{"text_format":"dbase-jsonl-2026-09-30","columns":[{"name":"DATE_ADD","type":"date","width":8},{"name":"DESCRIPTIO","type":"character","width":254},{"name":"LABEL","type":"character","width":6},{"name":"NSACLASS","type":"number","width":5,"decimals":0},{"name":"OVERPRINT","type":"number","width":3,"decimals":0},{"name":"REC_NO","type":"number","width":4,"decimals":0},{"name":"SYMBOL","type":"number","width":6,"decimals":0}],"n_rows":1328,"rows_kept":1328,"cut":false,"deleted_skipped":0,"read_ended":"whole","bounds":"16MiB/16384/4096/first_that_fit","version":"dbase_level_three","encoding_class":"enc_single_byte","reader":"statdb_count/9"}
[null,"Areas not to be filled that lie within coverage, typically not mapped","nm",98,null,2,978]
[null,"Bedrock of unknown type or age, Rubble of metasiltstone and chert,","bu",99,null,1,978]
[null,"Surficial deposits, undifferentiated","Qs",100,null,3,20]
[null,"Ice fields or glaciers","g",101,null,4,0]
[null,"Water (streams, lakes, ocean)",null,102,null,5,300]
[null,"Tidal flat and estuarine deposits, offshore, subject to inundation","Qtf",103,null,730,210]
[null,"Avalanche deposits","Qad",104,null,6,20]
[null,"Alluvium","Qa",105,null,7,40]
[null,"Alluvial fan and talus deposits","Qaf",106,null,8,20]
[null,"Colluvium","Qc",107,null,9,20]
[null,"Landslide deposits","Qls",108,null,10,20]
[null,"Older alluvium","Qoa",109,null,887,20]
[null,"Terrace deposits","Qt",110,null,11,20]
[null,"Abandoned channel deposits","Qac",111,null,12,20]
[null,"Lacustrine deposits","Ql",112,null,13,20]
[null,"Swamp deposits","Qsw",113,null,14,20]
[null,"Natural levee deposits","Qlv",114,203,1012,20]
[null,"Beach deposits","Qb",115,null,15,20]
[null,"Estuarine deposits","Qes",116,null,16,20]
[null,"Marine terrace deposits","Qmt",117,null,17,20]
[null,"Mineral spring and mud volcano deposits","Qms",118,null,883,20]
[null,"Active dune deposits","Qda",119,null,888,40]
[null,"Dune deposits","Qd",120,null,18,40]
[null,"Loess, Fairbanks loess","Qfl",121,null,19,20]
[null,"Frozen silt, undifferentiated","Qsu",122,null,20,20]
[null,"Glacial outwash derived fans deposited in ephermeral glacial lakes","Qglf",123,131,951,101]
[null,"Glaciolacustrine deposits","Qgl",124,null,889,101]
[null,"Glacial deposits, undivided, of Holocene and/or Pleistocene age","Qm",125,null,21,101]
[null,"Superglacial drift","Qsg",126,null,22,101]
[null,"Rock glacier deposits","Qrg",127,null,23,101]
[null,"Solifluction deposits","Qsf",128,null,24,101]
[null,"Esker deposits","Qek",129,null,25,101]
[null,"Drift, neoglacial","Qhg",130,null,26,101]
[null,"Outwash deposits, Neoglaciation","Qho",131,null,27,101]
[null,"Drift, undivided, Late Wisconsin-age glaciations, Aleknagik, Brooks Lake, Farewell II, McKinley Park,Riley Creek, Donnelly, Takomahto Lake, and others","Qwu",135,null,28,101]
[null,"Latest Wisconsin, Iliuk,  Riley Creek, and other glaciations","Qwr",136,null,29,101]
[null,"Late Wisconsin, Newhalen and other till","Qw2",137,null,30,101]
[null,"Late Wisconsin, Iliamna and other till","Qw1",138,null,31,101]
[null,"Till, Brooks Lake, Kvichak  [Ground moraine assigned Qclass of 1395]","Qw0",139,null,743,101]
[null,"Outwash deposits, late Wisconsin-age Glaciations","Qwo",140,null,32,101]
[null,"Channeled glacial deposits -- kame and kettle? (Qoc, TY007; TL004; 13f, TL007; TY016)","Qoc",141,510,1314,101]
[null,"Drumlin deposits in ground moraine fields of Brooks Lake glacial deposits","Qbld",145,2,953,101]
[null,"Kame fields, and a few narrow and sinuous eskers that contain mainly gravel and sand, poorly to well-bedded and sorted (Qp, Qk3, Qk2, v, AN007; Qk, Qkd, TK008)","Qgk",146,143,1309,101]
[null,"Morainal deposits inferred to have been modified during glacioestuarine inundation (N, T, AN007; Qmm, TY008)","Qgme",147,183,1310,101]
[null,"Deposits of complex origin in the central Cook Inlet basin (FI, AN007; Qf, TY008)","Qgx",148,61,1312,40]
[null,"Glacio-estuarine deposits including Hood Lake  and Mole Creek deposits (h, mC, AN007; Qh, Qh+, Qmc, TY008; Qts, KN013; SV007)","Qge",150,121,1308,40]
[null,"Bootlegger Cove Formation (bc, AN007; Qbc, TY008)","Qbc",151,121,1311,101]
[null,"Rock-defended terraces","Qrd",160,null,33,101]
[null,"Altiplanation terraces","Qat",161,null,34,101]
[null,"Deltaic deposits, including outwash and alluvial deposits","Qdl",170,206,1013,40]
[null,"Glaciations older than Late Wisconsin","Qew",190,203,35,101]
[null,"Drumlins associated with early glaciations","Qewd",191,203,754,101]
[null,"Kame and kame deposits associated with early glaciations","Qewk",192,203,1320,101]
[null,"Early Wisconsin ground moraine","Qmhg",194,203,755,101]
[null,"Older Wisconsin age outwash","Qow",195,203,36,101]
[null,"Illinoian glaciations","Qmi",200,206,37,101]
[null,"Glacial deposits of unnamed Illinoian(?) glaciations, ground moraine","Qmig",201,206,959,101]
[null,"Illinoian glaciation, kame deposits","Qmik",202,203,1321,814]
[null,"Illinoian glacial deposits, modified by innudation","Qmim",204,131,1325,101]
[null,"Outwash older than Wisconsin-age","Qmio",210,206,38,101]
[null,"Deposits related to but peripheral to older glaciations, primarily associated with Cook Inlet region (Qge, K, AN007; Qkd, TY008)","Qod",215,null,1313,71]
[null,"Pliocene(?) glaciations","Tmp",220,136,39,101]
[null,"Very old outwash deposits","Tmpo",221,121,958,101]
[null,"Fringing and fossil carbonate reefs","Qfr",270,143,908,521]
["2010-06-21","Marine conglomerate and limestone (Pls, MW003)","Qmc",271,121,1348,521]
[null,"Glaciallly scoured bedrock; may be covered with thin glacially derived deposits","Qsb",275,null,952,978]
[null,"Surficial deposits, undivided","QTs",280,null,40,40]
[null,"Semiconsolidated marine beach deposits","QTmb",282,null,41,40]
[null,"Tilted sedimentary rocks at South Bight, Amchitka Island","QTts",284,203,1000,40]
[null,"High-level gravel","QTg",285,null,42,40]
[null,"Faneto Formation","QTf",290,136,43,101]
[null,"Placer and anthropogenic deposits","Qpm",295,null,44,40]
[null,"Volcanic rocks, undivided","Qv",300,null,45,4]
[null,"Wrangell Lava, younger part","Qw",301,null,46,4]
[null,"Holocene volcanic rocks","Qhv",305,null,47,2]
[null,"Domes associated with Holocene volcanic centers","Qhd",306,2,1031,2]
[null,"Pyroclastic (Ash and debris flow) deposits","Qpd",310,null,48,133]
[null,"Ash-flow and ash-fall deposits","Qafd",311,null,49,133]
[null,"Debris-flow deposits","Qdf",312,null,50,133]
[null,"Mudflow deposits","Qmf",313,null,51,133]
[null,"Volcanic avalanche deposits","Qav",314,null,52,133]
[null,"Hyaloclastite or aquagene tuff","Qshc",316,null,53,133]
[null,"Bedded volcanic sediments","Qvs",317,null,729,131]
[null,"Cinder and spatter cones","Qcs",320,null,54,2]
[null,"Pit craters and calderas {feature, not really unit}","Qpc",321,null,909,949]
[null,"Explosion debris","Qed",322,null,55,133]
[null,"Basalt of Togiak River Valley, or basalt flows","Qvb",330,null,56,204]
[null,"Trachyte flows","Qvt",333,null,1173,112]
[null,"Mugearite and benmoreite flows","Qvm",334,null,1172,108]
[null,"Andesite and low-silica dacite","Qva",335,136,782,108]
[null,"Dacite and rhyodacite","Qvda",336,206,781,112]
[null,"Rhyolite","Qvr",337,131,783,112]
[null,"Viscous domes in young Hawaiian volcanic rocks, Hawi and Laupahoehoe Volcanic Series","Qvd",340,null,910,422]
[null,"Viscous domes in young Hawaiian volcanic rocks, trachyte","Qvdt",341,null,1169,422]
[null,"Viscous domes in young Hawaiian volcanic rocks, mugearite and benmoreite","Qvdm",342,null,1170,422]
[null,"Viscous domes in young Hawaiian volcanic rocks, basalt","Qvdb",343,null,1171,422]
[null,"Small masses of gabbro in young Hawaiian volcanic rocks, Kahuku Volcanic Series","Qgm",345,206,911,204]
[null,"Basalt","QTb",350,131,57,204]
[null,"Earlier Wrangell Lavas, West Molokai Volcanic Series (upper), Kanapou Volcanic Series (lower), East Molokai, Lanai, Honolua, Wailuku, Honomanu, Plololu, Hamakua, and Ninole Volcanic Series - Early Pleistocene","Qhvu",355,null,912,204]
[null,"West Molokai Volcanic Series (upper) and East Molokai, Lanai, Honolua, Honomanu, Kanapou, Pololu, and Hamakua Volcanic Series cinder, spatter, and littoral cones","Qhcu",356,203,913,204]
[null,"East Molokai Volcanic Series (upper), Honolua Volcanic Series viscous domes","Qhvd",358,136,914,204]
[null,"West Molokai Volcanic Sereis (lower) and Wailuku, Kula, Kanapou, and Pololu Volcanic Series, gabbro masses","Qhgm",359,2,915,204]
[null,"Koolau and West Molokai (lower) Volcanic Series - Early Pleistocene","Qhvl",360,null,907,314]
[null,"Koolau and West Molokai (lower) Volcanic Series, cinder, spatter, and littoral cones - Early Pleistocene","Qhcl",370,206,906,314]
[null,"Intrusive rocks, undivided","Qi",400,null,58,23]
[null,"Dacitic to rhyolitic domes","Qvd",401,null,59,23]
[null,"Andesite plug domes","Qanp",402,null,60,162]
[null,"Radial dike swarm and plug","Qds",403,null,61,23]
[null,"Basalt dome","Qbd",404,2,771,23]
[null,"Quaternary and/or Tertiary volcanic rocks, undifferentiated","QTv",450,null,62,174]
[null,"Andesitic lava","QTa",451,null,63,204]
[null,"Dacite","QTd",452,206,780,21]
[null,"Rhyolite","QTr",453,136,785,21]
[null,"Olivine basalt flows","QTob",454,206,772,204]
[null,"Wrangell Lava","QTw",455,null,64,174]
[null,"Intrusive rocks","QTi",460,203,65,23]
[null,"Quartz keratophyre dikes","QTqk",462,203,66,624]
[null,"Porphyritic dikes and stocks of hornblende andesite and dacite","QTad",463,206,67,624]
[null,"Wrangell Lava, rhyodacite and rhyolite domes and associated pyroclastic rocks","QTva",465,203,68,21]
[null,"Pochnoi Volcanics - Tuff-breccia, lava flows, and agglomerate, largely basaltic","QTvb",466,136,779,204]
[null,"Quaternary and/or Tertiary pyroclastic flow deposits","QTva",470,null,69,21]
[null,"Kiska Harbor Formation","QTk",475,null,775,12]
[null,"Kiska Harbor Formation, breccia member","QTkb",476,203,776,12]
[null,"Kiska Harbor Formation, flow member","QTkf",477,206,777,12]
[null,"Kula volcanic series and equivalents, undivided","QTkv",480,null,1174,204]
[null,"Quaternary or Tertiary metamorphic rocks, particularly in Mt. Dana area on Port Moller map","QTc",490,null,70,293]
[null,"Sedimentary rocks, undivided","Tsu",500,null,71,73]
[null,"Kootznahoo Formation, light greenish gray, medium- to coarse-grained, friable, lithofeldspathic fluvial sandstone and siltstone containing leaf fragments and rare, cm-scale, coal lenses","Tkz",510,null,826,73]
[null,"Milky River Formation","Tmr",530,null,72,32]
[null,"Sterling Formation","Tsf",540,203,73,43]
[null,"Beluga Formation","Tkb",545,206,74,43]
[null,"Tugidak Formation,","QTtg",550,null,75,172]
[null,"Kenai Group, undivided","Tkn",560,null,76,43]
[null,"Kenai Group and West Foreland Formation, undivided","Tkw",561,131,1014,43]
[null,"Yakataga Formation","Ty",565,136,745,32]
[null,"Nenana Gravel, Pliocene and Miocene","Tn",570,null,77,283]
[null,"Nenana Gravel?","Tn?",571,null,78,283]
[null,"Tachilni Formation, Chuniksak Fm.","Tta",572,null,79,63]
[null,"Bear Lake Formation","Tbl",573,null,80,63]
[null,"Narrow Cape Formation","Tnc",580,203,81,365]
[null,"Siltstone of Trinity Islands","Tsti",581,131,998,486]
[null,"Unalaska Formation","Tun",590,206,82,32]
[null,"Tyonek Formation, undivided","Tty",600,136,83,63]
[null,"Unga Formation (Conglomerate)  and Chirikof Fm.,","Tu",610,121,84,63]
[null,"Belkofski Formation","Tbe",611,null,85,192]
[null,"Tyonek Formation and Hemlock Conglomerate, undivided","Ttyh",630,136,86,63]
[null,"Coal-bearing rocks, Miocene? to Eocene?","Tcb",640,null,87,172]
[null,"Hemlock Conglomerate","Th",650,203,88,192]
["2010-04-23","Nevidiskov Fm.","Tnf",651,203,1341,192]
[null,"Sitkinak Formation,","Tsk",660,null,89,192]
[null,"Tsadaka Formation","Tts",670,null,90,192]
[null,"Redwood Formation","Trf",675,131,746,192]
[null,"Poul Creek Formation sedimentary and volcanic rocks, undivided (Tp, BG002; Tps, BG003; CV002; CV003; MI002; Tp, MS002)","Tpc",680,206,747,283]
[null,"Sitkalidak Formation,","Tsi",740,131,91,283]
[null,"Gunners Cove Formation, tuffaceous conglomerate and sandstone, crystal-vitric basaltic tuff, thin basalt flows, and basaltic dikes","Tgc",750,136,1032,283]
[null,"Banjo Point Formation, sandstone, conglomerate, tuffaceous shale, and lapilli tuff of basaltic composition","Tbp",751,136,1033,283]
[null,"Carbonate-terrigenous formations in Bering Sea (Pg2-3, BE002)","Tct",780,143,1317,283]
[null,"Tsadaka and Wishbone Formations, undivided.  Tsadaka is Miocene on (TK002), whereas it is Oligocene on (AN002); Wishbone is Eocene to Paleocene on (TK002) and Eocene on (AN002)","Ttw",790,null,92,283]
[null,"Amphithreatre and Kulthieth, mostly fluvial and lacustrine deposits, local debris-flow deposits; some shallow marine","Tak",794,203,698,283]
[null,"Volcanic and sedimentary rocks, undivided, Oligocene and Eocene","Tvs",795,203,93,283]
[null,"Stepovak and Andrew Lake Formations","Tst",800,null,94,95]
[null,"Tokun Formation","Ttf",810,203,748,95]
[null,"Stillwater Formation(?)","Tswf",820,206,752,95]
[null,"Copper Lake Formation;","Tcl",850,null,95,95]
[null,"West Foreland Formation","Twf",855,206,96,192]
[null,"Tolstoi Formation, Kulthieth Formation","Tt",860,131,97,93]
[null,"Wishbone Formation","Tw",870,136,98,192]
[null,"Siltstone of Oily Lake","Tslo",875,206,749,95]
[null,"early Eocene fluviatile and subordinate volcanic rocks","Tfv",880,131,99,93]
[null,"Arkose Ridge Formation","Tar",890,203,100,93]
[null,"Chickaloon Formation","Tch",900,null,101,93]
[null,"Sedimentary rocks of Jarvis Creek coal field, undivided","Tjc",910,203,102,172]
[null,"Sagavanirktok Formation","Tsg",920,null,965,172]
[null,"Sagavanirktok Formation, Nuwok Member","Tsn",921,206,984,172]
[null,"Sagavanirktok Formation, Franklin Bluffs Member","Tsfb",922,136,985,172]
[null,"Sagavanirktok Formation, White Hills Member","Tswh",923,131,986,172]
[null,"Sagavanirktok Formation, Sagwon Member","Tss",924,203,987,172]
[null,"Sedimentary rocks of the Orca Group, undivided","Tos",950,null,103,474]
[null,"Sedimentary and volcanic rocks of the Orca Group, undivided","Tovs",951,null,104,474]
[null,"Conglomerate of the Orca Group","Toc",952,null,105,474]
[null,"Orca Group:  Dark-gray to black siltstone, mudstone, and minor fine-grained sandstone","Toss",953,203,731,474]
[null,"Ghost Rocks Formation, coherent","TKghc",960,null,1017,630]
[null,"Ghost Rocks Formation, sandstone-rich unit, undivided","TKghs",961,null,1015,670]
[null,"Ghost Rocks Formation, argillite-rich unit, undivided","TKgha",962,null,1016,361]
[null,"Rocks within major fault zones; may be cataclastic or mylonitic, variable ages depending on fault and country rocks","fg",999,null,764,968]
[null,"Tertiary volcanic rocks, undivided","Tvu",1000,null,106,719]
[null,"Rhyolitic volcanic and sedimentary rocks","Trs",1001,206,107,326]
[null,"Dacite","Tda",1002,136,108,326]
[null,"Andesite; on map I-1685 unit Tau was subdivided for Alaska Peninsula map depending on location","Ta",1003,206,109,326]
[null,"Basalt","Tb",1004,203,110,326]
[null,"Hypabyssal intrusive rocks of uncertain age","Thf",1010,203,111,28]
[null,"Hypabyssal felsic and intermediate intrusions.  Age range Paleocene to Miocene, mostly Early Tertiary or Eocene?","Thf",1011,203,112,28]
[null,"Hypabyssal mafic intrusions.  Age range varies, includes Miocene to Paleocene","Thm",1012,null,113,449]
[null,"Modern Aleutian arc volcanic rocks","Tav",1015,null,1304,326]
[null,"Modern Aleutian arc volcanic rocks, andesite","Tava",1017,121,1302,326]
[null,"Modern Aleutian arc volcanic rocks, basalt","Tavb",1018,131,1303,326]
[null,"Hornblende dacite of Jumbo dome","Thd",1022,null,114,126]
[null,"Alkalic basalt flows and pyroclastic rocks","Talb",1023,null,1128,126]
[null,"Paniau, Waimea Canyon, and Waianae Volcanic Series, tholeiitic basalt, olivine basalt and oceanite","Thb",1024,null,902,126]
[null,"Intricate Basalt","Tib",1025,null,115,126]
[null,"Gibraltar Lake Tuff, Upper member","Tpgu",1030,203,116,126]
[null,"Gibraltar Lake Tuff, Lower member","Tpgl",1031,206,117,126]
[null,"Waimea Canyon Basalt; Makaweli Member ash and tuffaceous soil","Twca",1035,203,904,126]
[null,"Waimea Canyon Basalt and Waianae Volcanics, cinder, spatter, or littorial cones","Thc",1036,206,905,126]
[null,"Wrangell Lava, Pliocene to Oligoocene lower part, undivided","Twl",1040,null,820,126]
[null,"Wrangell Lava, rhyolitic rocks, undivided","Twr",1041,136,821,126]
[null,"Wrangell Lava, obsidian-bearing rhyolite flow","Twor",1042,203,822,126]
[null,"Wrangell Lava, dome and hypabyssal rocks","Twd",1043,131,819,126]
[null,"Paniau, Waimea Canyon, and Waianae Volcanic Series, small mass of gabbro","Thgm",1045,null,903,449]
[null,"Paniau Basalt","Tpb",1046,null,1175,314]
[null,"Miocene volcanic rocks","Tv",1050,null,118,307]
[null,"Miocene and Pliocene andesite and basalt","Tab",1051,null,119,307]
[null,"Miocene basaltic andesite","Tba",1052,null,120,307]
[null,"Miocene and/or Pliocene hypabyssal dacite and rhyolite intrusions, includes unit Tdp, Dacite plugs on I-1229; rhyolite and dacite dikes and sills","Tdi",1053,136,121,28]
[null,"Rhyolite","Tmrf",1054,206,827,307]
[null,"Wrangell Lava, hypabyssal and plutonic rocks","Twp",1055,131,990,307]
[null,"Olivine basalt flows and cinder cones","Tmb",1056,null,1141,307]
[null,"Cenotaph Volcanics, undivided","Tcv",1059,136,1103,307]
[null,"Admiralty Island volcanics, undivided","Tav",1060,136,935,307]
[null,"Admiralty Island and Cenotaph Volcanics, rhyolite","Tacr",1061,206,936,307]
[null,"Admiralty Island and Cenotaph Volcanics, dacite","Tavd",1062,131,937,307]
[null,"Admiralty Island and Cenotaph Volcanics, andesite","Tava",1063,131,938,307]
[null,"Admiralty Island and Cenotaph Volcanics, basalt","Tavb",1064,null,939,307]
[null,"Admiralty Island and Cenotaph Volcanics, volcaniclastic rocks","Tavc",1065,2,940,307]
[null,"Lavas and pyroclastic deposits, most likely Miocene or younger Tertiary","Tlp",1066,131,784,307]
[null,"Lavas and pyroclastic deposits, early Miocene; Unga Arc","Temv",1069,131,1254,314]
[null,"Crystal and crystal-lithic ash-flow tuff","Tvr",1070,null,122,314]
[null,"Volcanic rocks, including basaltic breccia, tuff and a few pillow lava flows; Vega Bay Formation.  Also, volcanic rocks of Poul Creek Formation","Tpb",1080,null,123,314]
[null,"Meshik Volcanics (Formation); Mt. Galen volcanics; Ship Creek, Windy Fork, and Terra Cotta volcanic fields, McGrath","Tvb",1081,null,124,314]
[null,"Basaltic lavas of the Meshik volcanic arc","Tvb",1082,null,125,314]
[null,"Andesitic and dacitic rocks of the Meshik volcanic arc","Tvm",1083,null,126,314]
[null,"Andesite plug dome","Tap",1084,null,127,326]
[null,"Popof volcanic rocks, only in Shumagin Islands = Meshik","Tp",1085,null,128,326]
[null,"Rhyolitic to dacitic volcanic rocks","Tvrd",1086,null,866,314]
[null,"Chiefly block and ash deposits, mafic to felsic tuff, tuff breccia, lapilli tuff, and unclassified pyroclastic deposits","Tvc",1087,136,825,314]
[null,"Mafic dikes, sills, and plugs","Tmd",1090,null,756,449]
[null,"Krugoli Formation, lava.","Tkv",1094,2,1037,326]
[null,"Krugoli Formation, tuff and tuff-agglomerate.","Tka",1095,131,778,326]
[null,"Basement rocks, including basaltic, spilitic, and keratophyric lava and tuff.  Pillow lava very common, western Aleutian Islands","TMzbv",1096,2,1038,615]
[null,"Andesite and basalt flows","Tvab",1103,null,129,314]
[null,"Moderately altered rhyolite flows, Nukluk Volcanic Field","Tver",1110,203,130,314]
[null,"Massive basalt and andesite, Nukluk Volcanic Field","Tvnb",1111,null,131,307]
[null,"Rhyolitic and dacitic tuff (44 Ma)","Trd",1112,null,1115,314]
[null,"Tuff and breccia, Eocene or Paleocene","Tvep",1120,131,132,314]
[null,"Felsic hypabyssal intrusions [within unit Tfu of HC002]","Tvei",1121,136,133,314]
[null,"Mafic basalt, layered tuff, tuff breccia and breccia","Tbep",1125,206,853,314]
[null,"Intermediate to felsic biotite tuff","Tvig",1130,131,864,26]
[null,"Orca Group, volcanic rocks, undivided, Paleocene and Eocene?","Tov",1135,null,134,307]
[null,"Orca Group:  Pillow basalt","Top",1136,206,732,307]
[null,"Orca Group, sheeted dikes, Paleocene and Eocene?","Tosd",1137,2,1187,326]
[null,"Cantwell Formation, volcanic rocks subunit","Tcv",1140,null,135,307]
[null,"Soda rhyolite and basalt","Tsr",1145,203,136,307]
[null,"Ghost Rocks Formation, andesitic volcanic and hypabyssal rocks","Tgva",1150,null,1018,307]
[null,"Ghost Rocks Formation, basalitic volcanic and hypabyssal rocks","TKgvb",1151,206,1019,866]
[null,"Intermediate to felsic biotite tuff","Tfv",1160,131,1214,26]
[null,"Intermediate to mafic volcanic rocks, Paleocene","Tpv",1170,203,1255,26]
[null,"Tertiary intrusive rocks, undivided","Tiu",1200,null,137,39]
[null,"Granite","Tgr",1203,null,138,26]
["2010-04-29","Quartz monzonite and similar rocks","Tqm",1204,136,1346,26]
[null,"Granodiorite, undivided","Tgd",1205,null,139,26]
[null,"Gabbro and diorite, undivided","Tgb",1207,null,140,409]
[null,"Granitic and volcanic rocks, undivided.  Age range Oligocene to Paleocene","Tiv",1210,null,141,39]
[null,"Wrangell Lavas, shallow plutons, chiefly dacite, diorite, and quartz diorite","Twh",1234,206,989,338]
[null,"late Miocene and Pliocene granitic intrusive rocks of the Agripina Bay, Moss Cape, American Bay, and Devils batholith and other similar age plutons","Ti",1250,null,142,338]
[null,"Granite and granitic rocks","Tmgr",1251,null,823,338]
[null,"Quartz monzonite","Tmog",1252,203,789,338]
[null,"Diorite,","Td",1253,null,143,39]
[null,"Gabbro,","Tgg",1254,null,144,39]
[null,"Granitic rocks","Togr",1270,null,145,39]
[null,"Granite and quartz monzonite porphyry","Togp",1271,131,786,39]
[null,"Peralkaline granite and related rocks","Tpag",1272,null,1294,24]
[null,"Granodiorite and quartz diorite","Togd",1273,136,895,39]
[null,"Quartz diorite and diorite","Toqd",1275,203,146,39]
[null,"Gabbroic rocks","Togb",1276,21,1020,39]
[null,"Oligocene basalt plug","Tobp",1285,206,147,39]
[null,"Granitic rocks","Toegr",1290,null,148,39]
[null,"Granodiorite to tonalite","Toem",1292,null,149,409]
[null,"Oligocene and Eocene diorite","Toed",1293,136,852,409]
[null,"Gabbro or gabbro and diorite, Prince William Sound","Toeg",1294,null,1204,399]
[null,"Granite and granodiorite, Tertiary(?) Eocene?","Tegr",1300,null,150,55]
[null,"Felsic intrusions, leucocratic dikes, sills and small stocks, south of Border Ranges fault","Tfd",1301,null,151,46]
[null,"White Pass Plutonic Province, Biotite granite and sphene-biotite granite","Tegr",1302,null,1104,46]
[null,"Coast Plutonic Complex","Tegd",1305,203,802,46]
[null,"Quartz monzonite, monzonite breccia, and quartz porphyry","Tgmp",1307,null,152,46]
[null,"Quartz diorite","Teqd",1308,206,882,28]
[null,"Porphyritic granodiorite distinctive phase of Coast Plutonic Complex","Tgdp",1309,206,803,46]
[null,"Tonalite","Tet",1310,null,153,46]
[null,"Gabbronorite and norite","Tgn",1318,203,1021,99]
[null,"Granitic rocks, including early Tertiary granitic intrusive rocks of the Kodiak, Shumagin, Semidi, and Sanak Islands","Tg",1320,null,154,99]
[null,"Peralkaline granite","Tpgr",1325,131,1117,28]
[null,"Hypabyssal granitic rocks","Tgh",1330,138,1256,28]
[null,"Granitic rocks, ranging from granite to granodiorite, mostly felsic","Tpg",1340,null,1293,199]
[null,"Biotite-hornblende granodiorite,","Thgd",1350,121,155,99]
[null,"Biotite diorite","Tpd",1360,143,1257,39]
[null,"Dark-colored dikes and sills consisting of diabase, basalt, dioritic and gabbroic mafic intrusive rocks","Tim",1370,null,156,446]
[null,"Orca Group gabbro and diorite","Togb",1374,null,1205,496]
[null,"Orca Group ultramafic rocks","Tou",1375,null,750,446]
[null,"Hornblende and pyroxene-hornblende gabbro","Tgl",1380,null,157,446]
[null,"Cottonwood Creek Complex, gniess and amphibolite","Tgma",1410,null,158,807]
[null,"Migmatite associated with Tertiary plutons (TKmm, MF003)","Tomg",1425,206,1318,46]
[null,"Leucocratic granodioritic migmatite of the Coast Plutonic Complex","Tcpm",1450,136,828,46]
[null,"Another Coast Plutonic Complex migmatite","Tcpm2",1451,131,830,46]
[null,"Conglomerate, sandstone, and lignite","TKcg",1510,null,159,361]
[null,"Prince Creek Formation, shelf deposits","TKpc",1515,131,983,990]
[null,"Canning Formation, basinal turbidite deposits","TKcf",1518,131,1009,361]
[null,"Conglomerate and sandstone","TKcs",1520,null,160,361]
[null,"Marine and nonmarine conglomerate to shale, Jago","TKcm",1525,136,1001,361]
[null,"Krugoli Formation, undifferentiated","Tk",1530,null,161,361]
[null,"Basement rocks - coarse-grained and conglomeratic sedimentary rocks","Tkc",1540,203,162,361]
[null,"Basement rocks - undifferentiated","TMzu",1550,null,773,990]
[null,"Basement rocks - fine-grained sedimentary rocks.","TMzf",1552,131,1036,990]
[null,"Basement rocks - conglomerate, argillite, siltstone, and chert.","TMzc",1553,136,774,990]
[null,"Extrusive rocks, flows, tuff, and breccia","TKv",1600,null,163,354]
[null,"Dikes and subvolcanic rocks","TKd",1601,136,164,354]
[null,"Hypabyssal granite porphyry dikes, sills, and plugs","TKgp",1602,131,165,354]
[null,"Volcanic rock, light gray to pink rhyolite","TKvr",1603,203,166,354]
[null,"Volcanic rocks, dacite","TKvd",1604,203,167,354]
[null,"Younger phase of Iditarod Volcanics and similar units","TKvi",1605,206,168,354]
[null,"Felsic tuff","TKv",1615,null,169,354]
[null,"Rhyolite-andesite plugs and domes","TKd",1620,136,170,354]
[null,"Felsic volcanic rocks","TKvr",1625,203,171,354]
[null,"Mafic to intermediate volcano-plutonic complexes","TKiv",1630,null,172,44]
[null,"Basalt and andesite, Whitefish Lake volcanic field","TJb",1631,203,1040,44]
[null,"Flat-lying to gently dipping mafic flows of andesite and basalt, and volcaniclastic deposits of andesitic and basaltic tuff and conglomerate","TKmv",1635,null,173,44]
[null,"Mafic and ultramafic intrusive rocks including pluglike body of augite andesite porphyry and a small dikelike body of augite peridotite","TKum",1640,null,174,446]
[null,"Mafic dikes","TKmd",1641,null,977,446]
[null,"Intrusive rocks","TKi",1650,206,175,39]
[null,"Granitic rocks","TKg",1655,null,176,58]
[null,"Granite and alaskite","TKgr",1656,203,1106,58]
[null,"Syenitic rocks","TKgs",1657,136,1107,58]
[null,"Quartz monzonite, granodiorite, and quartz monzodiorite including Mount Estelle granodiorite","TKgm",1658,131,1108,58]
[null,"More mafic granitic rocks, tonalite,  monzonite","TKgd",1660,null,177,36]
[null,"Foliated tonalite sill of Coast Plutonic Complex","TKtf",1662,136,804,36]
[null,"Tonalite migmatite of the tonalite sill of the Coast Plutonic Complex","TKtm",1663,null,829,36]
[null,"Granitic unit 3, quartz diorite and diorite dikes, stocks, and small plutons","TKqd",1665,206,178,58]
[null,"Gabbro and dark-colored dikes and sills consisting of diabase, basalt, dioritic and gabbroic mafic intrusive rocks","TKgb",1670,null,179,937]
[null,"Trondhjemitic pegmatite","TKtp",1676,206,787,36]
[null,"Gabbro, undifferentiated, Tertiary to Devonian age","TDg",1680,null,180,937]
[null,"Gabbro and diorite, Tertiary to Jurassic age","TJgd",1681,null,1034,309]
[null,"Mafic intrusive rocks, Nyack terrane","TJm",1682,null,1035,309]
[null,"Lamprophyre, alkali gabbro, and alkali diorite","TKl",1690,null,181,309]
[null,"Cataclastite","TKc",1710,136,182,146]
[null,"Gneissose granitic rocks","TKgg",1720,203,183,146]
[null,"Gneissose mafic rocks","TKmg",1730,null,1243,146]
[null,"Ghost Rocks","TKgh",1780,null,184,146]
[null,"Orca Group melange","TKmx",1790,136,185,146]
[null,"Undivided marine and non-marine shale and siltstone","Knb",1805,null,186,562]
[null,"Sandstone (Ksr, MK004)","Ksr",1806,136,1319,562]
[null,"Calcareous graywacke and mudstone, volcanic graywacke, and volcanic conglomerate","Kcvg",1820,null,188,763]
[null,"Calcareous graywacke and micaceous, calcareous mudstone turbidite deposits","Kcg",1821,143,189,562]
[null,"Nonmarine and marine carbonate-rich conglomerate and sandstone deltaic deposits","Kcc",1822,null,190,570]
[null,"Conglomeritic facies of carbonate-rich sandstone, siltstone, and shale turbidite deposits.","Kcgc",1823,121,191,562]
[null,"Graywacke of the Yenlo Hills","Kyh",1824,135,1263,562]
[null,"Shale and siltstone","Ksh",1905,203,192,782]
[null,"Sandstone, Late Cretaceous","Ksa",1906,206,193,782]
[null,"Volcaniclastic sandstone","Kvss",1907,136,194,782]
[null,"Shumagin Formation","Kshf",1912,null,195,361]
[null,"Hoodoo Formation","Kh",1913,206,196,341]
[null,"Shumagin Formation, mudstone member","Ksmd",1916,206,197,361]
[null,"Kodiak Formation","Kkf",1917,null,198,361]
[null,"Cantwell Formation, sedimentary rocks subunit","Kcs",1920,203,199,570]
[null,"Schrader Bluff Formation","Ksb",1930,null,982,341]
[null,"Schrader Bluff Formation, upper member","Ksbu",1931,null,1127,341]
[null,"Schrader Bluff Formation, middle member","Ksbm",1932,null,1123,341]
[null,"Schrader Bluff Formation, lower member","Ksbl",1933,null,1124,341]
[null,"Late Cretaceous undifferentiated clastic rocks","Ku",1940,null,200,782]
[null,"Non-marine sandstone, quartz conglomerate, shale, and siltstone","Kss",1941,131,201,772]
[null,"Limy volcaniclastic sandstone","Kk",1942,null,202,782]
[null,"Non-marine shale, siltstone, and sandstone","Kshn",1943,131,203,562]
[null,"Kaguyak Formation","Kkg",1955,136,204,341]
[null,"Chignik Formation","Kc",1960,203,205,391]
[null,"Chignik and Hoodoo Formations, undivided.  Also includes Late Cretaceous rocks called Kaguyak Fm. on the west side of Cook Inlet in the Seldovia quad","Khc",1961,136,206,391]
[null,"Kuskokwim Group, sandstone, siltstone, shale, and conglomerate","Kk",1970,null,207,782]
[null,"Volcanic provenance sandstone, siltstone, and shale, Kuskokwim Group","uKss",1971,203,738,782]
[null,"Minto unit, siltstone, mudstone, graywacke, quartzose sandstone, plant fragments, Late Cretaceous(?)","Kms",1980,131,208,391]
[null,"Kuskokwim Group, nonmarine to marginal marine quartzose sandstone and siltstone","Kkn",1985,131,209,782]
[null,"Quartz-pebble conglomerate, early Late Cretaceous","Kqc",1990,206,210,772]
[null,"Tuluvak Formation (includes Ayiyak Member of Seabee Fm.)","Ktu",1995,206,981,562]
[null,"Matanuska Formation, fossiliferous marine shale, late Early Cretaceous to Late Cretaceous","Km",2010,null,211,570]
[null,"Melozitna group, informal name; Shaktolik (sp) Group (abandoned name), graywacke, shale, grit, and conglomerate","Kme",2020,null,212,772]
[null,"Sandstone, shale, and conglomerate deltaic deposits  [see also 2180]","Kme",2021,null,213,772]
[null,"Rhyolite and dacite, and sandstone, shale, and conglomerate deltaic deposits and intricately intruded areas of volcanic graywacke and mudstone, late Early Cretaceous (Albian)","Ksi",2023,21,214,570]
[null,"Undivided Lower Cretaceous sedimentary rocks, northern Alaska","Klu",2025,null,1208,570]
[null,"Igneous pebble-cobble conglomerate, Albian and Late Cretaceous?","Kipc",2030,136,215,772]
[null,"Seabee Formation (now only former Shale Wall Member)","Ksbf",2040,203,966,772]
[null,"Seabee Formation and Nanushuk Formation, undivided (Ksn, IK003; LR002)","Ksbn",2050,null,1328,481]
[null,"Nanushuk Formation, includes former Kukpowruk, Tuktu, Grandstand, Corwin, Chandler, and Ninuluk Formations, now abandoned","Knf",2070,203,980,772]
[null,"Nanushuk Formation, upper part","Knu",2071,131,1125,772]
[null,"Nanushuk Formation, lower part","Knl",2072,206,1126,772]
[null,"Torok Formation, Aptian to Cenomanian","Kto",2080,206,978,570]
[null,"Torok and Fortress Mountain Formations, undivided, Aptian to Cenomanian","Ktfm",2081,131,979,570]
[null,"Early Cretaceous Nelchina Limestone","Knls",2100,143,216,341]
[null,"Marine sandstone and siltstone, Early Cretaceous","Ksse",2101,null,217,591]
[null,"Calcareous graywacke and conglomerate","Kgcg",2102,206,744,591]
[null,"Volcanic graywacke and mudstone, late Early Cretaceous (Albian)","Kvgm",2105,null,218,894]
[null,"Conglomeratic facies, Volcanic conglomerate and breccia","Kvcc",2106,121,219,570]
[null,"Berg Creek Formation  and Nelchina Limestone","Kbc",2110,null,220,341]
[null,"Early Cretaceous flysch, Wilber Creek unit","Kwcf",2115,121,221,541]
[null,"Pedmar Formation, Albian","Kp",2120,131,222,341]
[null,"Kandik Group equivalent, Mount Goodenough in Yukon?","Kkd",2122,null,691,591]
[null,"Kandik Group; Kathul Graywacke","Kkt",2124,203,690,591]
[null,"Quartz-carbonate sandstone and pebbly mudstone, Early Cretaceous, Valanginian-Aptian","Ksm",2125,203,223,341]
[null,"Biederman Argillite, Kandik Group, Valanginian","Kba",2126,136,224,591]
[null,"Kongakut Formation, pebble shale and siltstone","Kko",2127,203,999,341]
[null,"Pebble Shale unit","Kps",2128,131,1010,591]
[null,"Cape Current terrane","Kcct",2130,null,225,622]
[null,"Keenan Quartzite, Kandik Group, Valanginian","Kkq",2135,136,226,960]
[null,"Argillite, Early Cretaceous(?)","Karg",2140,131,227,591]
[null,"Unnamed sandstone along Nation River, stratigraphically below Keenan Quartzite","Kus",2145,206,872,591]
[null,"Herendeen Formation or Limestone on some maps;","Khe",2150,143,228,772]
[null,"Limestone, Early Cretaceous(?), primarily Inoceramus prisms","Kli",2151,143,229,772]
[null,"Marine mudstone and sandstone","Kmd",2152,null,230,591]
[null,"Ungalik Conglomerate [Not used]","Kuc",2170,null,231,960]
[null,"Staniukovich Formation","Kst",2175,null,232,960]
[null,"Earliest Cretaceous volcanic graywacke and conglomerate","Kvm",2180,null,233,894]
[null,"Earliest Cretaceous volcanic conglomerate","Kvm",2181,null,234,894]
[null,"Earliest Cretaceous volcanic conglomerate","Klvm",2182,null,770,541]
[null,"Fortress Mountain Formation, interbedded wacke and mudstone","Kfm",2184,203,988,982]
[null,"Okpikruak Formation and may include Fortress Mountain Formation, interbedded wacke and mudstone","KJo",2185,131,960,982]
[null,"Coquina limestone of the Okpikruak Formation","Kofc",2186,143,1041,982]
[null,"McHugh Complex, Uyak Complex, melange","Kmk",2190,null,235,812]
[null,"Phyllite/greenstone melange; occurs structurally between the McHugh Complex and Valdez Group","Mzpg",2191,206,753,913]
[null,"Melange south of McKinley Fault","Kmar",2192,null,236,913]
[null,"Melange south of McKinley Fault, limestone blocks","TrSl",2193,143,237,408]
[null,"Melange north of McKinley Fault, ultramafic rocks","Kmu",2194,203,1332,408]
[null,"Melange north of McKinley Fault [same as Kmy and Kmz in Healy quad?, subdivided also on map])","Kmar",2195,null,238,913]
[null,"Melange north of McKinley Fault, limestone blocks ( (mnl)Kmn, HE002)","TrSl",2196,143,239,913]
[null,"Uyak Complex, gabbro and ultramafic rocks","Kmku",2197,203,240,408]
[null,"McHugh Complex, graywacke and conglomerate","KJms",2198,null,1177,913]
[null,"McHugh Complex, basalt and chert","KTrmc",2199,null,1178,408]
[null,"Hypabyssal rocks, dacite and rhyolite porphyry","Kvfp",2210,21,241,158]
[null,"South Fork Volcanics, locally columnar jointed, massive, densely welded, biotite-quartz-hornblende-feldspar crystal tuff","Ksf",2220,2,703,158]
[null,"Intermediate and felsic volcanic rocks","Kvi",2225,131,1258,324]
[null,"Cretaceous basalt, local pillow flows, probably early Cretaceous","Kvb",2230,null,242,324]
[null,"Andesitic subvolcanic rocks","Ksva",2255,null,243,158]
[null,"Basaltic subvolcanic rocks","Ksvb",2256,null,244,158]
[null,"Iditarod Volcanics, Kipchuk Volcanic Field, and similar units, flows, tuff, and agglomerate","Kvl",2260,null,245,158]
[null,"Iditarod Volcanics, Kipchuk Volcanic Field, and similar units, tuff dominated units","Kvt",2261,2,1186,158]
[null,"Intermediate and silicic pyroclastic deposits","Kpd",2265,206,246,158]
["2010-03-16","Intermediate and silicic pyroclastic deposits","Kwt",2270,206,1334,158]
[null,"Tuff, volcanic graywacke, and mudstone","Ktg",2320,136,247,158]
[null,"Andesitic volcanic rocks (earliest Cretaceous, Neocomian, but may include Albian)","Kva",2330,131,248,158]
[null,"Spilitic pillow basalt and diabase , see also 2230","Kbd",2335,null,249,324]
[null,"Shoshonitic flows and tuffs (Kft, UL002) [Overprint symbol 13]","Kft",2336,203,792,158]
[null,"Chisana Formation, andesitic flows and volcaniclastic rocks, also includes Gravina Belt volcanics in southeast Alaska, which may also be in part Late Jurassic in age","Kcve",2340,203,250,158]
[null,"Dikes, granite to diorite","Kdg",2400,null,251,78]
[null,"Basaltic andesite dikes","Kd",2401,null,252,78]
[null,"Pegmatite","Kpg",2405,131,253,78]
[null,"Granitic Rocks","Kgu",2410,null,254,78]
[null,"Tourmaline bearing granite","Kgt",2411,null,255,78]
[null,"Granodiorite","Kgd",2420,null,257,78]
[null,"Quartz diorite","Kqd",2430,null,258,188]
[null,"Gabbro of Mount Moffit","Kmum",2440,null,259,838]
[null,"Serpentinite, diabase, gabbro, and mafic volcaniclastic rocks","Kmum",2445,null,260,838]
[null,"Alaskite [< 85 Ma]","Kga",2450,203,261,78]
[null,"Granite [< 85 Ma]","Kgl",2460,203,262,78]
[null,"Syenite [< 85 Ma]","Kgs",2465,203,263,78]
[null,"Quartz monzonite, monzonite, and syenite [< 85 Ma]","Kgk",2470,203,264,78]
[null,"Granite","Kgm",2475,null,265,78]
[null,"Granodiorite","Kgdt",2480,null,266,78]
[null,"Granite 85-110 Ma","Kmg",2490,136,740,78]
[null,"Quartz monzonite, monzonite, and syenite 85-110 Ma","Kmqm",2491,136,741,78]
[null,"Intermediate granitic rocks, mostly granodiorite (Kwqo, PE002; Kwqo, Kwan, PE003) [Overprint symbol 16]","Kmgd",2492,131,835,78]
[null,"Intermediate granitic rocks, mostly quartz diorite and tonalite, magmatic garnet and epidote 85-110 Ma","Kmqd",2493,136,742,78]
[null,"Gabbro (not zoned ultramafic)","Kmgb",2494,null,824,838]
[null,"Ultramafic rocks, especially including zoned ultramafic bodies of southeast Alaska","Kmum",2495,null,788,838]
[null,"Diorite","Kmd",2496,136,1284,918]
[null,"Alkaline dikes","Kmad",2497,121,1285,78]
["2010-05-10","Mafic plutonic rocks, mostly diorite and quartz diorite with subordinate tonalite and gabbro 85-110 Ma.  Southeast Alaska (Kkhd, SK003; Kdqd, SK005; Kd, SK006)","Kdqd",2498,101,1347,78]
[null,"Serpentinized ultramafic rocks","Kmum",2510,null,267,838]
[null,"Granite (lKgg, RB009) [Overprint symbol 14]","Keg",2515,206,268,78]
[null,"Slana pluton, hornblende granodiorite, Nabesna pluton, granodiorite and quartz diorite, Antler Creek pluton, syenodiorite, Border of Antler Creek pluton, hornblendite, Klein Creek pluton, granodiorite and quartz monzonite [>110 Ma]","Keg",2520,206,269,78]
[null,"Foliated granodiorite","Kgdf",2521,203,1221,918]
[null,"Quartz-feldspar porphyry [>110 Ma]","Keg",2525,206,270,78]
[null,"Quartz monzonite [>110 Ma]","Keg",2530,206,271,78]
[null,"Nephelene syenite","Kns",2535,131,272,78]
[null,"Diorite, quartz diorite and syenodiorite [>110 Ma]","Keg",2540,206,273,78]
[null,"Syenite","Ksy",2545,206,274,78]
[null,"Gabbro of Tenakee Inlet on Chichagof Island","Kegb",2550,null,863,838]
[null,"Leucotonalite and trondjemite","Ktt",2570,206,275,78]
[null,"Foliated (or cataclastic/mylonitic) quartz diorite","Kgdc",2590,null,276,918]
[null,"Metamorphosed granitic rocks, wide range of compositions from quartz monzonite to diorite","Kmi",2600,null,277,918]
[null,"Migmatite associated with Cretaceous plutons of southern Brooks Range","Kmn",2610,131,1211,78]
[null,"Foliated quartz monzonite and granodiorite","Kqm",2620,203,790,991]
[null,"Migmatite associated with western plutonic belt of southeast Alaska (Wales-Chichagof arc)","Kmg",2625,131,867,78]
[null,"Migmatite and migmatitic schist","Mzsa",2630,null,278,860]
[null,"Hornfels and gniess [Also gneissose areas within hornfels, largely on the Tanana geologic map","Khg",2640,2,279,0]
[null,"Rocks of Hammond River shear zone","Khs",2650,null,1212,860]
[null,"Metagabbro, metadiabase, and minor amphibolite","Kmum",2670,null,280,838]
[null,"Intermediate volcanic and sedimentary rocks","Kivs",2680,203,1260,324]
[null,"Metasedimentary rocks of the Valdez Group","Kvs",2700,null,281,361]
[null,"Valdez Group, Interbedded volcanic and sedimentary rocks","Kvvs",2702,121,751,361]
[null,"Valdez Group, metavolcanic rocks, undivided","Kvv",2705,null,282,909]
[null,"Laminated tuff, Valdez Group (Kvt, AN002; SR004; BS004)","Kvgb",2706,null,696,838]
[null,"Valdez Group, melange of Iceworm Peak","Kvml",2708,null,1179,822]
[null,"Valdez Group -- Schistose metaflysch","Kvg",2710,131,735,361]
[null,"Valdez Group -- Schistose to gneissic metaflysch and migmatite","Kvsg",2715,206,736,909]
[null,"Pelitic schist","Kps",2750,null,348,990]
[null,"Telavirak Formation","KJtf",2805,null,1184,562]
[null,"Telavirak and Ogororuk Formations, undivided (KJot, PH004)","KJto",2806,206,1307,562]
[null,"Argillite, chert, sandstone, and limestone","KJs",2810,206,283,960]
[null,"Wilber Creek and Wolverine quartzite units, undivided","KJwc",2812,203,284,960]
[null,"Wolverine unit, quartzite and interbedded shale and siltstone, Late Jurassic or Early Cretaceous","KJw",2815,null,285,960]
[null,"Quartzite of the Wolverine quartzite unit","KJwq",2816,136,286,960]
[null,"Sandstone and shale of the Wolverine quartzite unit","KJws",2817,206,287,960]
[null,"Marine sedimentary rocks of Gravina-Nuzotin unit","KJfn",2820,206,288,541]
[null,"Conglomerate, sandstone, siltstone, shale, and volcanic rocks, westernmost outcrops of the Gravina-Nuzotin belt","KJcg",2821,136,289,541]
[null,"Sedimentary and volcanic rocks of the Gravina belt, undivided","KJgb",2822,203,897,562]
[null,"Conglomerate and sandstone, possibly northern shore facies of Nutzotin Mountains sequence","Mzc",2824,2,942,541]
[null,"Metasedimentary rocks","KJfm",2825,null,290,541]
[null,"Marine volcaniclastic sandstone, conglomerate, and argillite","KTrs",2830,null,757,960]
[null,"Marine volcaniclastic sandstone, conglomerate, and argillite apparently cut by dikes or shallow intrusions","KTrsi",2831,2,1029,960]
[null,"Argillite and tuffaceous chert","KJc",2832,null,1165,450]
[null,"Kingak Shale","KJks",2834,null,1183,562]
[null,"Pebble shale and Kingak Shale, undivided","KJsh",2835,136,1008,562]
[null,"Yakutat Group, undivided","KJyg",2840,null,873,391]
[null,"Yakutat Group, flysch facies","KJys",2841,203,874,391]
[null,"Flysch sequence, Early Cretaceous and Late Jurassic","KJf",2850,null,291,541]
[null,"Flysch sequence (Early Cretaceous and Late Jurassic","KJf",2851,null,292,541]
[null,"Flysch sequence, Late Cretaceous to Late Jurassic (unit KJfl, HE002; KJm, MG002; KJs, TL002) [Overprint symbol 14]","KJf",2852,null,293,541]
[null,"Feldspathic sedimentary rocks","Ksf",2853,143,1261,541]
[null,"Turbiditic sedimentary and volcanic rocks","Kesv",2854,138,1262,541]
[null,"Koksetna River sequence, Jura-Cretaceous flysch, southern part of Kahiltna terrane","KJkr",2855,null,865,541]
[null,"Vrain unit, pyritiferous shale and minor siltstone; not flysch, equivalent to upper part of Glenn Shale","KJvr",2860,131,294,960]
[null,"Glenn Shale, upper unit, Early Cretaceous to Middle Jurassic","KJgu",2861,131,295,960]
[null,"Sitka Graywacke, undivided","KJsgu",2865,2,1076,909]
[null,"Sitka Graywacke graywacke and argillite","KJsgs",2866,136,1077,909]
[null,"Basalt and andesite flows, Whitefish Lake volcanic field, Nyac terrane","KJba",2870,null,1167,982]
[null,"Volcanic and sedimentary rocks","KJvs",2872,203,894,982]
[null,"Olivine basalt","KJv",2873,null,296,982]
[null,"Tuffaceous subunit of unit MzPzat","KJvt",2875,null,297,982]
[null,"Chert and volcanic sequence (Late Cretaceous and(?) Jurassic,)","KJcv",2880,null,298,982]
[null,"Highly altered hypabyssal rhyolite and dacite","TJih",2885,null,299,982]
[null,"Pillow basalt","JTrtv",2890,203,300,709]
[null,"Volcanic Rocks of the Sitka Graywacke","KJsv",2891,206,1075,982]
["2010-03-30","Volcaniclastic rocks of the Brooks Range.  May be included in Okpikruak Formation","KJvc",2895,121,1339,982]
[null,"Granitic rocks and minor monzonite","KJg",2900,null,301,277]
[null,"Saint Elias Suite, biotite hornblende granodiorite; lesser tonalite; locally quartz monzodiorite, quartz diorite, granite, and quartz monzonite","KJse",2910,null,709,277]
[null,"Gabbro and diorite","KJgg",2920,null,302,826]
[null,"Ultramafic rocks (Early Cretaceous or Jurassic) [Compare to Kum (AN002)]","KJmu",2945,null,303,826]
[null,"Yakutat Group, melange facies","KJyx",2950,121,875,913]
[null,"Yakutat Group, melange facies, sandstone masses","KJyxs",2951,206,876,913]
[null,"Yakutat Group, melange facies, conglomerate masses","KJyxc",2952,206,877,913]
[null,"Yakutat Group, melange facies, greenstone masses","KJyxg",2953,206,878,812913]
[null,"Yakutat Group, melange facies, tonalite masses","KJyxd",2954,206,879,812913]
[null,"Khaz melange or melange associated with the Sitka Graywacke","KJsx",2955,121,1101,913]
[null,"Khaz melange, sandstone mass","KJks",2956,206,1102,913]
[null,"Marine metasedimentary rocks, flysch, Early Cretaceous and Late Jurassic, part of the Gravina-Nuzotin belt","KJfm",2970,136,304,541]
[null,"Undifferentiated greenstone, metapelitic rocks, and metasandstone of the Gravina belt","KJgm",2971,131,896,541]
[null,"Deformed, disrupted, and metamorphosed mafic to intermediate and minor felsic volcanic rocks, (Gravina?)","KDvd",2972,206,1152,277]
[null,"Metamorphic rocks of the Brabazon Range (Yakutat Group equivalent)","KJyb",2980,203,880,913]
[null,"Schist of Nunatak Fiord","Kynf",2981,136,881,541]
[null,"Yakutat Group Greenstone","Kyxg",2985,2,1074,913]
[null,"Metamorphosed quartz diorite, granodiorite, and diorite","KJmqd",2990,206,793,918]
[null,"Jurassic sedimentary rocks, marine, undivided","Jsu",3000,206,305,862]
[null,"Marine volcaniclastic sandstone, conglomerate, and argillite","Jvs",3005,null,1164,382]
[null,"Ogotoruk Formation, Late Jurassic, Oxfordian-Tithonian","Jof",3007,null,1305,862]
[null,"Naknek Formation","Jn",3010,null,306,862]
[null,"Naknek Formation, Pomeroy Arkose member (Jn (part), IL002; Jnp, IL006: IL007; KN005; SV004)","Jnp",3011,203,307,862]
[null,"Naknek Formation -- Northeast Creek Sandstone Member  (Jnn, AF008; CG004; IL006; IL007; KN005; KR002; KR004; MK004; MK005; NK004; PM002; SW002; SW004; UG004; Jns, UG002; JNss, SV004)","Jnn",3012,null,308,862]
[null,"Naknek Formation -- Snug Harbor Siltstone Member  (Jns, AF002; AF008; CG004; IL006; IL007; KN005; PM002; KR004; MK004; MK005; SV004; SW002; SW004; UG004; Jnst, KR002; UG002; UG004)","Jns",3013,null,309,862]
[null,"Naknek Formation -- Indecision Creek Sandstone Member (Jni, AF002; CG004; IL006; KR004; MK004; MK005; PM002; SW002; SW004; UG004)","Jni",3014,null,310,862]
[null,"Naknek Formation -- Katolinat Conglomerate Member (Jnk, MK005; UG004)","Jnk",3015,null,311,862]
[null,"Naknek Formation -- Chisik Conglomerate Member (Jnc, CG004; IL006; IL007; KN005; KR002; KR004; MK005; UG002; UG004)","Jnc",3016,null,312,862]
[null,"Naknek Formation -- undivided Northeast Creek Sandstone Member and Chisik Conglomerate Member (Jnn, CG004; UG004)","Jnnc",3017,null,313,862]
[null,"Naknek Formation -- undivided Indecision Creek Sandstone Member and Snug Harbor Siltstone Member (Jni, CG004; UG004)","Jnis",3018,null,314,862]
[null,"Shelikof Formation (Jss, Sandstone member, Jsst, Siltstone member, and Jsc, Conglomerate member, all on I-1685 now abandoned) [Shelikof Fm. is equivalent to the upper part of the Chinitna Fm. (Pavelof Siltstone Member)]","Js",3020,null,315,793]
[null,"Chinitna Formation","Jc",3025,null,1116,793]
[null,"Chinitna Formation, Tonnie Siltstone Member","Jc",3030,null,316,793]
[null,"Bug Creek, undivided.  Several cycles of shale and shelf sandstone in northern Yukon, fining generally to the northwest, and including equivalent generally fine clastic strata in central Yukon.","Jb",3040,null,699,793]
[null,"Bug Creek Group, succession of alternating coarse and fine clastic formations","Jb",3042,null,700,793]
[null,"Kotsina Conglomerate, Middle and/or Late Jurassic?","Jkt",3110,136,317,793]
[null,"Unnamed marine sedimentary rocks, sandstone, siltstone, mudstone","Juc",3120,206,318,862]
[null,"Marine arkosic sandstone and argillite, Togiak terrane","Ja",3130,136,319,862]
[null,"Chinitna Formation and Tuxedni Group, undivided","Jtxc",3140,206,320,793]
[null,"Graywacke of Kulukak Bay (Weary Graywacke)","Jkw",3150,136,758,793]
[null,"Turbidites of Metervik Bay, subdividion of graywacke of Kulukak Bay (Weary Graywacke)","Jkmb",3151,206,1156,793]
[null,"Volcaniclastic turbidites of Togiak Bay - Goodnews terrane","Jvt",3152,null,1158,772]
[null,"Tuxedni Group, undivided","Jtx",3180,null,321,793]
[null,"Tuxedni Group, Bowser Formation","Jtb",3181,null,1109,793]
[null,"Tuxedni Group, Twist Creek Siltstone","Jtt",3182,null,1110,793]
[null,"Tuxedni Group, Cynthia Falls Sandstone","Jtc",3183,null,1111,793]
[null,"Tuxedni Group, Fritz Creek Siltstone","Jtf",3184,null,1112,793]
[null,"Tuxedni Group, Gaikema Sandstone","Jtg",3185,null,1113,793]
[null,"Tuxedni Group, Red Glacier Formation","Jtrg",3186,null,1114,793]
[null,"Kialagvik Formation [Kialagvik Fm. is similar to the lower upper part of the Tuxedni Group]","Jk",3190,null,322,793]
[null,"Laberge Group, arkosic sandstone and minor shale with resistant heterolithic pebble and boulder conglomerate; recessive, thin bedded, silty shale","Jl",3195,131,702,793]
[null,"Tatina River volcanics, Upper member, phosphatic shale and volcaniclastic sandstone","JTrps",3210,null,323,793]
[null,"Micaceous, fine-grained black graywacke, siltstone, and slate, and gritty limestone.","Jms",3220,203,1105,793]
[null,"Volcaniclastic turbidites","Jvt",3230,131,1136,944]
[null,"Talkeetna Formation [Listed as sedimentary rock unit above; varies, essentially volcanic in Cook Inlet region, sedimentary on Alaska Peninsula. Thought in part to be Late Triassic.]","Jtk",3250,null,324,511]
[null,"Talkeetna Formation, Horn Mountain Tuff member","Jtkh",3251,206,994,511]
[null,"Talkeetna Formation, Portage Creek Agglomerate member","Jtkp",3252,136,995,511]
[null,"Talkeetna Formation, Marsh Creek Breccia member","Jtkm",3253,131,996,511]
[null,"Volcanic and sedimentary rocks, possible Talkeetna equivalent","Jlvs",3254,null,1166,400]
[null,"Coarse volcaniclastic sedimentary rocks","JTrcv",3255,null,1157,281]
[null,"Phyllite and chert, possible Talkeetna stratigraphic equivalent [Compare with 3850]","JTrp",3260,null,325,511]
[null,"Pogibshi Formation of Kelley (1980)","JPp",3265,null,1201,281]
[null,"Strangle Woman Creek sequence, undivided","JMsu",3270,206,1094,256]
[null,"Strangle Woman Creek sequence, quartzite and shale","Jqs",3271,206,1095,944]
[null,"Strangle Woman Creek sequence, quartzite, shale, and sandstone","JMqs",3272,136,1096,944]
[null,"Younger strata of the Porcupine River sequence, undivided","JMpu",3280,null,1097,281]
[null,"Laminated tuffs and associated rocks","Jlt",3310,null,1159,842]
[null,"Ultramafic rocks including layered quartz gabbro Lumped units 3345, 3405, 3490, 3491, 3495, 3540, 3545","Jmu",3340,null,326,826]
[null,"Trondhjemite","Jtr",3380,203,327,258]
[null,"Alkalic gabbro","Jmu",3390,null,328,826]
[null,"Alaska-Aleutian Range batholith, undifferentiated","Ji",3400,null,329,258]
[null,"Granite of Alaska-Aleutian Range batholith","Jgr",3401,null,330,258]
[null,"Granodiorite of Alaska-Aleutian Range batholith","Jgd",3402,206,331,275]
[null,"Quartz diorite of Alaska-Aleutian Range batholith and Chitina Valley batholith, quartz monzodiorite, quartz diorite, tonalite, and granodiorite","Jqd",3403,136,332,258]
[null,"Quartz diorite and tonalite","Jqt",3404,131,333,258]
[null,"Diorite and Gabbro of Alaska-Aleutian Range batholith","Jdg",3405,null,334,258]
[null,"Largely gabbroic rocks, may include minor ultramafic or dioritic rocks","Jgb",3406,null,1122,409]
[null,"Largely gabbroic rocks, may include minor ultramafic or dioritic rocks, associated with Alaska-Aleutian Range batholith","Jgaa",3407,null,1244,409]
[null,"Bokan Mountain peralkaline granite and syenite","Jpg",3410,136,898,258]
["2010-03-17","Intermediate plutonic rocks, Northern Alaska","Jgi",3415,null,1336,258]
[null,"Lamprohyre and maifc dikes associated with Iliamna Volcano, thought to be Jurassic","Jla",3420,null,1030,258]
[null,"Andesitic and basaltic flows, flow breccias and epiclastic marine rocks; younger than Talkeetna","Jvab",3450,203,335,511]
[null,"Middle Jurassic interbedded volcanic and sedimentary rocks","Jmv",3451,null,1161,400]
[null,"Igneous complex of Siniktanneyak Mountain, basalt at highest stratigraphic level.  Includes pillow breccia, part of ophiolite.","Jsb",3460,2,1039,511]
[null,"Spruce Creek tonalite, Kugruk Fault Zone","Jsct",3470,21,1283,258]
[null,"Gabbronorite and other mafic and ultramafic rocks, Middle and Early Jurassic of Hidden terrane (Chugach Mountains)","Jmu",3490,null,336,826]
[null,"Diorite of southeast Alaska","Jtw",3491,2,1242,258]
[null,"Ultramafic and mafic rocks, Middle to Early Jurassic","Jmu",3495,null,337,826]
[null,"Cumulate ultramafic rocks","Jtu",3496,null,338,705]
[null,"Harzburgite tectonite","Jtu",3497,null,339,705]
[null,"Ultramafic and mafic rocks, Middle to Early Jurassic; Dishna River mafic and ultramafic rocks","Jtu",3498,null,340,705]
[null,"Nordenskiold Dacite","Jnd",3505,203,704,258]
[null,"Granodiorite of Hagemeister Island, early Jurassic age","Jlgd",3510,null,1160,258]
[null,"Early Jurassic granite and granodiorite of Hidden terrane (Chugach Mountains)","Jetr",3520,203,1264,379]
[null,"Early Jurassic quartz diorite and tonalite of Hidden terrane (Chugach Mountains)","Jeqt",3525,206,1265,379]
[null,"Early Jurassic mafic and intermediate plutonic rocks of Hidden terrane (Chugach Mountains)","Jemi",3530,136,1266,379]
[null,"Hornblende gabbro and leucogabbro (layered)","Jmu",3540,null,341,826]
[null,"Ultramafic rocks, Early Jurassic or older","Jmu",3545,null,342,826]
[null,"Granodiorite of Taylor Mountain batholith and related(?) rocks","JTrg",3550,136,343,258]
[null,"Hornblende syenite porphyry","Jsy",3555,136,344,258]
[null,"Metamorphic and plutonic rocks, undifferentiated, Jurassic,","Jpmu",3600,null,345,990]
[null,"Schist of Kodiak Island, = Raspberry Schist of Roeske and others (1989).  Equivalent to Seldovia Schist and Schist of Iceberg Lake in Cook Inlet Region and Schist of Liberty Creek,","Jsch",3610,null,346,443]
[null,"Texas Creek granodiorite (metamorphosed)","Jmgd",3620,null,805,824]
[null,"Migmatite border zone of granodiorite","Jpmu",3621,null,347,990]
[null,"Bug Creek Group, Lower Schist: dark grey argillite, slate, and phyllite, commonly graphitic, thin-bedded dark grey quartzite, platy to phyllitic quartzite; minor phyllite and limy quartzite","Jbs",3640,null,701,990]
[null,"Kingak Shale, Shublik Formation, and Karen Creek Sandstone, undivided","JTru",3810,206,1007,961]
[null,"McCarthy Formation, argillite and impure limestone (Early Jurassic-Late Triassic)","JTrmc",3820,null,349,980]
[null,"Limestone, shale, and chert (Early Jurassic(?)-Late Triassic (Norian)); newly recognized unit in Taylor Mtns.","JTrmc",3821,null,350,980]
[null,"Red and brown sedimentary rocks and basalt (Early Jurassic-Late Triassic)","JTrsu",3830,203,351,980]
[null,"Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?)","JTrct",3850,null,352,844]
[null,"Crystal tuff, argillite, chert, graywacke, and limestone, deep marine, Late Jurassic to Late Triassic(?), thought largely Triassic","JTrta",3851,null,353,717]
[null,"Gabbro, associated basalt and andesite(?), minor diorite and diabase, and undiffereniated mafic- and intermediate composition igneous rocks.","JTrgb",3860,121,693,258]
["2010-03-30","Gabbro, diabase, basalt, microgabbro, and minor diorite; dark-grayish-green to dark-gray.  Brooks Range","KTrgb",3870,121,1338,717]
["2010-03-21","Basalt or basic igneous rocks of Brooks Range ophiolite","JTrob",3880,136,1337,717]
[null,"Probable dismembered altered ophiolite complex consisting of mafic flows, dikes, volcaniclastic rocks, and gabbro, subdivided:","JTro",3890,null,1129,717]
[null,"Pillow basalt","JTropb",3891,null,1130,705]
[null,"Trondhjemite","JTrot",3892,null,1131,615]
[null,"Diabasic intrusive rocks","JTrod",3893,203,1132,615]
[null,"Pyroxene gabbro","JTropg",3894,null,1133,717]
[null,"Serpentinized ultramafic rocks","JTrosu",3895,null,1134,705]
[null,"Diorite","JTrdi",3900,136,854,258]
[null,"Calcareous schist and phyllite","JTrcs",3950,131,1135,991]
[null,"Metabasaltic schist","TrPrmb",3990,2,1137,708]
[null,"Volcaniclastic glaucophane-hornblende-epidote schist","TrPvs",3991,2,1138,717]
[null,"Sedimentary rocks, undivided","Trsu",4000,203,1011,844]
[null,"Black shale and chert, Triassic","Trsc",4010,null,1216,941]
[null,"Triassic limestone, shale, and chert","Trlc",4011,143,759,844]
[null,"Fossiliferous limestone from the northeast Taylor Mountains quadrangle","Trlt",4012,136,1043,961]
[null,"Shublik Formation, black shale, sandstone, and silty limestone.  Possibly equivalent to lower Glenn Shale [4034]","Trsf",4015,null,1093,941]
[null,"Karen Creek Sandstone and Shublik Formation, undivided","Trks",4016,null,1182,844]
[null,"Shublik and Siksikpuk Formations, undivided","TrPss",4017,131,1189,937]
[null,"Port Graham Formation of Kelley (1980)","Trpg",4019,null,1202,961]
[null,"Kamishak Formation [includes some volcanic rocks]","Trk",4020,131,354,980]
[null,"Limestone and basalt sequence, Late Triassic, Norian","Trlb",4021,136,355,844]
[null,"Ursus Member, Kamishak Formation","Trku",4022,null,1046,980]
[null,"Middle Member, Kamishak Formation","Trkm",4023,null,1047,844]
[null,"Bruin Limestone Member, Kamishak Formation","Trkb",4024,null,1048,980]
[null,"Karen Creek Sandstone","Trkc",4025,203,1002,961]
[null,"Upper Triassic limestone, might not be Chitistone -- Nizina equivalent","Trl",4029,null,944,980]
[null,"Chitistone and Nizina Limestone units, undivided","JTrlm",4030,143,356,980]
[null,"Limestone and marble","JTrlm",4031,143,357,980]
[null,"Spiculite and sandy limestone, Late Triassic, Norian (Trs, MD002) [Overprint symbol 708]","Trsl",4032,136,358,980]
[null,"Calcareous sedimentary rocks, Late Triassic, middle(?) Norian and Late Karnian","Trcs",4033,null,359,941]
[null,"Glenn Shale, lower unit, Late and Middle Triassic.  Possibly equivalent to Shublik Formation [4015]","Trgl",4034,null,360,941]
[null,"Limestone, chert and some greenstone","Trvs",4035,null,361,892]
[null,"Conglomerate and volcanic sandstone, Late Triassic, Norian","Trcg",4050,203,362,941]
[null,"Synorogenic clastic rocks","Trsc",4055,203,705,980]
[null,"Red beds, Late Triassic","Trr",4060,203,363,980]
[null,"Calcareous phosphatic shale and limestone [probably correlative with lower part of Glenn Shale]","Trgl",4080,null,364,941]
[null,"Otuk Formation, Triassic","Trcs",4110,null,365,441]
[null,"Siksikpuk Formation, Etivluk Group, chert and shale","TrPask",4120,null,961,836]
[null,"Imnaitchiak Chert, Etivluk Group equals chert of Siksikpuk Formation","TrPaic",4121,512,1203,836]
[null,"Sadlerochit Group and Siksikpuk Formation?, undifferentiated (TrPss, TrPss?, AC002)","TrPass",4125,542,1330,836]
[null,"Conglomerate and shale, Middle Triassic","Trcgs",4130,206,967,941]
[null,"Stikine terrane limestone, sandy limestone, and mudstone","Trls",4140,136,899,980]
[null,"Shuyak Formation, sedimentary member","Trss",4150,null,366,980]
[null,"Sadlerochit Group, undivided","TrPsg",4160,206,1003,892]
[null,"Sadlerochit Group, Ivishak Formation","Tri",4161,136,1004,892]
[null,"Early Trissic limestone of Chulitna region","Trcl",4170,143,1252,892]
[null,"Middle Triassic or older red-colored tuff, basalt, graywacke, and conglomerate","Trvt",4175,203,1253,941]
[null,"Rhyolitic lava and breccia, tuff, chert, and shale, in Kantishna quadrangle, unit eliminated on newer TN003 compilation","Trvs",4205,null,367,892]
[null,"Mafic igneous rocks, Triassic(?)","Trn",4210,null,368,439]
[null,"Tatina River Volcanics, lower members, pillow basalt and gabbro [see 5450, 2890, all thought to be same unit]","JTrtv",4215,203,369,709]
[null,"Upper Triassic volcanic rocks","Trv",4230,null,370,439]
[null,"Povas unit of Yukon, andesitic basalt flows, breccia, tuff, sandstone and argillite; local dacitic breccia and tuff with minor limestone; greenschist, chlorite schist, chlorite-augite-feldspar gneiss, amphibolite","Trp",4235,121,1301,668]
[null,"Mafic dikes, sills, and plugs intruding Shuyak Formation","Trvm",4240,null,372,379]
[null,"Shuyak Formation, volcanic member","Trsv",4250,null,373,668]
[null,"Afognak pluton, U-Pb age indicates is probably Triassic","Trqd",4310,203,374,7]
[null,"Stikine Suite, Tally Ho Leucogabbro, Little River Batholith, Friday Creek diorite.  Coarse-grained, foliated, gabbroic hornblende orthogneiss; hornblende-biotite granite and granodiorite; foliated, fine- to medium-grained hornblende quartz diorite to dio","Trsg",4315,203,706,705]
[null,"Gabbro, diabase, and metagabbro, Late Triassic(?)","Trgb",4320,null,375,826]
[null,"Cumulate mafic and ultramafic rocks, Late Triassic(?) [Nikolai related]","Trgb",4321,null,376,826]
[null,"Stikine terrane hornblende diorite and gabbro","Trsgb",4325,null,946,826]
[null,"Stikine terrane hornblende ultramafic rocks","Trsum",4326,null,947,826]
[null,"Carbonatite","Trc",4340,null,377,708]
[null,"Quartz diorite and lesser granodiorite and diorite, Alexander","Tradi",4350,203,855,705]
[null,"Schistose metasedimentary and metavolcanic rocks, Late Triassic","Trnm",4410,null,378,709]
[null,"Biotite-hornblende syenite-monzonite gniess","Trmg",4415,203,379,905]
[null,"Nikolai Greenstone, Late and/or Middle Triassic","Trn",4420,null,380,439]
[null,"Nikolai Greenstone - subaerial basalt flows member, Late Triassic","Trn",4421,null,381,439]
[null,"Nikolai Greenstone, Late and/or Middle Triassic, pillow basalt member","Trn",4422,null,382,439]
[null,"Basalt, diabase, and subordinate sedimentary rocks, Late Triassic, Karnian and Norian","Trn?",4423,null,383,439]
[null,"Cottonwood Bay Greenstone","Trcb",4425,null,384,439]
[null,"Basaltic metavolcanic rocks, Late Triassic,","Trn",4430,null,385,439]
[null,"Metavolcanic, metavolcaniclastic, and subordinate metasedimentary rocks, Late Triassic, late Norian,","Trnm",4440,null,386,709]
[null,"Metabasalt and slate, Late Triassic","Trnm",4450,null,387,709]
[null,"Galena Suite, massive, medium-grained hornblende diorite and gabbro sills; serpentinized greenstone sills","Trg",4460,null,707,439]
[null,"Hyd Group, undivided","Trhg",4470,null,818,424]
[null,"Hyd Group, including Chapin Peak Formation marine volcanic rocks and subordinate calcareous sedimentary rocks","Trhv",4471,2,814,424]
[null,"Hyd Group breccia","Trhb",4472,136,815,424]
[null,"Hyd Group limestone and dolomite","Trhl",4473,143,816,424]
[null,"Hyd Group felsic volcanic rocks, includes Puppets Formation on Gravina Island","Trhf",4474,203,817,424]
[null,"Hyd Group argillite","Trha",4475,null,831,424]
[null,"Stuhini Group, pillow basalt, volcanic sandstone and mudstone","Trsb",4480,136,1023,709]
[null,"Stuhini Group, tuffaceous sandstone, volcanic wacke, tuff, mudstone, and minor conglomerate","Trmss",4481,131,1024,709]
[null,"Mafic metavolcanic rocks, metamorphosed intermediate to mafic volcanic flows, pillowed flows, tuff, and agglomerate, with subordinate pelitic and semipelitic flysch. (Alava)","Trmv",4500,206,812,709]
[null,"Perseverance Slate and related Alava slate and phyllite","Trclt",4501,null,832,709]
[null,"Pinnacle Peak phyllite and phyllite of Rodman Bay","Trpp",4510,203,900,709]
[null,"Volcaniclastic rocks of Rodman Bay and sedimentary and volcanic rocks of Nakwasina Sound","Trvs",4511,136,941,892]
[null,"Marble of Nakwasina Sound and limestone blocks in Freeburn Assemblage","Trml",4512,143,901,980]
[null,"Whitestripe Marble","Trw",4515,143,1073,980]
[null,"Whitestripe Marble?","Trw?",4516,143,1079,980]
[null,"Orthogniess","Trgn",4520,203,856,905]
[null,"Marble","Trmb",4521,143,1065,905]
[null,"Kelp Bay Group, undivided","Trkg",4550,136,1025,913]
[null,"Cretaceous through Triassic sedimentary rocks, undivided","Mzsu",4700,206,1306,853]
[null,"Togiak-Tikchik Complex, formerly Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks","MzPzt",4710,null,388,853]
[null,"Lava flows in undivided Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks","MzPztl",4711,206,765,853]
[null,"Limestone in undivided Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks","TrPls",4712,206,766,853]
[null,"Volcanic breccia in undivided Gemuk Group, chiefly siltstone and lesser chert and volcanic rocks","MzPztv",4713,136,767,853]
[null,"Christian River and Porcupine River sequences","JPc",4720,206,997,853]
[null,"Arctic Foothills Assemblage","KMaf",4725,131,1185,853]
[null,"Minto unit, Wilber Creek flysch and Wolverine quartzite, undivided","KJmu",4730,null,1143,982]
["2010-11-10","Shale and sandstone, may correspond in part to Christian River and Porcupine River sequences","JPc",4740,null,1360,842]
[null,"Intrusive rocks, quartz diorite and diorite","Mzi",4800,null,389,259]
[null,"Basaltic rocks","Ktrv",4870,206,390,709]
[null,"Mafic rocks, diorite and gabbro","Mzm",4880,null,391,439]
[null,"Ultramafic and associated rocks","Mzum",4890,null,392,807]
[null,"Ultramafic and mafic igneous rocks along Broxson Gulch thrust","Mzum",4891,null,393,807]
[null,"Metasedimentary and metavolcanic rocks, (Correlated with Kakhonak Complex)","JPzk",4905,null,394,892]
[null,"Windy, quartz-chlorite-sericite schist, epidote-actinolite greenschist, quartzite, slate, quartz-mica schist, limestone","KPzw",4910,21,708,824]
[null,"Metavolcanic and metasedimentary rocks, (Correlated with Kakhonak Complex)","JPzk",4920,null,395,892]
[null,"Semischist","Mzs",4930,null,1297,892]
[null,"Quartzofeldspathic banded biotite gneiss and hornblende gneiss","Mzgn",4931,null,1298,824]
[null,"Tikchik terrane melange","Mzm",4950,21,1118,913]
[null,"Igneous and sedimentary rocks of the Maiyumerak Mountains","MzDm",4951,21,1241,812]
[null,"Metamorphosed mafic rocks, metatonalite and serpentinite, Kugruk Fault Zone","MzPzmk",4990,21,1282,812]
[null,"Etivluk Group, undivided:  Includes Siksikpuk, Otuk Formations and underlying Immaitchiak Chert and consists of maroon, red, green, gray, black, and variegated chert and siliceous argillite, minor maroon calcareous siltstone and argillite, and rare maroo","Pzeg",5000,131,396,941]
[null,"Rocks of the Kivivik Creek sequence","JDk",5001,null,1229,941]
[null,"Sandstone, shale, argillaceous limestone, limestone, dolostone, mudstone, chert and siltstone in north-central Wiseman quadrangle.  The unit conformably overlies the Kanayut Conglomerate of the Endicott Group. Consists of Kayak Shale of the Endicott Grou","JCs",5003,null,1238,892]
[null,"Sedimentary rocks:  Includes: Shublik and Otuk Formations - Black shale, siltstone, limestone, and black chert; Sadlerochit Group - black shale, and bluff calcareous siltstone; Siksikpuk Formation - black, red, and green shale and siltstone; buff calcare","TrCs",5004,null,397,892]
[null,"Carbonaceous shale, mudstone, and graywacke; subordinate limestone, chert, conglomerate, and mafic volcanic rocks; minor felsic volcanic rocks; and the metamorphosed and deformed equivalents","KPs",5010,206,1139,941]
[null,"Shale, mudstone, graywacke, andesitic or basaltic rocks, subordinate chert and carbonate rocks","KPsv",5011,136,1153,941]
[null,"Dark gray, phyllitic, siliceous to carbonaceous argillite and shale, subordinate chert-rich conglomerate, chert, volcaniclastic rocks, highly calcareous argillite or limestone, and minor intrusive rocks.","TrPs",5012,206,398,941]
[null,"Formerly Rampart Group, sedimentary rocks, now considered Tozitna -- Triassic to Mississippian","TrMts",5020,null,399,615]
[null,"Rampart Group, sedimentary rocks, Triassic to Mississippian","TrMis",5021,null,400,615]
[null,"Low-grade metasedimentary rocks of the Seventymile/Slide Mountain terrane","MzPzs",5022,null,1092,972]
[null,"Chert and argillite, Goodnews terrane","MzPzc",5026,131,401,972]
[null,"Volcanic and sedimentary rocks of Talkeetna superterrane, Triassic and Paleozoic [Only in cross-sections]","TrPzvs",5030,null,402,941]
[null,"Lower unit Glenn shale and Tahkandit Limestone, undivided","TrPgt",5035,143,403,941]
[null,"Sedimentary rocks of the Tatonduk area, undivided.  Ranges through entire Paleozoic, diverse lithologies, many formal units lumped","Pzta",5036,null,1142,972]
[null,"Flysch-like sedimentary rocks","TrPas",5040,131,404,615]
[null,"Turbiditic volcaniclastic sandstone and argillite, Goodnews terrane","MzPzv",5045,131,405,615]
[null,"Arkosic sandstone and slate, Goodnews terrane","MzPzs",5050,203,406,615]
[null,"Marine sandstone, shale, limestone and conglomerate","Pcs",5060,206,407,615]
[null,"White-weathering chert or silicified limestone","MzPzct",5070,206,964,972]
[null,"Melange and argillaceous melange, Goodnews terrane","MzPzm",5090,131,408,913]
[null,"Andesitic or basaltic flows and locally fragmental rocks, subordinate clastic strata and carbonate, and the metamorphosed and deformed equivalents","KPv",5105,206,1140,980]
[null,"Chulitna Sequence -- volcanic and sedimentary rocks, Early Triassic to late Paleozoic","TrDv",5110,206,409,980]
[null,"Chert, volcanic rocks, metasandstone, and limestone","TrMica",5111,null,410,615]
[null,"Black slate, chert, red and green argillite","TrMca",5112,null,411,892]
[null,"Mafic and ultramafic rocks, undivided (Jurassic? and/or Paleozoic?)","JPztm",5113,null,412,708]
[null,"Volcanic rocks, unknown age","MzPzi",5120,null,413,599]
[null,"Rampart Group, igneous rocks, Triassic to Mississippian","JTrtmu",5130,131,414,708]
[null,"Mafic and sedimentary rocks; pillow basalt, chert, and minor argillite","TrMtsu",5131,null,415,615]
[null,"Mafic, ultramafic, and sedimentary rocks of the Tozitna sequence, undivided (Jurassic to Mississippian)","JMtu",5133,null,417,717]
[null,"Rhyolite and dacite of Tozitna terrane","JMvr",5135,2,1052,258]
[null,"Basalt and diabase, Permian to Jurassic","JMab",5140,null,418,717]
[null,"Melange between Angayucham-Tozitna and Arctic Alaska and Ruby terranes","MzPzl",5145,null,769,708]
[null,"Ultramafic rocks, Permian to Jurassic","Jaum",5150,null,419,708]
[null,"Undivided intrusive rocks, Mesozoic or Paleozoic","MzPzi",5160,null,420,599]
[null,"Granodiorite of Rainbow Mountain","MzPzg",5170,null,421,599]
[null,"Diorite","MzPzi",5175,null,422,599]
[null,"Gabbro and quartz diorite, Mesozoic and/or Paleozoic","MzPzi",5180,null,423,599]
[null,"Undivided dunite and serpentinite, Mesozoic or Paleozoic","MzZum",5190,null,424,817]
[null,"Metamorphic rocks, undivided","MzPzu",5200,null,425,991]
[null,"Fine- to medium-grained mylonitic metasedimentary rocks, calc-schist, marble, quartz-mica schist","Trcs",5201,null,426,941]
[null,"Schist and amphibolite, Late Cretaceous or older","Mzsa",5205,206,429,991]
[null,"Quartz-mica schist, calc-schist, and amphibolite, Late Jurassic or older","Mzpca",5206,136,430,991]
[null,"Schist, quartzite, and amphibolite, Triassic(?) [See also MH002 units mig and mgsh.  Lithologically similar rocks on strike in Healy quad have Penn to Trias conodonts, see unit Trcs?] {Mzmm}","Trcs",5207,null,431,941]
[null,"Raven Creek Hill unit, metasedimentary gneiss, mica schist, phyllite..., Mesozoic or Paleozoic","TPza",5208,136,432,941]
[null,"Black argillite and other low-grade metasedimentary rocks along the Tintina Fault zone","MzPza",5209,203,1088,824]
[null,"Argillite and metagraywacke, Late Jurassic or older","Mzpca",5210,136,433,991]
[null,"Argillite and quartzite.  Deleted unit in revision.","MzPzaq",5211,null,434,991]
[null,"Silicified tuff, white, light-tan, light-gray silica rock","MzPzt",5212,121,689,599]
[null,"Metasedimentary, metavolcanic, and sedimentary rocks of the Doonerak area (Other maps show as NSA 5565 and 6685)","TrPzd",5213,null,1146,941]
[null,"Phyllite, Late Jurassic or older  [see Pzp, #5540]","Mzpca",5215,136,435,991]
[null,"Phyllite, amphibolite, greenstone, and diorite, Mesozoic or Paleozoic Lumped with Vrain","KJvr?",5216,131,436,960]
[null,"Chloritic phyllite, Goodnews terrane","MzPzp",5217,null,437,972]
[null,"Kakhonak Complex (Jurassic, Triassic and older?)","JPk",5220,null,438,892]
[null,"Metachert and phyllitic quartzite, Goodnews terrane","MzPzm",5225,203,439,972]
[null,"Banded dark-green, gray, and red eclogite and banded amphibolite.","JPe",5230,null,440,388]
[null,"Melange-like assemblage of mafic volcanic rocks, chert, mudstone, argillite, graywacke and limestone","KMu",5235,null,1121,439]
[null,"Metabasalt and minor metachert","Jgs",5239,null,1163,379]
[null,"Metabasalt and minor metachert","MzPzb",5240,null,441,439]
[null,"Metabasite, Arctic Alaska terrane","MzPzm",5241,null,739,905]
[null,"Metabasite, Ruby terrane","MzPzm",5242,null,890,905]
[null,"Metabasite, Seward terrane","MzPzm",5243,null,891,905]
[null,"Stikine, recrystallized volcanic and sedimentary rocks","TrPzvs",5244,136,795,905]
[null,"Uranatina Metaplutonic Complex, Jurassic(?), Layered quartz gabbro; Amphibolite and orthogneiss","JPaur",5245,206,442,905]
[null,"Metamorphosed igneous rocks, post-Carboniferous","MzPmi",5250,null,443,905]
["2010-04-27","Porcupine slate of southeast Alaska (uPzs, SK004)","TrDps",5255,null,1342,712]
[null,"Schist of lower grade metavolcanic and metasedimentary rocks unit","MzPzq",5260,136,444,972]
[null,"Greenschist of lower grade metavolcanic and metasedimentary rocks unit","MzPzq",5261,136,1064,972]
[null,"Mainly regionally metamorphosed or otherwise recrystallized or altered diorite, quartz diorite, and gabbro","MzPzmi",5265,131,807,905]
[null,"Alava sequence, undivided Permian and Triassic; correlated with the Perserverance Group (Middle and Late Triassic metased), Gastineau Group (Permian metavolcanic), and Unnamed Permian and/or older strata (Phyllite) of Gehrels and others (1992)","TrPzms",5270,null,794,892]
[null,"Alava sequence, metasedimentary rocks, correlated with the Perserverance Group (Middle and Late Triassic metased), Gastineau Group (Permian metavolcanic), and Unnamed Permian and/or older strata (Phyllite) of Gehrels and others (1992)","TrPsa",5271,203,845,892]
[null,"Alava sequence, metavolcanic rocks, derived primarily from submarine andesitic or basaltic lava flows, tuff, and agglomerate, correlated with the Perserverance Group (Middle and Late Triassic metased), Gastineau Group (Permian metavolcanic), and Unnamed","TrPv",5272,null,808,905]
[null,"Metamorphosed granitic plutonic rocks (orthogneiss)","MzZog",5275,null,796,599]
[null,"Paleozoic orthogneiss","MzZog",5276,null,948,466]
[null,"Ophiolitic metamorphosed mafic rocks","MzPzo",5280,null,445,717]
[null,"Metamorphosed mafic igneous rocks","Pzrmi",5285,null,446,905]
[null,"Serpentinite, Mesozoic and/or Paleozoic","MzZum",5290,null,447,817]
[null,"Metabasic and metafelsic volcanic rocks, undifferentiated.","MzZfm",5295,203,1086,923]
[null,"Dillinger stratigraphic sequence, undivided; sedimentary rocks of Dillinger River, lime mudstone and shale, etc, Paleozoic","DCd",5310,143,449,821]
[null,"Massively bedded limestone, dolomite, and schist, Paleozoic, Seward terrane","Pzld",5320,null,450,863]
[null,"Undivided limestone and schist, Paleozoic","Pzls",5321,203,451,863]
[null,"Limestone and quartz-mica schist, Paleozoic, Seward terrane","Pzls2",5322,206,452,863]
[null,"Skolai Group undivided; also Skolai Group, greenstone, Early Permian to Middle Pennsylvanian","PPas",5325,2,957,863]
[null,"Limestone and chert","Pzlc",5330,143,453,805]
[null,"Undivided sedimentary rocks of the Venetie terrane, Permian to Devonian?","PDs",5335,206,1151,245]
[null,"Carbonates, early Paleozoic","Pzrm",5340,143,454,712]
[null,"Limestone?, Permian-Pennsylvanian?","PPl",5341,null,455,210]
[null,"Quartzite and argillite, Late Paleozoic","Pzqa",5350,206,456,615]
[null,"Chert and argillite, Late Paleozoic","Pzca",5355,136,457,615]
[null,"Clastic rocks, undivided, Paleozoic(?)","Pzsu",5360,136,458,513]
[null,"Schistose sandstone, Paleozoic(?)","Pzss",5361,136,1099,513]
[null,"Mystic and Dillinger stratigraphic sequences, undivided (Triassic to Ordovician), undivided sedimentary rocks, typically flysoid","JCmd",5370,21,459,513]
[null,"Mystic stratigraphic sequence, undivided (Triassic to Devonian)","JDm",5375,null,460,513]
[null,"Lower Paleozoic black chert.  Derived from 1969-1970 Condon and Hoare field notes","Pzec",5380,131,1028,210]
[null,"Volcanic and sedimentary rocks, middle or late Paleozoic","Pzvs",5410,203,461,709]
[null,"Diorite","MzPzi",5440,null,462,599]
[null,"Pillow basalt, middle or late Paleozoic [see 2890, 4215, all thought to be same unit]","JTrtv",5450,203,463,709]
[null,"Gabbro and leucogabbro, Late Paleozoic, Permian to Pennsylvanian","Pagb",5460,121,464,19]
[null,"Ultramafic and mafic rocks and greenstone","Pzug",5470,null,465,208]
[null,"Eclogite see Chatanika unit [5510], which includes eclogite in Livengood quad","Pze",5475,null,466,388]
[null,"Undivided Paleozoic metamorphic rocks:  quartzite, semischist, and amphibolite","Pzkm",5500,143,467,388]
[null,"Chatanika unit, allochthonous garnet-bearing qtz-bio-mus schist and quartzite, Paleozoic","Pze",5510,null,468,388]
[null,"Metamorphosed sedimentary, volcanic, and intrusive rocks, undivided","Pzsqm",5515,136,806,388]
[null,"Metamorphosed volcanic rocks, Kah Shakes sequence","Pzmv",5516,136,885,642]
[null,"Reindeer Hills complex of altered carbonate rocks, schist and quartzite, and shallow intrusive rocks","MzPzr",5521,2,737,972]
[null,"Marble, Paleozoic","Dm",5525,143,469,712]
[null,"Marble, Paleozoic","Pzm",5526,143,811,712]
[null,"Greenschist and other metamorphic rocks, undivided","Pzgs",5540,203,1091,256]
[null,"Calcareous siltstone and sandstone and phyllite","TrMtqp",5542,131,470,615]
[null,"Phyllite, calcareous phyllite, and marble","PMpc",5545,131,471,615]
[null,"Meta-hornblende andesite, Late Paleozoic(?); Amphibolite and quartz diorite, Middle to Early Jurassic metamorphic age","JPam",5550,41,472,646]
[null,"Porcupine River sequence -- Argillite","Pzpr",5555,21,1100,824]
[null,"Phyllite of Arctic Alaska terrane","Pzp",5560,null,762,712]
[null,"Phyllite of Ruby terrane","Pzp",5561,null,893,712]
[null,"Metagraywacke of Arctic Alaska and Ruby terrane","Pzg",5565,206,763,712]
[null,"Carbonate rocks of phyllite belt","Pzpc",5570,143,1234,615]
[null,"Phyllite and argillite, Grantley Harbor Fault Zone","Pzpa",5575,null,1290,712]
[null,"Greenish-gray siliceous slate, quartzite, chert, and greenstone, Perm-Miss.","PDms",5600,null,473,939]
[null,"Cataclastic rocks, Totatlanika Schist","MDtm",5605,121,474,813]
[null,"Metamorphic and sedimentary rocks, black and greenish-gray siliceous slate, chert siltstone, debris flows, greenstone, Permian to Devonian(?)","PDms",5615,null,475,939]
[null,"Slana Spur Formation, marine calcareous and noncalcareous volcaniclastic rocks, Early Permian-Middle Penn.","Pat",5620,206,476,824]
[null,"Slana Spur Formation, calcareous volcaniclastic rocks, Early Permian-Middle Penn.","Pat",5621,206,477,824]
[null,"Metamorphosed Skolai Group","PPast",5625,null,478,824]
[null,"Siliceous metasedimentary and metavolcanic rocks","MzPzsv",5626,null,1299,892]
[null,"Undivided tectonized rocks (Melange?)","MzPzu",5627,null,1300,913]
[null,"Slana Spur Formation, volcaniclastic rocks, Early Permian-Middle Penn. [equivalent to part of Station Creek Fm.]","Pzv",5630,null,479,646]
[null,"Volcanic rocks, volcanic sandstone, cherty argillite, quartzite, and tuff","Pzvc",5635,null,480,642]
[null,"Windy terrane volcanic rocks","Pzv",5636,203,943,642]
[null,"Greenstone","JPzsgs",5640,null,481,615]
[null,"Greenstone","PPast",5641,null,482,824]
[null,"Nome Complex metagabbro and metasedimentary rocks","Pzng",5650,121,1279,805]
[null,"Nome Complex marble","Pznm",5651,143,1280,85]
[null,"Nome Complex dolostone, undivided","Pznd",5652,143,1281,85]
[null,"Keevy Peak Formation, schist, quartzite, and phyllite, early Paleozoic","Pzk",5660,null,483,923]
[null,"Keevy Peak Formation, schist, quartzite, and phyllite, early Paleozoic","Pzk?",5661,null,484,923]
[null,"Calcareous and phyllitic rocks","Pzkcp",5662,131,485,923]
[null,"Spruce Creek sequence of Kantishna Hills from Bundtzen thesis","Pzsc",5666,203,486,923]
[null,"Big Delta Gneiss dome","PzZyg",5670,null,487,466]
[null,"Phyllite","PzZp",5675,131,1027,923]
[null,"Paragneiss characterized by rusty brown weathering pelitic paragneiss and schist","PzZbg",5676,206,810,85]
[null,"Polymictic conglomerate in a schistose matrix","PzZbc",5677,136,848,85]
[null,"Metavolcanic hornblende schist and gniess","PzZhg",5678,131,849,85]
[null,"Marble and interbedded schist","PzZmb",5679,143,850,85]
[null,"Metamorphic complex of Gulkana River, amphibolite","PPast",5680,null,488,824]
[null,"Metavolcanic rocks of early Paleozoic age, derived primarily from submarine andesitic or basaltic lava flows, tuff, and agglomerate","Pza",5681,136,809,824]
[null,"Portland Peninsula gneiss and marble","Pzgm",5682,203,886,466]
[null,"Biotite schist and gneiss, with subordinate felsic to mafic metavolcanic rocks, conglomerate containing quartzite, volcanic rocks, and marble. Includes Port Houghton assemblage in Tracy Arm and Port Houghton areas","Pzbs",5683,131,956,466]
[null,"Four Winds Complex orthogniess","Pzog",5685,2,1071,466]
["2010-04-28","Four Winds Complex, undivided","Pzfw",5686,null,1344,186]
["2010-04-28","Four Winds Complex, metavolcanic rocks and metabasite","Pzfwv",5687,null,1345,186]
[null,"Sedimentary rocks, undivided, Permian.  Sandstone, siltstone, and quartzite [NOTE: may be equivalent to NSA 5715, Echooka Formation and 5735, Tahkandit Limestone]","Psu",5710,203,490,842]
[null,"Sadlerochit Group, Echooka Formation, undivided [NOTE: may be equivalent to NSA 5710, Permian sedimentary rocks in Charley River quadrangle and 5735, Tahkandit Limestone]","Pef",5715,203,1005,842]
[null,"Sadlerochit Group, Permian limestone, Joe Creek unit (TrPsl, TB003)","Psl",5716,206,1329,896]
[null,"Argillite and limestone","Pal",5720,null,857,842]
["2010-03-17","Shale and chert, Strangle Woman and Christian River sequences","Psc",5725,121,1335,842]
[null,"Unnamed Permian limestone","Pls",5730,null,491,210]
[null,"Tahkandit Limestone, massive bioclastic limestone [NOTE: may be equivalent to NSA 5710, Permian sedimentary rocks in Charley River quadrangle and 5715, Echooka Formation]","Ptl",5735,143,492,896]
[null,"Step Conglomerate, Permian, chert and quartzite clast pebble- and cobble conglomerate","Psc",5736,206,686,210]
[null,"Tahkandit Limestone, massive bioclastic limestone and Step Conglomerate, Permian, chert and quartzite clast pebble- and cobble conglomerate, undivided","Pstl",5737,121,871,210]
[null,"Argillite, sandstone, sandy limestone, and minor conglomerate","Ps",5740,121,493,842]
[null,"Graywacke, conglomerate, and mudstone, Permian(?)","Pcs",5745,206,494,615]
[null,"Permian volcaniclastic rocks","Pvs",5746,206,1162,615]
[null,"Hasen Creek Formation","Ph",5750,null,495,824]
[null,"Limestone of the Hasen Creek Formation","Phls",5755,null,496,210]
[null,"Limestone of the Eagle Creek Formation","Pels",5756,null,945,210]
[null,"Fantasque, grey to black chert in medium to very thick beds separated by thin beds of shale; grey sandstone and mudstone","Pf",5760,206,710,939]
[null,"Pybus Formation, limestone and dolostone","Pp",5765,136,833,939]
[null,"Halleck Formation calcareous siltstone to conglomerate","Phl",5766,143,836,939]
["2010-04-28","Sitth-gha-ee Peak Formation Limestone (Psl, SK010)","Psfl",5767,136,1343,939]
[null,"Permian(?) volcanic rocks (agglomerate) from Hanson (1957)","Pv",5810,null,497,464]
[null,"Greenstone and chert","JPzsgs",5830,21,498,615]
[null,"Shallow-level stocks, dikes, sills and small plutons, Early Permian?","Pmi",5860,null,499,19]
[null,"Monzonitic-granitic complex","Pmgi",5870,null,500,19]
[null,"Ahtell pluton","Pmgi",5871,null,950,19]
[null,"Syenite","PPasy",5875,203,838,208]
[null,"Diorite complex, diorite, granodiorite, and altered diabase and gabbronorite","PPad",5880,null,501,19]
[null,"Strelna Metamorphic complex, low- to medium-grade greenschist and amphibolite, Late Jurassic or older","PPast",5920,null,502,824]
[null,"Cannery Formation, metasedimentary and metavolcanic rocks, undivided","PDcvs",5930,131,839,939]
[null,"Cannery Formation metavolcanic and volcaniclastic rocks","PDcv",5931,206,1051,824]
[null,"Cannery Formation, carbonaceous facies, slate and black phyllite","PDcs",5932,203,916,939]
[null,"Cannery Formation, massive, light- to medium gray and black argillite and marble","PDcm",5934,143,917,939]
[null,"Sitth-gha-ee Peak Formation greenstone, greenschist, and phyllite","Psfv",5935,206,1070,842]
[null,"Sitth-gha-ee Peak Formation phyllite, slate, metagraywacke","Psfp",5936,null,1069,842]
[null,"Mankomen Group, undivided [equivalent stratigraphically to Skolai Group]","Pmg",5940,131,503,824]
[null,"Eagle Creek Formation, Early Permian, marine argillite and limestone, lower greenschist facies [equivalent to Hasen Creek Fm.]","Pe",5950,203,504,824]
[null,"Marble","Pm",5952,null,797,824]
[null,"Skolai Group, marble, Early Permian to Middle Pennsylvanian","JPzmb",5955,143,505,944]
[null,"Quartzite, phyllite, micaceous quartzite, marble, inferred Permian age","Pq",5960,null,506,615]
[null,"Metasiliciclastic rocks and minor carbonate rocks","PDs",5965,206,1087,245]
[null,"Klondike Schist, poorly understood assemblage of metamorphosed pelitic/volcanic rocks and minor marble.","Pks",5970,136,694,210]
[null,"Klondike Schist, marble and dolomite","Pksm",5971,143,695,210]
[null,"Serpentinized ultramafic","JPsu",5980,null,507,708]
[null,"Pennsylvanian, Mississippian, Devonian, light gray limestone","PDl",6000,143,508,745]
[null,"Sheep Creek Formation and correlative largely siliciclastic units of the Mystic stratigraphic sequence (Permian to Devonian); Conglomerate of Mount Dall, Middle Pennsylvanian","PDsc",6010,121,509,513]
[null,"Calico Bluff  Formation","PaMcb",6020,null,510,825]
["2010-10-05","Calico Bluff and Ford Lake Shale, undivided","PaDcb",6021,136,1353,825]
[null,"Crinoidal limestone","Pal",6030,143,837,745]
[null,"Klawock Formation, clastic","Pak",6031,143,840,745]
[null,"Lisburne Group, Wahoo Limestone, uppermost unit in eastern Alaska","Palw",6040,584,1222,930]
[null,"Lisburne Group Wahoo and Alapah Limestone units, undivided.  Northeastern Alaska (PaMl, DP002; DP004; ML002; PaMlu, AC002; PS002; Cl, TB002)","PaMl",6045,null,1326,730]
[null,"Chert and limestone, chiefly chert, Penn and Miss","TrMica",6080,null,511,615]
[null,"Lisburne Group, Alapah Limestone (Ma, ML006)","PaMla",6085,573,1190,930]
[null,"Lisburne Group, Akmalik Chert","PaMlc",6086,510,1191,930]
[null,"Nuka Formation","PMn",6090,131,962,535]
[null,"Saginaw Bay Formation, unit to be abandoned","Pasb",6095,143,991,745]
[null,"Granitic plutons south of Denali Fault","PPagi",6110,null,512,208]
[null,"Station Creek Formation andesitic volcanic rocks (correlated with Tetelna volcanics), Early Permian? and Pennsylvanian","Pat",6120,206,513,824]
[null,"Massive, dark weathering, coarse to medium grained, hornblendite-gabbro (Boswell)","Paum",6190,null,1180,824]
[null,"Lisburne Group, Kuna Formation, also includes black carbonaceous metachert, quartzite, and siliceous or calcareous phyllite, commonly distinctive silvery blue (phosphatic) bloom on weathered surfaces","Mlku",6200,510,514,930]
[null,"Tetelna Volcanics, volcanic flows, etc., lower greenschist facies","Pat",6220,206,515,824]
[null,"Metamorphosed intermediate igneous rocks","Pzi",6230,121,516,208]
[null,"Endicott Group, undivided.  Unit includes the Hunt Fork Shale, Noatak Sandstone, Kanayut Conglomerate, Kekiktuk Conglomerate, and Kayak Shale.","MDe",6300,null,517,535]
[null,"Endicott Group, Kekiktuk Conglomerate, and Kayak Shale and Lisburne Group, undivided.","Mkkl",6305,520,1230,535]
[null,"Lisburne Group, Tupik Formation, uppermost unit in western Alaska","Mlt",6315,573,1181,930]
[null,"Lisburne Group, Kogruk Formation (uppermost?) Fossiliferous limestone, Miss.","Mlkg",6320,540,518,730]
[null,"Lisburne Group, undivided","PaMl",6325,null,519,730]
[null,"Lisburne Group, informal lower part","Mlgl",6326,584,1192,730]
[null,"Lisburne Group, Nasorak Formation","Mlgn",6327,584,1197,730]
[null,"Lisburne Group and Kayak Shale, undivided","Mlk",6328,573,1006,535]
[null,"Endicott Group, Kayak Shale","Mk",6330,141,520,744]
[null,"Endicott Group, Interlayered dark gray to black phyllite and calcareous phyllite.  Unit is more siliceous than either Early Mississippian Kayak Shale or Late Devonian Hunt Fork Shale although it is lithologically similar to both.  At present, these rocks","MDkh",6331,121,545,734]
[null,"Younger limestones of Mystic stratigraphic sequence (Mississippian)","PMl",6335,null,521,210]
[null,"Iyoukeen and Peratrovich Formations, limestone, black chert, and black shale","Mls",6340,206,858,745]
[null,"Endicott Group, Kekiktuk conglomerate (Mke, AR002; DP004; ML002; Mke, Mke?, SP002) [Overprint symbol 14]","Mke",6360,null,522,342]
[null,"Endicott Group, Kayak Shale and Kekiktuk Conglomerate","Mkk",6365,121,523,342]
[null,"Endicott Group, Kekiktuk or Kanayut Conglomerate","Mkkc",6370,136,524,734]
[null,"Endicott Group, Kayak Shale and Kanayut Conglomerate","MDk",6375,2,934,734]
["2010-10-10","Kekiktuk Conglomerate and Ulungarat Formation, undivided (Mkk/Du, TB003)","MDku",6376,null,1358,745]
[null,"Lisburne Group, Utukok Formation - Limestone, Mississippian to Devonian","Mlut",6380,584,525,730]
[null,"Chert, Mississippian","Mc",6390,null,526,734]
[null,"Ford Lake Shale, laminated siliceous shale and chert","MDfl",6391,203,527,615]
[null,"Endicott Group, Kurupa Sandstone","Mks",6395,203,963,734]
[null,"Limestone and tuff","Mlt",6400,203,528,745]
[null,"Volcanic rocks and sills associated with Lisburne Group","Mv",6410,null,1196,799]
["2010-11-09","Volcanic rocks and sills associated with Kekiktuk Conglomerate","Mkkv",6411,121,1359,924]
[null,"Massive and pillowed basalt and other volcanic rocks","MDv",6412,203,529,799]
[null,"Pelly Mountains Suite, massive, medium to fine grained equigranular syenite; gradational to trachyte; intrusive equivalent to felsic volcanics of the Earn assemblage","Mpm",6450,null,711,556]
[null,"Totatlanika Schist, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian,","MDt",6510,null,530,813]
[null,"Totatlanika Schist?, metavolcanic and metavolcaniclastic rocks, Early Mississippian to Middle Devonian,","MDt?",6511,null,531,813]
[null,"Augen gneiss and schist, Mississipian or Devonian intrusion age, Yukon-Tanana terrane","MDyao",6521,null,532,556]
[null,"Augen gneiss and schist, Mississipian or Devonian intrusion age, Ruby terrane","MDrao",6522,null,533,556]
[null,"Augen gneiss and schist, Mississipian or Devonian intrusion age, Arctic Alaska terrane","MDaao",6523,null,892,556]
[null,"Globe quartzite unit  Similar to Keno Hill Quartzite in Yukon","Mgq",6530,121,534,911]
[null,"Carbonaceous phyllite","MDcp",6540,null,884,909]
[null,"Marble and metabasaltic dikes, Goodnews terrane","MDm",6580,null,1168,745]
[null,"Algal boundstone in SW Alaska","Sab",6610,206,1213,505]
[null,"Thin-bedded limestone","DSmdl",6615,null,594,505]
[null,"Point Augusta Formation limestone horizon within turbidite deposits","Stl",6616,143,862,505]
[null,"Heceta Limestone, reefoid limestone","Sab",6617,206,595,505]
[null,"Polymictic conglomerate and olistostrome deposits associated with Silurian turbibidites and reefs","Stpc",6618,143,834,505]
[null,"Silurian turbidite deposits including the Bay of Pillars Formation, Point Augusta and Tidal Formation and related units","Stg",6619,136,841,923]
[null,"Paradise Fork Formation and correlative units","Spf",6620,203,596,505]
[null,"Middle Silurian limestone","Sml",6625,136,597,505]
[null,"Point Augusta Formation argillite and chert","Sta",6630,null,598,734]
[null,"Staney Creek sandstone, limestone and dolostone, shallow water facies rocks","DSs",6631,131,926,734]
[null,"Micaceous calc-sandstone","Ss",6640,null,599,734]
[null,"Terra Cotta Mountains sandstone, sandstone and graptolitic shale","Stc",6660,121,600,745]
[null,"Nome Complex, dolostone","Snd",6670,2,1277,712]
[null,"Amy Creek unit, siliceous dolomite, chert, and basaltic greenstone, minor limestone, shale..., Silurian(?) to Late Proterozoic","SZa",6680,null,601,505]
[null,"Dolomite and argillite","SZa?",6681,null,602,505]
[null,"Siltstone and phyllite","SCb",6685,203,603,803]
[null,"Black phyllite and metalimestone","Spl",6686,143,1215,812]
[null,"Descon Formation, undivided sedimentary and volcanic rocks","SOdu",6689,null,1154,505]
[null,"Descon Formation graywacke turbidites","SOt",6690,206,842,505]
[null,"Descon Formation limestone","SOl",6691,143,843,505]
[null,"Descon Formation conglomerate","SOdcg",6692,null,970,505]
[null,"Descon Formation fine-grained sedimentary rocks [see also NSA 6820]","SOds",6693,203,973,505]
[null,"Iviagik Group, undivided","SOig",6695,null,1292,812]
[null,"Descon Formation - Dacitic to rhyolitic volcanic rocks","SOdr",6710,206,971,409]
[null,"Descon Formation, andesite and felsite","SOdv",6711,131,972,409]
[null,"Descon Formation, basaltic to andesitic volcanic rocks","SOdvm",6712,2,975,409]
[null,"Volcanic and sedimentary rocks, Doonerak antiform","SCvs",6720,206,1240,19]
[null,"Trondhjemite","St",6730,203,798,19]
[null,"Silurian volcanic rocks","Sv",6740,206,844,19]
[null,"Ultramafic rocks, southeast Alaska","Sum",6750,null,922,913]
[null,"Medium-grained biotite syenite and granite","SOgu",6760,136,969,19]
[null,"Metamorphosed extrusive, intrusive, and sedimentary rocks, undivided","SOsv",6800,203,800,388]
[null,"Metamorphosed intermediate and mafic plutonic rocks","SOmi",6805,206,801,388]
[null,"Marble and subordinate metavolcanic and metasediemntary phyllite and schist","SOm",6815,203,799,505]
[null,"Fine-grained low-grade metamorphic rocks of the Descon Formation and Wales Group [see also NSA 6693]","SOmd",6820,203,974,521]
[null,"Greenstone and greenschist, possible Descon association","SOgs",6825,136,846,409]
[null,"Metamorphosed and hornfelsed Descon Formation schist and semischist","SOdsv",6830,131,1078,505]
[null,"Marble, metamorphosed Decon Formation limestone","SOdm",6831,143,1119,505]
[null,"Metasedimentary rocks of Jesse Mountain,  fine grained, phyllitic to schistose, gray-weathering meta-argillite, black-weathering metaquartzite, marble, and brown weathering impure marble","SOj",6850,143,1239,505]
[null,"Endicott Group, Noatak Sandstone and phyllite, carbonate and clastic rocks of the Nakolik River, shale,","Dnu",6900,203,535,821]
[null,"Southeast Alaska undivided Devonian rocks","Du",6901,206,920,813]
[null,"Phyllite, slate, silicious siltstone, and argillite","Dp",6902,null,536,803]
[null,"Ruby marble [Dubious age call?, reported in source as Paleozoic?]","Dm",6905,null,537,745]
[null,"Troublesome unit, rhythmically interbedded cherty argillite to chert and thin beds of slate, Devonian(?), also McCann Hill Chert","Dtr",6910,121,538,803]
[null,"Shale and chert of Mystic stratigraphic sequence (Devonian)","Dsc",6911,206,539,513]
[null,"Endicott Group, Kanayut conglomerate and Noatak sandstone","MDkn",6914,206,542,698]
[null,"Endicott Group, Kanayut Conglomerate","Dky",6915,136,543,698]
[null,"Endicott Group, Kanayut Conglomerate - Quartz arenite and quartz wacke member","Dkyq",6916,131,544,698]
[null,"Endicott Group, Kanayut Conglomerate - Stuver Member nonmarine shale and quartzite","Dkys",6917,131,1193,698]
[null,"Endicott Group, Kanayut Conglomerate, middle member","Dkym",6918,null,1194,698]
[null,"Endicott Group, Kanayut Conglomerate - lower member, nonmarine shale","Dkyl",6919,null,1195,698]
[null,"Quail unit, conglomerate, phyllite, calc-phyllite, siltstone, and sandstone, Late Devonian(?), also Nation River Formation of Charley River quad.","Dnr",6920,null,546,803]
[null,"Calcareous clastic rocks; also Devonian sandstone and shale","Dnr?",6921,206,547,803]
[null,"Quartz wacke","Dnr2?",6922,136,548,803]
[null,"Endicott Group, Hunt Fork Shale","Dhf",6925,null,550,132]
[null,"Wacke members of Hunt Fork Shale and Beaucoup Formation, undivided (Dbw, AC002; Dbw, Dhbw, PS002; Dbcp, CH006)","Dhbw",6926,101,1331,132]
[null,"Beaucoup Formation, carbonaceous, siliceous, and calcareous sedimentary rocks and felsic volcanic rocks that grade downward and to the southwest into Skajit Limestone.  Laterally equivalent to Whiteface Mountain and Ambler volcanic and sedimentary rocks","Dbc",6927,143,688,813]
[null,"Port Refugio Formation","Dpr",6928,203,918,813]
[null,"Late Devonian thin-bedded limestone","Dtl",6929,131,868,712]
[null,"Limestone, Late Devonian","DSl",6930,143,551,815]
[null,"Carbonate rocks of the lower part of the Mystic stratigraphic sequence (Devonian and Silurian)","DSml",6931,203,552,513]
[null,"Wadleigh Limestone","Dwl",6932,143,1080,712]
[null,"Black Cap Limestone and Cedar Cove limestone member","Dbcl",6933,143,992,712]
[null,"Dark-greenish-gray fine-grained impure graywacke","Dg",6934,131,553,803]
[null,"Chloritic siltstone and conglomerate (Dc, AR002; Dqq, CH002) [Overprint symbol 13]","Dcs",6935,203,554,812]
[null,"Cedar Cove Formation","Drl",6936,136,860,805]
[null,"Karheen Formation and related rocks, conglomerate, Lower Devonian","Dkf",6937,131,859,923]
[null,"Kassan Limestone, part of Karheen","Dkfl",6938,143,919,712]
[null,"Karheen Formation turbidite facies rocks","Dkft",6939,206,968,805]
[null,"Cascaden Ridge, Beaver Bend combined correlative units, shale, siltstone, sandstone, conglomerate, and minor limestone, Middle Devonian","Dcb",6940,null,555,805]
["2010-08-26","Ulungarat Formation, a coarsening- and thickening-upward, shallow-marine to nonmarine fluvial sequence.  Base of the Ellesmerian sequence, Middle to Upper Devonian","Du",6941,null,1349,302]
[null,"Limestone (Late Devonian to mid-Silurian)","DSl",6944,143,556,815]
[null,"Schwatka unit -- Limestone and Ogilvie Formation of Clough (1980), Middle and Early Dev.","Ds",6945,null,557,712]
[null,"Beaucoup Formation, dark gray to orange weathering limestone (see also 7360)","DSol",6951,null,1050,712]
[null,"Barren Ridge limestone, calcarenite, calcareous siltstone, and limestone","DSca",6952,206,559,712]
[null,"Rendu Formation and related units, argillite and silty limestone turbidite","DSr",6953,131,869,712]
[null,"Lost Creek unit, lime mudstone and wackestone, Devonian and Silurian","Dlc",6955,143,560,712]
[null,"Limestone, dolomite, greenstone, and chert","DSls?",6956,null,561,812]
[null,"Laminated limestone, sandstone, and siltstone","DSls",6957,null,562,812]
[null,"Whirlwind Creek Formation and unnamed correlative units (Late Devonian, Frasnian through mid-Silurian, Wenlockian), reefy limestone and dolomite","DSwc",6960,206,563,712]
[null,"Conglomerate of the Kennel Creek Limestone","Dcg",6961,136,1026,805]
["2010-04-14","Berg Mountain Formation Limestone.  Associated with volcanic rocks of Berg Mountain Formation (NSA = 7022).  Also Kennel Creek Limestone","DSbl",6962,136,1340,712]
[null,"Tolovana Limestone, Middle Devonian to Early(?) Silurian,","DSt",6965,null,564,712]
[null,"Limestone, greenstone, and schist","DSt?",6966,null,565,521]
[null,"Older strata of the Porcupine River sequence, undivided","DCpu",6970,null,1098,805]
[null,"Older strata of the Porcupine River sequence, quartzite; might be eguivalent to St. Cyr in eastern Yukon","DCpu",6971,206,1245,805]
[null,"Beaucoup Formation, Ferriginuous and Calcareous schist","Dbf",6972,143,1223,813]
[null,"Beaucoup Formation, including volcanic rocks or volcanic rock clasts","Dbv",6973,136,1224,813]
["2010-10-05","McCann Hill Chert","Dmh",6975,null,1354,925]
[null,"McCann Hill Chert and Road River Formation, undivided","DOmr",6976,203,541,925]
[null,"McCann Hill Chert and Olgilvie Formation, undivided","Dmo",6977,206,540,805]
[null,"Baird Group; Massive light gray reefoid limestone and dolomite with local thin interbeds of calcareous phyllite","DSb",6980,null,1200,924]
[null,"Baird Group, Kugururok Formation (limestone)","Dbk",6981,206,1198,924]
[null,"Baird Group, Eli Limestone","Dbe",6982,null,1199,801]
[null,"Baird Group, Skajit Limestone","DSbs",6983,143,558,801]
[null,"Road River Formation, Hillard Limestone and other units, undivided","DCru",6990,null,566,805]
["2010-10-05","Road River Formation","DOrr",6991,203,1355,805]
[null,"Thin-bedded to massive, fine-grained, limestone with local interbedded tuff and mafic volcanic rocks","DOl",6995,143,1072,805]
[null,"Basaltic and andesitic flows, tuff, breccia, and volcanic conglomerate altered to greenstone, interbedded in Hunt Fork Shale","Dvt",7000,2,567,809]
[null,"Schwatka unit, mafic volcanic rocks, Middle and Early Devonian","Dsv",7010,21,568,799]
[null,"Woodchopper Volcanics, amygdaloidal basalt, pillow basalt, ..., equivalent to Schwatka unit?","Dwv",7015,21,569,799]
[null,"Freshwater Bay Formation and Kasaan Island Volcanics, Basalt and rhyolite with subordinate sedimentary rocks, Middle to Late Devonian","Dfb",7020,136,861,809]
[null,"Basalt and rhyolite on Prince of Wales and Kasaan Islands and andesite associated with Black Cap Limestone","Dv",7021,131,870,809]
[null,"Berg Mountain Formation, largely mafic volcanic rocks","DSv",7022,203,933,799]
[null,"Karheen Formation volcanic and hypabyssal rocks","Dcv",7030,206,1081,803]
[null,"Old Crow Suite, undivided","Dgr",7050,21,712,19]
[null,"Old Crow Suite granitic rocks:  medium to coarsely crystalline leucocratic biotite granite, Old Crow, Schaeffer, Sedgwick, Ammerman, and Fitton granites","Dgr",7051,21,713,19]
[null,"Old Crow Suite granitic rocks:  leucocratic syenite to hornblende nepheline syenite, Dave Lord syenodiorite","Dsr",7052,21,714,19]
[null,"Syenite, Chichagof Island, southeast Alaska, Alexander terrane","Dsy",7060,21,924,19]
[null,"Quartz diorite, Prince of Wales Island, southeast Alaska","Dqd",7065,131,925,19]
[null,"Diorite-gabbro","Ddg",7080,21,570,19]
[null,"Metamorphic rocks, undivided.  Includes carbonate rocks; quartzite and slate.","Dms",7200,121,571,924]
[null,"Gambier Bay Formation, undivided, sedimentary and volcanic rocks, marble and recrystallized limestone, phyllite and semischist, and tuffaceous marlstone, pillow breccia, volcanic conglomerate, aquagene tuff, subordinate basaltic to andesitic pillow flows","Dgu",7204,136,1082,815]
[null,"Gambier Bay Formation, sedimentary and volcanic rocks, marble and recrystallized limestone, phyllite and semischist, and tuffaceous marlstone, pillow breccia, volcanic conglomerate, aquagene tuff, subordinate basaltic to andesitic pillow flows","Dgv",7205,206,813,924]
[null,"Gambier Bay Formation and Retreat Group Marble","Dmg",7206,143,954,924]
[null,"Gambier Bay Formation, pyrite-bearing garnet-chlorite-amphibole-quartz-feldspar schist and gneiss","Dgg",7207,null,1066,924]
[null,"Gambier Bay Formation, homogeneous layered garnet-chlorite-quartz-feldspar schist and semischist ; with minor dark gray phyllite and chlorite-actinolite schist","Dgs",7208,null,1067,924]
[null,"Gambier Bay Formation, dark gray locally pyritic and graphitic semischist and phyllite; some quartz-rich semischist and Retreat Group; black siliceous phyllite on Admiralty Island","Dgp",7209,null,1068,924]
[null,"Nanook Limestone, Thin- to thick-bedded limestone, silicified limestone, and vuggy dolomite with minor amounts of siltstone and shale.  Includes Mount Copleston Limestone which is now Devonian part of unit, Nanook now considered Ordovician and older.","DZnl",7210,null,572,924]
[null,"Marble of the Schist Belt","Pzms",7215,143,1251,924]
[null,"Kaskawulsh Group of Kindle, mainly marble","Dkg",7220,143,573,815]
[null,"Endicott Group, Hunt Fork Shale, metamorphosed","Dhfm",7225,131,1225,815]
[null,"Phyllite and metaconglomerate","Dpmc",7230,206,574,801]
[null,"Thin bedded black, siliceous, carbonaceous phyllite and impure chert","Dbs",7235,206,575,801]
[null,"Fine-grained schistose volcanic rocks and phyllite, Devonian extrusion age,","Dyv",7240,null,576,815]
[null,"Yanert Fork sequence, thick sequence of marine metasedimentary and metavolcanic rocks, Late Devonian","Dy",7242,null,577,815]
[null,"Medium-grained granitic gneiss, Devonian intrusion age","MDyao",7250,null,579,556]
[null,"Orthogneiss within Nome Complex","Dgn",7251,203,1291,556]
[null,"Ambler metavolcanic and lesser metasedimentary rocks","Dav",7260,203,949,924]
[null,"Very light gray to brownish red weathering resistant schistose felsic volcanic rocks, Ambler sequence?","Davf",7261,136,589,924]
[null,"Very light gray to brownish red weathering resistant schistose felsic volcanic rocks, not Ambler sequence","Dvf",7262,203,1237,809]
[null,"Metamorphosed sills, dikes, and flows of andesite to rhyolite composition","Dvr",7270,null,1220,924]
[null,"Metasedimentary rocks, Late Devonian","Pzsc",7300,203,582,924]
[null,"Calcareous schist","Pzcs",7315,143,921,924]
[null,"Metabasalt and subordinate metasedimentary rocks, Late Devonian","Pzsc",7320,203,583,924]
[null,"Serpentinite, basalt, chert and gabbro, Late Devonian","Dmgs",7325,null,584,799]
[null,"Metagabbro, Late Devonian(?)","Dmgb",7330,null,585,924]
[null,"Light-brown weathering calcareous schist interbedded with gray quartz-mica schist and marble.  Brooks Range schist belt.","Pzsb",7350,136,586,801]
[null,"Orange weathering chloritic marble Brooks Range schist belt (see also 6950, 6951)","DZsm",7360,null,1049,801]
[null,"Schist and paragneiss, Arrigetch-Igikpak thermal high","DZsg",7361,136,1218,801]
[null,"Pelitic, calcareous, and quartz-feldspar metasedimentary rocks, Devonian or older,","DPzmp",7400,136,587,801]
[null,"Fine-grained, schistose metasedimentary and metavolcanic rocks, Devonian or older, [Evidence suggests that this unit is most likely Triassic, at least in its western exposures and correlates with similar units all along the north side of the Denali, unit","Dys",7402,206,588,815]
[null,"Metasedimentary and metavolcanic rocks of Tukpahlearik Creek, undivided","DOtu",7450,131,590,805]
[null,"Carbonaceous quartzite and quartz conglomerate of Tukpahlearik Creek","DOtq",7451,null,591,748]
[null,"Marble and quartz schist of Tukpuhlearik Creek","DOtmq",7453,null,592,939]
[null,"Pelitic schist and greenstone of Tukpaklearik Creek","DOtpg",7454,2,593,815]
[null,"Pelitic schists of Tukpaklearik Creek","DOtp",7455,null,687,245]
[null,"Nome Complex, undivided","DZng",7460,131,1268,245]
[null,"Nome Complex dolostone, metalimestone, and marble","Dnd",7461,null,1269,707]
[null,"Nome Complex, pelitic, calcareous, and graphitic schist","DSns",7462,203,1270,707]
[null,"Nome Complex, pelitic schist","Dnps",7463,206,1271,707]
[null,"Nome Complex, black metalimestone and marble","DOnb",7464,136,1272,707]
[null,"Black marble, Nome Complex","DCbm",7465,143,1273,707]
[null,"Nome Complex, Calcareous schist of Kwinnik Mountain","DCnk",7466,131,1274,707]
[null,"Nome Complex, mixed marble, graphitic metaquartzite, and schist","DOnx",7467,2,1275,707]
[null,"Nome Complex, mixed marble, graphitic metaquartzite, and schist (overlay)","DOnx1",7468,121,1276,707]
[null,"Carbonate rocks","OCc",7500,203,604,924]
[null,"Tcherskidium-bearing limestone","Olss",7510,null,605,924]
[null,"Brown and gray 'chippy' shale, silty shale and silicified limestone","Os",7515,136,606,924]
[null,"Novi Mountain and Telsitna Formations, and unnamed correlative units, massive dolomite and limestone, Late to Middle Ordovician","Ont",7520,131,607,712]
[null,"Jones Ridge Limestone, massive oolitic, typically silicified limestone","OCjr",7525,131,608,924]
[null,"Hillard Limestone","OChl",7530,206,609,924]
[null,"Limestone and dolomitic limestone","SOdl",7535,143,610,712]
[null,"Nome Complex, pink to light gray weathering, gray to tan fine-grained dolostone with distinct color mottling","Od",7540,143,611,712]
[null,"Limestone and shale","Oshd",7541,143,612,712]
[null,"Argillaceous limestone and limestone (Oal, TE002; TE004)","Qal",7555,138,1316,924]
[null,"Algal boundstone and lime mudstone","Oab",7560,null,615,801]
[null,"Limestone and dolomitic limestone","OZl",7565,206,1267,521]
[null,"Lime mudstone","Ols",7570,143,616,521]
[null,"Sandstone, siltstone, and limestone, York terrane (OZt, TE004; SEWPEN)","OZp",7575,136,1322,521]
[null,"Slate of the York region, slightly to moderately metamorphosed graphitic siltite, slate, graywacke, and calcareous siltite","OZt",7576,21,674,521]
[null,"Post River Sandstone and Lyman Hills Formations and correlative units, silty limestone and siltstone, Early Ordovician","SCpl",7580,136,617,712]
[null,"Chert and phyllite, Telida sub-terrane of Munchumina terrane","Oc",7581,136,768,958]
[null,"Franklin Mountain, Dolomite succession with local basal quartzite and red bed member","OCfm",7590,143,1246,924]
[null,"Broken Skull, Dolomite succession with local basal quartzite and red bed member","OCbs",7591,null,1247,924]
[null,"Fossil Creek Volcanics, undivided -- Alkali basalt, agglomerate, and volcaniclastic conglomerate","Ofc",7610,21,618,812]
[null,"Andesitic to basaltic volcaniclastic rocks and local tuffaceous phyllite, gabbro, and diabase, and black phyllite","OCv",7620,21,619,812]
[null,"Granodiorite on Prince of Wales Island","Ogd",7650,null,923,812]
[null,"Hornblende gabbro and subordinate hornblende pyroxenite and hornblendite","Ogb",7670,null,1155,817]
[null,"Interlayered pure and impure marble, quartz-graphite schist, and lesser pelite, calc-schist, and mafic schist","OCx",7700,null,620,610]
[null,"Predominantly marble and quartz-graphite schist above biotite grade; upgraded equivalent of mixed unit [OCx]","OCxh",7701,121,621,610]
[null,"Ordovician chert, including Livengood Dome Chert, chert, siliceous slate and rare greenstone and limestone, Late Ordovician (protolith)","Och",7710,136,622,812]
[null,"Limestone marker bed within Livengood Dome Chert","Oldl",7711,null,623,911]
[null,"Casadepaga schist","Ocs",7720,2,624,795]
[null,"Calcareous and mafic schist","Ocsh",7721,2,625,911]
[null,"Older carbonate rocks of the Nanielik antiform,","OCc",7740,206,1231,924]
[null,"Ordovician carbonate rocks of the Nanielik antiform,","Oc",7741,143,1232,924]
[null,"Nome Complex, impure marble (Oim, BN002; BN004; KZ003; NM005; SO002; SO004; SO005; TE004; Pzim, BN002; SO002)","Oim",7750,143,626,924]
[null,"Nome Complex, impure marble, biotite grade (Oimh, BN002; SO002)","Oimh",7751,143,614,712]
[null,"Metaigneous and minor metasedimentary rocks","OCmi",7800,206,976,911]
[null,"Adams Argillite","Ca",7970,203,627,911]
[null,"Quartzite and argillite","Cqa",7971,136,628,911]
[null,"Funnel Creek Limestone","Cf",7980,131,629,911]
[null,"Tindir Group, undivided, Early Cambrian and Late Proterozoic argillite, quartzite, dolomite, dolo-arenite...","CZtg",7990,203,630,795]
["2010-10-01","Upper Tindir Group, undivided","CZtu",7991,null,1350,995]
["2010-10-01","Upper Tindir Group, limestone, Early Cambrian","Ctls",7992,143,1351,995]
[null,"Wickersham unit -- Limestone, Early Cambrian and Late Proterozoic","CZwl",8000,143,631,795]
[null,"Avalanche, light grey, buff, yellow, and orange weathering, crypto grained dolomite, silty dolomite, dolomitic siltstone and dolomitic mudstone","Cad",8005,143,716,795]
[null,"Hess River, shale, black, pyritic, unfossiliferous; occurs as interstratified thick units of black calcareous shale and rusty black shale","Ch",8006,203,719,911]
[null,"Rockslide, platy calcareous shale and silty, dark grey fine- to crypto-grained limestone; minor thin beds of light brown to grey weathering platy dark crypto-grained limestone and rare bands of buff dolomite","Cr",8007,143,720,795]
[null,"Hyland Group, consists upwards of coarse turbiditic clastics, limestone, and fine clastics typified by maroon and green shale; includes scattered mafic volcanic rocks","CZhy",8010,null,715,795]
[null,"Neruokpuk, turbiditic sandstone, quartzite, grit, and pebble conglomerate interbedded with siltstone and lesser argillite","CZnp",8011,null,717,795]
[null,"Neruokpuk, fine to coarse sandstone, grit and pebble conglomerate, poorly sorted, turbiditic, locally feldspathic; siltstone and slaty argillite interbeds; local maroon, green and Oldhamia bearing slate in upper part","CZng",8012,null,718,795]
[null,"Sedimentary rocks, undivided","CZu",8013,131,1090,795]
[null,"Medium- to thick-bedded, commonly light-gray to dark-gray lime mudstone","Cls",8014,143,1120,913]
[null,"Middle or lower Cambrian thin-bedded platy limestone associated with coarse-grained silciclastic sandstone and granule conglomerate, possible shale","Cs",8015,143,1044,256]
[null,"Marmot -- Whale Mountain volcanics","Cv",8110,null,1206,812]
[null,"Mafic intrusive rocks","Ci",8200,null,1207,817]
[null,"Ultramafic and mafic rocks and greenstone, Cambrian and/or preCambrian","CZum",8250,null,632,817]
[null,"Wickersham unit -- Grit, Early Cambrian and Late Proterozoic","CZw",8300,null,633,795]
[null,"Wickersham unit -- Maroon and green argillite, Early Cambrian and Late Proterozoic (unit CZwa, LG002; ng, FB002; Cal, TN002; western exposures of unit PzpCa in part, CI002)","CZwa",8310,206,634,795]
[null,"Undivided shallow marine carbonate units of Holitna Basin area, late Proterozoic to Devonian","DZn",8340,null,635,712]
[null,"Oolitic limestone, Khuchaynik Dolomite of Babcock and others, Big River Dolostone of Babcock and others, Windy Fork Formation of Babcock and others","CZds",8350,121,636,712]
[null,"Nome Complex, old dolostone","Cnd",8360,143,1278,256]
[null,"Various limestone bodies","ls",8430,null,638,911]
[null,"Sedimentary and igneous rocks corresponding to the Livengood sequence of Weber and others (1992)","PzZl",8440,null,1144,256]
[null,"Sedimentary and igneous rocks corresponding to the Fairbanks-White Mountains sequence of Weber and others (1992)","PzZl",8441,203,1145,256]
[null,"Sedimentary and igneous rocks corresponding to older parts of the Schwatka-Rampart area sequence of Webber and others (1992)","DZsi",8442,null,1150,817]
[null,"Mafic igneous rocks, Paleozoic and/or Late Proterozoic","MzZum",8450,null,639,817]
[null,"Meta-intrusive rocks of intermediate composition","PzZi",8500,null,760,186]
[null,"Ruby quartz-mica schist","PzZrqm",8601,143,640,797]
[null,"Quartz-mica schist.  Assigned to Arctic Alaska terrane","PzZaqs",8602,null,641,797]
[null,"Quartz-rich metasedimentary rocks, Brooks Range Central belt and part of Northern thrust assemblages","PzZacs",8603,null,1219,85]
[null,"Metasedimentary rocks of Bluecloud Mountain, gray phyllite, dark-gray to black metaquartzite, calcareous phyllite, and impure marble","PzZb",8604,203,1235,85]
[null,"Mixed schists of the Kallarichuk Hills, undivided.  Schist belt.  Assigned to Seward terrane","PzZk",8605,206,642,186]
[null,"Siliceous schist of the Kallarichuk Hills.  Assigned to Seward terrane","PzZss",8606,136,761,186]
[null,"Calcareous schist - albite-rich subunit, western part of Schist belt","DZa",8607,143,1209,186]
[null,"Calcareous schist - metachert and conglomerate subunit, Schist belt","DZmc",8608,203,1210,186]
[null,"Calc-schist and impure marble, early Paleozoic or preCambrian","YZnc",8610,143,643,365]
[null,"Marble and intercalated gneissic rocks, early Paleozoic or preCambrian","PzZel",8611,143,1217,365]
[null,"Dolomite and marble","Pzydm",8615,203,644,797]
[null,"Metamorphic complex, crystalline limestone, Paleozoic (Ord-Dev) or preCambrian","Pzrmc",8620,203,645,797]
[null,"Metamorphic complex, schist, crystalline limestone, quartzite, greenstone, slate, and phyllite","PzZm",8625,null,646,496]
[null,"Metamorphic rocks, Alexander terrane","PzZas",8626,203,851,496]
[null,"Pelitic schist, early Paleozoic or preCambrian, includes Chena River sequence","PzZysa",8630,null,647,85]
[null,"Marble subunit of pelitic schist, early Paleozoic or preCambrian, includes Chena River sequence","PzZysm",8631,143,1324,85]
[null,"Sillimanite gneiss subunit, pelitic schist","PzZpg",8632,null,648,797]
[null,"Pelitic and quartzose schist sequence","PzZiqs",8633,135,649,797]
[null,"Pelitic schist of Nixon Fork basement","YZns",8640,136,650,365]
[null,"Quartzite, grit, and argillite.  Is this Wickersham?","Zq",8641,206,1188,365]
[null,"Metamorphic complex, schist and quartzite with some crystalline limestone, younger unit, Paleozoic (Ord-Dev) or preCambrian","PzZmc",8650,121,651,797]
[null,"Metasedimentary and metavolcanic rocks, undivided","PzZcm",8655,null,1227,797]
[null,"Mafic schist","PzZms",8660,206,652,797]
[null,"Mafic schist","PzZm",8661,206,1236,797]
[null,"Metabasite, massive mafic semischist and agmatite in the Coast Mountains","PzZyv",8665,136,955,797]
[null,"Metasiltstone and phyllite, Grantley Harbor Fault Zone","PzZt",8670,null,1288,797]
[null,"Metalimestone, Grantley Harbor Fault Zone","PzZl",8671,143,1289,797]
[null,"Felsic metavolcanic rocks of Nixon Fork basement","YZnv",8700,131,653,365]
[null,"Meta-quartz diorite","Ynqd",8710,null,654,806]
[null,"Kaigani, False Point Retreat, and Bronaugh Islands plutons (orthogneiss)","CZog",8720,203,932,806]
[null,"Metamorphic rocks of eastern Prince of Wales Island","Cmgo",8721,136,993,85]
[null,"Undivided Wales Group","PzZsv",8750,null,927,186]
[null,"Wales Group semischist and black quartzite","PzZq",8751,203,928,186]
[null,"Wales Group marble","PzZc",8752,143,929,186]
[null,"Wales Group metafelsite","PzZf",8753,203,930,85]
[null,"Wales Group mafic volcanic rocks","PzZmv",8754,206,931,186]
[null,"Gneiss and quartzite of the Ruby crystalline complex, Paleozoic or preCambrian","PzZrpg",8801,131,655,85]
[null,"Gneiss, schist, and quartzite of the Yukon-Tanana crystalline complex; Pelly Gneiss in Yukon in part","PzZypg",8802,203,656,85]
[null,"Metasedimentary and metaigneous rocks of the Hammond terrane, Brooks Range, lumping of many otherwise defined units","DSskm",8850,null,1147,801]
[null,"Metamorphic rocks, lenses near Kobuk and Victoria Creek fault systems, amphibolite facies","PzZmr",8852,null,1148,85]
[null,"Nome Complex high-grade schist","PzZh",8860,null,1286,186]
[null,"Nome Complex high-grade marble","PzZm",8861,143,1287,186]
["2010-10-01","Upper Tindir Group, dolomitic sandstone and shales, Late Proterozoic","Ztds",9005,203,1352,995]
[null,"Pinguicula/Fifteen Mile (Lower) and Tindir Group, lower part","Zt",9010,null,692,727]
["2010-10-05","Lower Tindir Group, dolomite, dolomitic limestone, and limestone","Ztdl",9011,203,1356,727]
[null,"Lower Tindir Group, stromatolitic limestone","Ztsl",9012,206,657,727]
[null,"Lower Tindir Group, shale member","Zts",9013,136,658,727]
["2010-10-06","Lower Tindir Group, Quartzite and quartzitic sandstone","Ztq",9014,131,1357,727]
[null,"Upper Tindir Group, basalt and red beds member","Ytb",9040,null,659,817]
[null,"Greenstone","Ytb?",9041,null,660,817]
[null,"Granitic rocks, preCambrian(?)","Zgr",9045,null,661,907]
[null,"Basic intrusive rocks","Zbi",9050,null,1149,817]
[null,"Ernie Lake pluton orthogneiss","Zog",9060,203,1233,907]
[null,"Grit, Late Proterozoic, bimodal quartzite, gray and olive-gray greenschist facies argillite","Zwg",9110,null,637,795]
[null,"Dolostone, limestone, orthoquartzite, and minor chert","Zs",9120,143,1045,911]
[null,"Rapitan:  Basal rift conglomerates (1) overlain by glacial diamictite (2) in turn succeeded by fine to coarse siliclastic rocks (3) and equivalent dolostone (4)","Zr",9130,null,1249,345]
[null,"Sheepbed:  Recessive, black weathering shale and siltstone; minor quartzite and limestone","Zsb",9140,206,1250,345]
[null,"Wernicke Breccias:  Hematitic and dolomitic breccia and related metasomatized country rock; breccia contains variably altered rotated siliceous and carbonate clasts (Wernicke Supergroup) and minor dyke rock; breccia and metasomatites enriched in Cu, Co,","Yw",9150,136,721,598]
[null,"Katakturuk Dolomite and  Lake Gp.:  Dolostone and silty dolostone, locally stromatolitic, locally with chert nodules and sparry karst infillings, interbedded with lesser black siltstone and shale, laminated mudstone, and quartzose sandstone; local dolomi","lPkd",9160,143,722,245]
[null,"Katherine and Tigonkweine:  Mature, very fine grained, thin to very thick bedded, brown, greenish grey and white orthoquartzitic sandstone with recessive intervals of dark grey to black shale; rare stromatolitic dolomite","ZYkt",9165,136,1248,245]
[null,"Quartet Gp.:  Black weathering shale, finely laminated dark grey weathering siltstone, and thin to thickly interbedded planar to cross laminated light grey weathering siltstone and fine grained sandstone; minor interbeds of orange weathering dolostone in","lPq",9170,null,723,245]
[null,"Fairchild Lake Gp.:  Lower:  greenish grey weathering calcareous laminated siltstone, grey weathering fine grained sandstone, and minor brown weathering carbonate, ripple cross-laminated; upper:  siltstone, dolomitic siltstone, and dolostone","lPfl",9180,203,724,245]
[null,"Hart River, undivided Mafic volcanic flows and and their possible intrusive equivalents","Yhr",9210,21,725,958]
[null,"Hart River Volcanics:  mafic volcanic flows, generally massive and fine-grained, locally pillowed","Yhv",9211,21,726,958]
[null,"Hart River Sills:  resistant dark weathering diorite and gabbro sills and dikes","Yhs",9212,21,727,958]
[null,"Khose Creek Volcanics:  basic to intermediate volcanic flows and aquagene tuffs","Ykc",9213,21,728,958]
[null,"Metasedimentary and metavolcanic rocks of Mount Angayukaqsraq","PzZma",9300,203,662,186]
[null,"Greenschist facies muscovite chlorite schist, quartzite and phyllite [Fairbanks schist unit - undivided]","PzZyqs",9320,null,663,65]
[null,"Fairbanks schist unit - Cleary subunit, white felsic schist, micaceous quartzite chloritic or actinolitic greenschist, greenstone and marble","PzZyqs",9321,null,664,65]
[null,"Pelitic and quartzose schist of the Alaska Range","PzZaqs",9322,135,665,65]
[null,"Quartzite subunit of quartzite and quartzitic schist","PzZyqs",9323,null,666,65]
[null,"Calc-silicate and marble subunit of quartzite and quartzitic schist","PzZyqs",9324,143,667,65]
[null,"Pelitic and quartzitic schist of the Ruby terrane","PzZrqs",9325,138,668,65]
[null,"Greenschist subunit of quartzite and quartzitic schist  [Not found yet on map.]","PzZyqs",9326,null,669,65]
[null,"Quartzitic and pelitic schist of the Yukon-Tanana crystalline complex","PzZyqs",9327,203,670,65]
[null,"Marble subunit of quartzitic and pelitic schist of the Yukon-Tanana crystalline complex","PzZyqm",9328,143,1323,65]
[null,"Idono Complex, Early Proterozoic, metaplutonic rocks, amphibolite, and minor metasedimentary rocks","Xi",9400,null,671,598]
[null,"Includes coarse-grained gabbro, diabase and altered equivalents which locally are garnet-glaucophane rocks.  Of two ages","pCg",9410,null,673,937]
[null,"Amphibolite facies orthogniess and minor amphibolite and pelitic schist.  Kanektok or Kilbuck terrane","Xo",9420,null,672,598]
[null,"Nome Complex undifferentiated; chloritic schists and marble schists","pCn",9425,null,675,null]
[null,"Nome Complex, chlorite-epidote-amphibole schists, intensely deformed, locally graphitic; retograded blueschist facies rocks locally; subordinate schistose limestone","pCne",9426,null,676,null]
[null,"Nome Complex, dark schistose limestone intercalated with subordinate chloritic schist","pCnl",9427,null,677,null]
[null,"Kigluaik Group, undifferentiated","pCmu",9430,null,678,null]
[null,"Coarse-grained marble, locally contains mica and either olivine or monticellite","pCm",9450,null,679,null]
[null,"Tigaraha Schist, biotite-garnet schist","pCb",9460,null,680,null]
[null,"Marble and calc-silicate rocks intercalated in Tigaraha Schist","pCbm",9461,null,681,null]
[null,"Orthogneiss","pCgn",9470,null,682,null]
[null,"Metavolcanic rocks (Zv, BN005)","Zv",9475,null,1315,598]
[null,"Biotite-hornblende-quartz-plagioclase paragneiss","pCgu",9480,null,683,null]
[null,"Quartz-biotite-plagioclase-hornblende paragneiss and local calc-silicate rock","pCgl",9490,null,684,null]
[null,"Completely unknown","bu",10000,null,1063,978]
[null,"Clasitc sedimentary rocks","SED",10100,null,1054,490]
[null,"Carbonate sedimentary rocks","CARB",10400,null,1055,490]
[null,"Chemical sedimentary rocks","CHEM",10800,null,1056,490]
[null,"Volcanic rocks","VOLC",11000,null,1057,274]
[null,"Plutonic rocks","PLUT",11400,null,1058,274]
[null,"Hypabyssal rocks","HYP",11800,null,1059,274]
[null,"Low-grade metamorphic rocks","LGM",12000,null,1060,899]
[null,"High-grade metamorphic rocks","HGM",12500,null,1061,899]
[null,"High-grade metamorphic rocks, carbonates","HGMC",12600,null,1062,899]
[null,"Hornfels and migmatite","HFS",12950,null,1053,899]
[null,"Hornfelsed zones.",null,20000,2,685,0]