated metasedimentary rocks, Late Devonian (MM002, equivalent to units DMf, Dmb, and Dms of HE002) [Overprint pattern 13] 699 7291 7291 Pzsc? Undifferentiated metasedimentary rocks, Late Devonian (MM002, equivalent to units DMf, Dmb, and Dms of HE002) [Overprint pattern 13] 699 7300 7300 Pzsc Metasedimentary rocks, Late Devonian (HE002; NB002) [Overprint pattern 13] 699 7320 7320 Pzsc Metabasalt and subordinate metasedimentary rocks, Late Devonian (unit Dmb, HE002; unit jcv, MH002; unit Dg, NB002) [Overprint pattern 13] 678 7325 7325 Dmgs Serpentinite, basalt, chert and gabbro, Late Devonian (unit Dsb, HE002; MM002) 670 7330 7330 Dmg Metagabbro, Late Devonian(?) (HE002) 828 7400 7400 DPzmp Pelitic, calcareous, and quartz-feldspar metasedimentary rocks, Devonian or older, (unit Pzs, NB002) 509 7402 7402 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 836 700 6615 DSmdl Thin-bedded limestone (unit Sl, TL002) 836 6620 6620 Spf Paradise Fork Formation and correlative units (unit Sls, MD002; unit Ssh, MG003; Sls, TA007 [Overprint pattern 13] 740 129 6630 Sa Argillite (LH003) Gone 440 130 6640 Ss Micaceous calc-sandstone (LH003) Gone 7 6660 6660 Stc Terra Cotta Mountains sandstone, sandstone and graptolitic shale (units uSsl, mSl, mSvs, mSs, MG002; unit mSs, MG003; unit mSm, LH004) [Overprint pattern 238] 788 6680 6680 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) 788 700 6681 SZa? Dolomite and argillite (unit DSd, CI002) 836 7520 7520 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] 836 7525 OCjr Jones Ridge Limestone, massive oolitic, typically silicified limestone (unit OCjr, CY002; COl, BR002) {overprint pattern 13] 836 7580 7580 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 788 7610 7610 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, 788 7710 7710 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 616 7711 7711 Oldl Limestone marker bed within Livengood Dome Chert (unit Pzll, TN003) 306 7990 CZtu Tindir Group, upper part, Early Cambrian and Late Proterzoic argillite, quartzite, dolomite, dolo-arenite... (unit CZtu, CY002; pCp, BR002) [Overprint pattern 13] 7 8000 8000 CZwl Wickersham unit -- Limestone, Early Cambrian and Late Proterozoic (unit CZwl, LG002) 640 8250 8250 MzZum Ultramafic and mafic rocks and greenstone, Cambrian and/or preCambrian (unit CZum, LG002; unit Pzug, CI002; pCi, BR002) 306 8400 8300 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) 301 8410 8310 CZwa Wickersham unit -- Maroon and green argillite, Early Cambrian and Late Proterozoic (unit CZwa, LG002; unit ng, FB002; unit Cal, TN002) 836 8340 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] 836 632 8350 CZds Oolitic limestone, Khuchaynik Dolomite of Babcock and others (unit XCl, MG003) [Overprint pattern 238] 306 8310 8410 Zwg Grit, Late Proterozoic, bimodal quartzite, gray and olive-gray greenschist facies argillite (LG002, unit PzpCgq, CI002; unit Cqs, KH002; unit Pzsq, KH003) 932 8330 8430 ls Various limestone bodies scattered through PzpC units in Circle quadrangle (CI002) [Recode northern units to 8000] 640 8450 8450 MzZum Mafic igneous rocks, Paleozoic and/or Late Proterozoic (unit PzZm, LG002; unit PzpCm, NL003) 133 106 8600 YZnm Nixon Fork metamorphic basement, undivided (unit mcb, RB002; unit PzpCm, RB003) [Overprint pattern 995] 132 8601 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] 132 8602 PzZlg Metamorphic complex, crystalline limestone and greenstone, older unit, Paleozoic (Ord-Dev) or preCambrian (units mca(?), mc/mcl, RB002; unit Pzc, BV002) 133 8610 8610 YZnc Calc-schist and impure marble, early Paleozoic or preCambrian (unit PzpCc, MD002, very tentatively unit pCl, GO002) [Overprint pattern 708] 836 8615 8615 Pzydm Dolomite and marble (unit PzpCd, CI002) [Overprint pattern 13] 836 8620 8620 Pzrm Metamorphic complex, crystalline limestone, Paleozoic (Ord-Dev) or preCambrian (unit mcl, RB002; NL002) [Overprint pattern 13] 132 8625 8625 PzZrqs 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) 136 8630 8630 PzZysa Pelitic schist, early Paleozoic or preCambrian (unit PzpCs, CI002; unit PzpCm, CY002; units ms, lgs, MH002) 15 1310 8632 PzZpg Sillimanite gneiss subunit, pelitic schist (unit PzpCs, CI002) 132 8633 8633 PzZaqs?Pelitic schist, early Paleozoic or preCambrian (unit Pzsv, TL002) [Overprint pattern 996] 133 8640 8640 YZns Pelitic schist of Nixon Fork basement (unit PzpCp, MD002) [Overprint pattern 15] 120 8650 8650 PzZrqs Metamorphic complex, schist and quartzite with some crystalline limestone, younger unit, Paleozoic (Ord-Dev) or preCambrian (unit PzpCs, NL003; unit PzpCc, NL003) 221 8660 8660 PzZms Mafic schist (unit PzpCm, CI002) 133 8700 8700 YZnv Felsic metavolcanic rocks of Nixon Fork baseement (unit PzpCv, MD002) [Overprint 16] 136 8801 8801 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] 136 8802 8802 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] 306 9020 Ytl Tindir Group, lower part, stromatolitic limestone (unit Ytl, CY002; EA002) [Overprint pattern 14] 132 9320 9320 PzZyqs Greenschist facies muscovite chlorite schist, quartzite and phyllite [Fairbanks schist unit - undivided] (LG002; unit PzpCsq, TN002) 132 9321 9321 PzZyqs 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) 132 8630 9322 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] 132 1610 9323 PzZyqs Quartzite subunit of quartzite and quartzitic schist (unit PzpCq, CI002) 132 9324 PzZyqs Calc-silicate and marble subunit of quartzite and quartzitic schist (unit PzpCq, CI002) 132 9325 PzZrqs 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] 132 9326 PzZyqs Greenschist subunit of quartzite and quartzitic schist (unit PzpCq, CI002) [Not found yet on map.] 132 9327 9327 PzZyqs Quartzitic and pelitic schist of the Yukon-Tanana crystalline complex (unit bc [northern part], FB002; units PzpCsq, PzpCs, BD002; unit PzpCq, CI002) 187 9400 9400 Xi Idono Complex, Early Proterozoic, metaplutonic rocks, amphibolite, and minor metasedimentary rocks (ID002) 283 9420 9420 Xo Amphibolite facies orthogniess and minor amphibolite and pelitic schist. Kanektok or Kilbuck terrane (BH002, unit pCk, GO002) 12 1000010000 Altered zones 12 2000020000 Hornfelsed zones. 12 330 Qb Basalt of Togiak River Valley, basalt flows (GO002; KW002) 18 112 282 QTmb Semiconsolidated marine beach deposits (GO002) 458 5005 MzPzvs Thick, widespread, marine unit consisting of volcanic and sedimentary rocks ranging in age from Early (?) Ordovician to Early Cretaceous. (GO002) 372 161 1370 Tim Dark-colored dikes and sills consisting of diabase, basalt, dioritic and gabbroic mafic intrusive rocks (GO002) 279 154 1208 Tsy Syenite of Mount Fairplay (unit Ts, TC002) 129 1635 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) 372 180 1640 TKum Mafic and ultramafic intrusive rocks including pluglike body of augite andesite porphyry and a small dikelike body of augite peridotite (unit TKi, HU002) 312 165 3550 JTrg Granodiorite of Taylor Mountain batholith and related(?) rocks (units JTrg, Mzg, TC002) 312 170 3555 Jsy Hornblende syenite porphyry (unit MZs, TC002) 848 104 2021 Kme Sandstone, shale, and conglomerate deltaic deposits (unit Knm (west) KT003; unit Kn, KT003; unit Ksu, NL003; unit Ks, UL002; NR002) 461 5131 5131 TrMtsu Mafic and sedimentary rocks (TN002) 251 126 2415 Kgc Contaminated granitic rocks; Dark, fine- to coarse-grained contaminated granitic rocks with abundant mafic schlieren (unit Kgc, BV002) 468 132 5230 JPe Banded dark-green, gray, and red eclogite and banded amphibolite.(unit JPe, BV002) 570 6934 Dg Dark-greenish-gray fine-grained impure graywacke (unit Dg, BV002; unit Pzg, BT002) [Overprint pattern 16] 836 150 5530 Pzcs Schistose calcareous siltstone, limestone, and greenish tuffaceous rocks.[Overprint pattern 708] 844 7350 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) 341 1121 1121 Tvei Known or strongly suspected fine-grained hypabyssal intrusive rocks of unddifferentiated unit Tfu (unit Tfi, HC002) [Overprint pattern 13] 672 172 2430 Kqd Quartz diorite (units Ki12, Ki6, Ki4, LC002) 470 169 2590 Kgdc Cataclastic or mylonitic granodiorite (unit Ki9, LC002) and quartz diorite (unit Ki5, LC002) 793 2980 2980 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 76 1025 1025 Tpb Intricate Basalt, olivine-augite basalt (unit Tib, IL002) 81 1030 1030 Tpgu Gibraltar Lake Tuff -- Upper member (unit Tglu, IL002) Overprint 13 81 1031 1031 Tpgl Gibraltar Lake Tuff -- Lower member (unit Tglu, IL002) Overprint 14 270 1275 1275 Toqd Quartz diorite (Unit Tqd, IL002) Overprint 13 251 700 2545 Ksy Hornblende and pyroxene monzonite and syenite. Minor biotite quartz monzonite (Kg, CA002; Ks2, SH002) [Overprint 14]. 980 5520 5520 Pzpq Chiefly dark phyllite and fine-grained quartz-mica schist (SH002; SE002) [Overprint 15] 124 2335 2335 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] 633 3350 3350 Jsp Serpentinite 251 2535 2535 Kns Chiefly leucocratic, medium-grained nephelene syenite and related mafic alkaline rocks (SE002; SH002) [Overprint 348] 251 2515 2515 Kg Chiefly leucocratic, medium-grained, gniessic, muscovite-biotite albite granite (SH002) [Overprint 14] 573 7450 7450 DOtu Metasedimentary and metavolcanic rocks of Tukpahlearik Creek, undivided (SE003) [Overprint 16] 251 2401 Kd Basaltic andesite dikes (Kd, SV002) 133 8710 8710 Ynqd Meta-quartz diorite (pCm, RB007) 5260 5260 MzPzq Seward terrane? Quartzite, carbonate rocks, schist, and amphibolite (NR002) [Overprint pattern 14] 133 9045 9045 Zgr Granitic rocks, possibly younger than preCambrian (pCg, BR002) [Overprint pattern 13] 136 710 8803 PzZrpg Quartzite of the Ruby crystalline complex, Paleozoic or preCambrian (unit PzpCq, MZ002) [Overprint 16] 337 2340 2340 Kft Shoshonitic flows and tuffs (unit Kft, UL002) 790 1816 1816 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] 797 1823 1823 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] 301 2106 2106 Kvcc Conglomeratic facies, Volcanic conglomerate and breccia [Overprint symbol 238] 301 2107 2107 Kvci Intricately intruded areas of Volcanic graywacke and mudstone, late Early Cretaceous (Albian) [Overprint symbol 348] 800 2023 2023 Ksi Intricately intruded areas of sandstone, shale, and conglomerate deltaic deposits (unit Ks, UL002; KT002; NL003) [Overprint symbol 348] 848 2024 Kccf Undifferentiated sedimentary rocks -- conglomerate facies (NL004) [Overprint symbol 238] 836 149 7530 OChl Hillard Limestone (Unit OCh, EA002) [Overprint pattern 14] 616 150 7970 Ca Adams Argillite (Unit Ca, EA002) [Overprint pattern 13] 616 155 7971 pCq Quartzite and argillite (Unit pCq, EA0020 [Overprint pattern 15] 616 151 7980 Cf Funnel Creek Limestone (Unit Cf, EA002) [Overprint pattern 16] 306 153 9021 Yts Tindir Group, dolomitic sandstone and shale member (Unit Yts, EA002) [Overprint pattern 15] 640 154 9040 Ytb Tindir Group, basalt and red beds member (Unit Ytb, EA002) 640 156 9041 Ytb? Greenstone (Unit pCg, EA002) 24 106 290 QTf Faneto Formation (AT002) 410 120 462 QTqk Quartz keratophyre dikes (AT002) 410 110 463 QTad Porphyritic dikes and stocks of hornblende andesite and dacite (AT002) 320 1080 Tpb Volcanic rocks, including basaltic, spilitic, and keratophyric lava and tuff. Pillow lava very common. (AT002) 320 1203 Tagr Albite granite (AT002) 300 1530 TMzf Basement rocks - fine-grained banded sedimentary rocks (AT002) 310 1540 TMzc Basement rocks - coarse-grained and conglomeratic sedimentary rocks (AT002) 1790 Orca Group -- melange (TKm, VA002) 24 134 134 Qblk Kvichak Stade (younger advance), Brooks Lake Glaciation (Qblk, CB002) 1420 Migmatite consisting of schist, gneiss, tonalite, and granodiorite (Tmg, SD002) 1415 Biotite-quartz-feldspar gneiss (TKgn, SD002) 1360 Biotite-hornblende and hornblende-biotite tonalite, quartz diorite, and minor granodiorite (TKto, SD002) 1730 Undivided Metamorphic Rocks - phyllite, schist, [para]gneiss, [ortho]gneiss, and marble (Kgn, SD002) 1735 Chlorite phyllite and slate (Kp, SD002) 1740 Greenschist and greenstone (Kgs, SD002) 1745 Marble and calc-silicate granofels (Kmb, SD002) 1750 Biotite schist (Kbs, SD002) 1755 Hornblende schist and amphibolite (Khs, SD002) 836 200 6619 Sab Algal boundstone (TA007) [Overprint symbol 14] 934 400 7510 Olss Tcherskidium-bearing limestone (TA007) 790 600 7570 Ols Lime mudstone (TA007) 902 500 7560 Oab Algal boundstone and lime mudstone (TA007) 934 450 7515 Os Brown and gray 'chippy' shale, silty shale and silicified limestone (TA007) [Overprint symbol 15] 550 8420 PzZun Undifferentiated sedimentary and (or) slightly metamorphosed sedimentary and igneous rocks (YT003) 18