This data set is a portion of a statewide geology database, which is being compiled by the U.S. Geological Survey's National Surveys and Analysis (NSA) project, whose goal is to compile geologic, geochemical, geophysical, and other data.
Wilson, Frederic H., Mohadjer, Solmaz, Labay, Keith A., and Shew, Nora, 2006, Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map for the Northern Alaska Peninsula, southwest Alaska: U.S. Geological Survey Open-File Report OFR 2006-1303.This is part of the following larger work.Online Links:
This is a Vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000256
Ordinates (y-coordinates) are specified to the nearest 0.000256
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.9787.
| Value | Definition |
|---|---|
| 98 | um - unmapped area |
| 99 | bu - bedrock unknown |
| 100 | Qs - Surficial deposits, undivided (Quaternary) |
| 101 | ice |
| 102 | water |
| 300 | Qv - Volcanic rocks, undivided (Quaternary) |
| 305 | Qhv - Volcanic rocks (Quaternary, Holocene) |
| 310 | Qv - Volcanic rocks, undivided (Quaternary) |
| 311 | Qv - Volcanic rocks, undivided (Quaternary) |
| 312 | Qdf - Debris-flow deposits (Quaternary, Holocene) |
| 313 | Qmf - Volcanic rubble and mudflows (Quaternary, Holocene) |
| 314 | Qmf - Volcanic rubble and mudflows (Quaternary, Holocene) |
| 402 | Qamp - Andesite and dacite domes (Quaternary) |
| 450 | QTv - Volcanic rocks, undivided (Quaternary, Pleistocene or Tertiary, Pliocene) |
| 460 | QTv - Volcanic rocks, undivided (Quaternary, Pleistocene or Tertiary, Pliocene) |
| 500 | Ts - Sedimentary rocks (Tertiary, Pliocene or Miocene) |
| 540 | Unit falls outside the northern Alaska Peninsula map area. |
| 630 | Ttyh - Kenai Group, Tyonek Formation and Hemlock Conglomerate, undivided (Tertiary, Miocene and Oligocene) |
| 850 | Tcl - Copper Lake Formation, undivided (Tertiary, Eocene and Paleocene?) |
| 855 | Twf - West Foreland Formation (Tertiary, early Eocene and late Paleocene) |
| 1000 | Tvu - Volcanic rocks, undivided (Tertiary) |
| 1003 | Tvu - Volcanic rocks, undivided (Tertiary) |
| 1011 | Tvr - Felsic volcanic rocks (Tertiary) |
| 1025 | Tb - Basaltic volcanic rocks (late Tertiary) |
| 1030 | Tpg - Gibraltar Lake Tuff (Tertiary, Pliocene? to Oligocene?) |
| 1031 | Tpg - Gibraltar Lake Tuff (Tertiary, Pliocene? to Oligene?) |
| 1070 | Tmf - Tuffaceous felsic volcanic rocks (Tertiary, Oligocene and Eocene) |
| 1081 | Tmv - Volcanic rocks, undivided (Tertiary, Oligocene and Eocene) |
| 1082 | Tmba - Basalt and andesite (Tertiary, Oligocene and Eocene) |
| 1084 | Tmba - Basalt and andesite (Tertiary, Oligocene and Eocene) |
| 1087 | Tmba - Basalt and andesite (Tertiary, Oligocene and Eocene) |
| 1111 | Tmba - Basalt and andesite (Tertiary, Oligocene and Eocene) |
| 1112 | Tmf - Tuffaceous felsic volcanic rocks (Tertiary, Oligocene and Eocene) |
| 1125 | Tmba - Basalt and andesite (Tertiary, Oligocene, and Eocene) |
| 1130 | Tvig - Ignimbrite (Tertiary, Paleocene) |
| 1200 | Unit falls outside the northern Alaska Peninsula map area |
| 1203 | Tig - Granite and aplite (Tertiary, Oligocene? and younger) |
| 1205 | Ti - Intrusive rocks, undivided (Tertiary) |
| 1275 | Togd - Granodiorite and quartz monzodiorite (Tertiary, Oligocene and late Eocene) |
| 1300 | Teg - Granite (Tertiary, late Eocene) |
| 1318 | Tign - Gabbronorite (Tertiary) |
| 1320 | Tipg - Older granite (Tertiary, Paleocene) |
| 1325 | Tpgr - Peralkaline granite (Tertiary, Oligocene? and younger) |
| 1350 | Tigd - Granodiorite (Tertiary, Paleocene) |
| 1600 | TKv - Volcanic rocks (Tertiary and(or) Cretaceous) |
| 1602 | TKr - Rhyolite and dacite flows, tuff, dikes, and sills (Tertiary and(or) Cretaceous) |
| 1603 | TKr - Rhyolite and dacite flows, tuff, dikes, and sills (Tertiary and(or) Cretaceous) |
| 1604 | TKr - Rhyolite and dacite flows, tuff, dikes, and sills (Tertiary and(or) Cretaceous) |
| 1635 | TKb - Basalt flows (Tertiary and(or) Cretaceous) |
| 1655 | TKg - Granitic rocks, undivided (Tertiary and(or) Cretaceous) |
| 1656 | TKgr - Granite and alaskite (Tertiary and(or) Cretaceous) |
| 1657 | TKgs - Syenitic rocks (Tertiary and(or) Cretaceous) |
| 1658 | TKqm - Quartz monzonite and quartz monzodiorite (Tertiary and(or) Cretaceous) |
| 1660 | TKgd - Granodiorite (Tertiary and(or) Cretaceous) |
| 1665 | TKqd - Monzodiorite and quartz diorite (Tertiary and(or) Cretaceous) |
| 1670 | Unit falls outside the northern Alaska peninsula map area |
| 1955 | Kkg - Kaguyak Formation (Upper Cretaceous, Maastrichtian and Campanian) |
| 1961 | Ksm - Saddle Mountain section of Magoon and others (1980) (Upper Cretaceous, Maastrichtian) |
| 1970 | Kk - Kuskokwim Group, undivided (Cretaceous, Campanian? to Albian?) |
| 1985 | Kkn - Kuskokwim Group, nearshore facies (Cretaceous) |
| 2190 | Unit falls outside the northern Alaska peninsula map area |
| 2260 | Kkv - Kuskokwim Group?, volcanogenic rocks (Cretaceous?) |
| 2410 | Kg - Plutonic rocks, undivided (Cretaceous) |
| 2420 | Kgd - Granodiorite (Cretaceous) |
| 2430 | Kqd - Quartz diorite (Cretaceous) |
| 2460 | Kgr - Granite (Cretaceous) |
| 2470 | Kqms - Quartz monzonite and syenite (Late Cretaceous) |
| 2480 | Klgd - Granodiorite (Late Cretaceous) |
| 2830 | KTrag - Togiak-Tikchik Complex, Argillite and graywacke (Lower Cretaceous to Upper Triassic) |
| 2831 | KTragi - Togiak-Tichik Complex, Argillite and graywacke, cut by dike swarms (Cretaceous to Triassic) |
| 2855 | KJkr - Koksetna River sequence of Wallace and others 1989 (Lower Cretaceous, Valanginian to Upper Jurassic, Kimmeridgian) |
| 2870 | KJv - Olivine basalt and fragmental volcanic rocks (Cretaceous or Jurassic) |
| 2872 | KJvs - Volcanic and sedimentary rocks (Lower Cretaceous to Middle Jurassic) |
| 2900 | KJg - Mafic granitic rocks (Cretaceous and(or) Jurassic) |
| 3010 | Jn - Naknek Formation (Upper Jurassic, Thithonian to Oxfordian) |
| 3012 | Jnn - Naknek Formation, Northeast Creek Sandstone Member (Upper Jurassic, Oxfordian) |
| 3013 | Jnst - Naknek Formation, Snug Harbor Siltstone Member (Upper Jurassic; Kimmeridgian and Oxfordian) |
| 3014 | Jnp - Naknek Formation, Pomeroy Arkose Member (Upper Jurassic, Kimmeridgian and Oxfordian?) |
| 3016 | Jnc - Naknek Formation, Chisik Conglomerate Member (Upper Jurassic) |
| 3020 | Jcp - Chinitna Formation, Paveloff Siltstone Member (Middle Jurassic, Callovian) |
| 3030 | Jct - Chinitna Formation, Tonnie Siltstone Member (Middle Jurassic, Callovian) |
| 3150 | Jkw - Graywacke of Kulukak Bay (Middle to Upper Jurassic) |
| 3181 | Jtb - Tuxedni Group, Bowser Formation (Middle Jurassic, Callovian and Bathonian) |
| 3182 | Jtt - Tuxedni Group, Twist Creek Siltstone (Middle Jurassic, Bajocian) |
| 3183 | Jtc - Tuxedni Group, Cynthia Falls Sandstone (Middle Jurassic, Bajocian?) |
| 3184 | Jtf - Tuxedni Group, Fitz Creek Siltstone (Middle Jurassic, middle Bajocian) |
| 3185 | Jtg - Tuxedni Group, Gaikema Sandstone (Middle Jurassic, lower middle Bajocian) |
| 3186 | Jtrg - Tuxedni Group, Red Glacier Formation (Middle Jurassic, lower Bajocian to lower middle Bajocian) |
| 3220 | Jms - Togiak-Tikchik Complex, Sedimentary rocks (Lower Jurassic) |
| 3250 | Jtk - Talkeetna Formation, undivided (Lower Jurassic) |
| 3251 | Jtkh - Talkeetna Formation, Horn Mountian Tuff Member (Lower Jurassic) |
| 3252 | Jtkp - Talkeetna Formation, Portage Creek Agglomerate Member (Lower Jurassic) |
| 3253 | Jtkm - Talkeetna Formation, Marsh Creek Breccia Member (Lower Jurassic) |
| 3260 | JTrp - Togiak-Tikchik Complex, Phyllite and chert (Lower Jurassic and Upper Triassic?) |
| 3380 | Jtr - Trondhjemite (Late Jurassic) |
| 3402 | Jqm - Granodiorite and quartz monzonite (Jurassic) |
| 3403 | Jqd - Quartz diorite, tonalite, and diorite (Jurassic) |
| 3404 | Jqd - Quartz diorite, tonalite, and diorite (Jurassic) |
| 3405 | Jqd - Quartz diorite, tonalite, and diorite (Jurassic) |
| 3420 | Jla - Lamporphyre and basalt dikes (Jurassic) |
| 3450 | Mzmi - Mafic igneous rocks (Mesozoic?) |
| 3495 | Jmu - Mafic and ultramafic plutonic rocks (Early Jurassic) |
| 3821 | Jssc - Chert, sandstone, and siltstone (Lower Jurassic) |
| 4011 | Trcg - Togiak-Tikchik Complex, Triassic limestone (Upper Triassic) |
| 4012 | Trlc - Limestone, silty limestone, and chert (Upper Triassic-Norian) |
| 4020 | Trk - Kamishak Formation, undivided (Upper Triassic, Norian) |
| 4022 | Trku - Kamishak Formation, Ursus Member (Upper Triassic, Norian) |
| 4023 | Trkm - Kamishak Formation, middle Member (Upper Triassic, Norian) |
| 4024 | Trkb - Kamishak Formation, Bruin Limestone Member (Upper Triassic, Norian) |
| 4035 | Trcg - Togiak-Tikchik Complex, Triassic limestone (Upper Triassic) |
| 4050 | Trsh - Gray shale and gray volcaniclastic sandstone (Triassic) |
| 4215 | Trv - Togiak-Tikchik Complex, Volcanic rocks (Upper Triassic) |
| 4425 | Trc - Cottonwood Bay Greenstone and Chilikradrotna Greenstone (Triassic) |
| 4950 | Mzm - Togiak-Tikchik Complex, Melange (Mesozoic?) |
| 5200 | MzPzu - Metamorphic rocks, undivided (Mesozoic and(or) Paleozoic) |
| 5220 | JPk - Kakhonak and Tlikakila Complexes (Jurassic, Triassic, and Permian(?) or older(?)) |
| 5240 | MzPzb - Metamorphosed mafic volcanic and sedimentary rocks (Mesozoic and(or) Paleozoic) |
| 5380 | Pzc - Togiak-Tikchik Complex, Black chert (lower Paleozoic) |
| 5730 | Pls - Togiak-Tikchik Complex, Limestone (Permian) |
| 5745 | Pcs - Togiak-Tikchik Complex, Clastic rocks (Permian?) |
| 5810 | Pv - Togiak-Tikchik Complex, Volcanic rocks (Permian?) |
| 6080 | TrPzrc - Togiak-Tikchik Complex, Rainbow chert (Triassic? to Paleozoic?) |
| 6412 | MDv - Togiak-Tikchik Complex, Greenstone and schist (Mississippian? and(or) Devonian?) |
| 6617 | Sab - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), Algal boundstone (Upper Silurian, Ludlovian and Pridolian) |
| 6620 | Sls - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), Lime mudstone (Upper Silurian, late Llandoverian to Wenlockian) |
| 7510 | Olss - Farewell terrane, Nixon Fork supbterrane of Decker and others (1994), Tcherskidium-bearing limestone (Upper Ordovician, Ashgillian) |
| 7515 | Os - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), Shale (Ordovician) |
| 7560 | Oab - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), Algal boundstone and lime mudstone (Lower Ordovician) |
| 7570 | Ols - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), Lime mudstone (Lower Ordovician) |
| 8014 | Cls - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), Limestone (Middle Cambrian) |
| 8015 | Cs - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), Clastic and carbonate rocks (Lower Cambrian) |
| 8340 | DZn - Farewell terrane, Nixon Fork subterrane of Decker and others (1994), undivided (Devonian(?) to Proterozoic) |
| 9120 | Zs - Dolostone, limestone, orhtquartzite, and minor chert (Neoproterzoic?) |
ALT - hydrothermal alteration ALT-SER - sericitic hydrothermal alteration HFS - contatct metamorphism, hornfels Q - queried unit
| Value | Definition |
|---|---|
| DI002 | Platt, J.N., and Muller, E.H., 1957?, Photogeologic map of the Dillingham quadrangle: U.S. Geological Survey, unpublished manuscript map. |
| DI003 | Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, scale 1:250,000, 2 sheets. (covers only extreme west edge of quadrangle) |
| DI005 | Wilson, F.H., Blodgett, R.B., Blome, C.D., Mohadjer, Solmaz, Preller, C.C., Klimasauskas, E.P., Gamble, B.M., and Coonrad, W.L., in prep. Reconnaissance bedrock geologic map for the northern Alaska Peninsula area, southwest Alaska; including the Dillingham, Iliamna, Lake Clark, Taylor Mountains and the western part of the Kenai and Seldovia 1:250,000-scale quadrangles: U.S. Geological Survey Scientific Investigations Map SIM-????, pamphlet, 111 ms. p., 2 sheets, scale 1:350,000. |
| DI007 | Hoare, J.M., Coonrad, W.L., Condon, W.H., various dates (1953 to 1975), unpublished field notes. |
| DI009 | Wilson, F.H., Hudson, T.L., Grybeck, Donald, Stoesser, D.B., Preller, C.C., Bickerstaff, Damon, Labay, Keith, and Miller, M.L., 2003, Preliminary geologic map of the northeast Dillingham quadrangle (D-1, D-2, C-1, and C-2) Alaska: U.S. Geological Survey Open-File Report 03-105, 13 p., scale 1:100,000. |
| IL002 | Detterman, R.L., and Reed, B.L., 1980, Stratigraphy, structure, and economic geology of the Iliamna quadrangle, Alaska: U.S. Geological Survey Bulletin 1368-B, 86 p., 1 sheet, scale 1:250,000. |
| IL003 | Detterman, R.L., and Reed, B.L., 1973, Surficial deposits of the Iliamna quadrangle, Alaska: U.S. Geological Survey Bulletin 1368-A, 64 p., 1 plate, scale 1:250,000. |
| IL006 | Wilson, F.H., Blodgett, R.B., Blome, C.D., Mohadjer, Solmaz, Preller, C.C., Klimasauskas, E.P., Gamble, B.M., and Coonrad, W.L., in prep., Reconnaissance bedrock geologic map for the northern Alaska Peninsula area, southwest Alaska; including the Dillingham, Iliamna, Lake Clark, Taylor Mountains and the western part of the Kenai and Seldovia 1:250,000-scale quadrangles: U.S. Geological Survey Scientific Investigations Map SIM-????, pamphlet, 111 ms. p., 2 sheets, scale 1:350,000. |
| IL007 | Detterman, R.L., and Hartsock, J.K., 1966, Geology of the Iniskin-Tuxedni region, Alaska: U.S. Geological Survey Professional Paper 512, 78 p., 6 plates, map, scale 1:63,630. |
| IL008 | Waythomas, C.F., and Miller, T.P., 1999, Preliminary volcano- hazard assessment for Iliamna Volcano: U.S. Geological Survey Open-File Report 99-373, 31 p., 1 plate. |
| IL009 | Bouley, B.A., St. George, Phil, and Wetherbee, P.K., 1995, Geology and discovery at Pebble Copper, a copper-gold porphyry system in southwest Alaska, in Porphyry deposits of the northwest Cordillera of North America: Canadian Institute of Mining Metallurgy, and Petroleum Special Volume 46, p. 422-435. |
| KN002 | Magoon, L.B., Adkison, W.L., and Egbert, R.M., 1976, Map showing geology, wildcat wells, Tertiary plant localities, K-Ar age dates, and petroleum operations, Cook Inlet area, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-1019, scale 1:250,000, 3 sheets. |
| KN003 | Bradley, D.C., and Wilson, F.H., 2000, Reconnaissance bedrock geology of the southeastern part of the Kenai quadrangle, Alaska, in Kelley, K.D., and Gough, L.P., eds., Geologic Studies in Alaska: U.S. Geological Survey Professional Paper 1615, p. 59-64. |
| KN005 | Detterman, R.L., and Hartsock, J.K., 1966, Geology of the Iniskin-Tuxedni region, Alaska: U.S. Geological Survey Professional Paper 512, 78 p., 6 plates, map scale 1:63,360. |
| KN006 | Riehle, J.R., and Emmel, K.S., 1980, Photointerpretation map of the surficial geology, Polly Creek to Mac Arthur River, Cook Inlet, Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 64, 2 sheets, scale 1:63,360. |
| KN008 | Wilson, F.H., Blodgett, R.B., Blome, C.D., Mohadjer, Solmaz, Preller, C.C., Klimasauskas, E.P., Gamble, B.M., and Coonrad, W.L., in prep., Reconnaissance bedrock geologic map for the northern Alaska Peninsula area, southwest Alaska: including the Dillingham, Iliamna, Lake Clark, Taylor Mountains and the western part of the Kenai and Seldovia 1:250,000-scale quadrangles: U.S. Geological Survey Scientific Investigations Map SIM-????, pamphlet, 111 ms p., 2 sheets, scale 1:350,000. |
| KN009 | Reed. B.L., Lanphere, M.A., and Miller, T.P., 1992, Double Glacier volcano, a 'new' Quaternary volcano in the eastern Aleutian volcanic arc: Bulletin of Volcanology, v. 54, p. 631-637. |
| KN011 | Waythomas, C.F., and Miller, T.P., 1999, Preliminary volcano-hazard assessment for Iliamna Volcano: U.S. Geological Survey Open-File Report 99-373, 31 p., 1 plate. |
| KN012 | Reed. B.L., Miesch, A.T., and Lanphere, M.A., 1983, Plutonic rocks of Jurassic age in the Alaska-Aleutian Range batholith: Chemical variations and polarity: Geological Society of America Bulletin, v. 94, p. 1232-1240. |
| LC002 | Nelson, W.H., Carlson, Christine, and Case, J.E., 1983, Geologic map of the Lake Clark quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1114A, scale 1:250,000. |
| LC003 | Wallace, W.K., Hanks, C.L., and Rogers, J.F., 1989, The southern Kahiltna terrane: implications for the tectonic evolution of southwestern Alaska: Geological Society of America Bulletin, v. 101, p., 1389-1407. |
| LC005 | Wilson, F.H., Blodgett, R.B., Blome, C.D., Mohadjer, Solmaz, Preller, C.C., Klimasauskas, E.P., Gamble, B.M., and Coonrad, W.L., in prep., Reconnaissance bedrock geologic map for the northern Alaska Peninsula area, southwest Alaska; including the Dillingham, Iliamna, Lake Clark, Taylor Mountains and the western part of the Kenai and Seldovia 1:250,000-scale quadrangles: U.S. Geological Survey Scientific Investigations Map SIM-????, pamphlet, 111 ms. p., 2 sheets, scale 1:350,000. |
| LC006 | Wallace, W.K., 2002, Unpublished geologic mapping dated 1985, done while at ARCO, made available July 2002. |
| LC007 | Detterman, R.L., and Hartsock, J.K., 1966, Geology of the Iniskin-Tuxedni region, Alaska: U.S. Geological Survey Professional Paper 512, 78 p., 6 plates, map scale 1:63,360. |
| LC010 | Waythomas, C.F., and Miller, T.P., 1999, Preliminary volcano- hazard assessment for Iliamna Volcano: U.S. Geological Survey Open-File Report 99-373, 31 p., 1 plate. |
| LC011 | Reed, B.L., Miesch, A.T., and Lanphere, M.A., 1983, Plutonic rocks of Jurassic age in the Alaska-Aleutian Range batholith: Chemical variations and polarity: Geological Society of America Bulletin, v. 94, p. 1232, 1240. |
| LC012 | Eakins, G.R., Gilbert, W.G., and Bundtzen, T.K., 1978, Preliminary bedrock geology and mineral resource potential of west-central Lake Clark quadrangle of Alaska: Alaska Division of Geological and Geophysical Surveys Alaska Open-File Report 118, 15, p., 2 plates, scale 1:125,000. |
| SV002 | Bradley, D.C., Kusky, T.M., Haeussler, P.J., Karl, S.M., and Donley, D.T., 1999, Geology of the Seldovia quadrangle: U.S. Geological Survey Open-File Report 99-18, scale 1:250,000. |
| SV004 | Detterman, R.L., and Hartsock, J.K., 1966, Geology of the Iniskin-Tuxedni region, Alaska: U.S. Geological Survey Professional Paper 512, 78 p., 6 plates, map scale 1:63,360. |
| TA002 | Platt, J.N., 1957?, Photogeologic map of the Taylor Mountains quadrangle: U.S. Geological Survey, unpublished manuscript map. |
| TA003 | Reifenstuhl, R.R., Decker, John, and Coonrad, W.L., 1985, Compilation of geologic data from the Taylor Mountains D-8 quadrangle, southwestern Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 85-4, scale 1:63,360, 1 sheet. |
| TA006 | Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, scale 1:250,000, 2 sheets (covers only extreme southwest corner of quadrangle) |
| TA007 | Blodgett, R.B., and Wilson, F.H., 2001, Reconnaissance geology north of the Hoholitna River, Taylor Mountains D-1 1:63,360- scale quadrangle, southwestern Alaska, in Gough, L.P., and Wilson, F.H., eds., Geologic studies in Alaska: U.S. Geological Survey Professional Paper, 1633, p. 73-82. |
| TA008 | Blodgett, R.B., Wilson, F.H., Miller, M.L., and Blome, C.D., 2000-2005, unpublished field mapping, Taylor Mountains D-2 and D-3 quadrangles. |
| TA009 | Clark, A.L., Condon, W.H., Hoare, J.M., and Sorg, D.H., 1979, Analyses of rock and stream-sediment samples from the Taylor Mountains A-6 and southern part of Taylor Mountains B-6 quadrangles, Alaska: U.S. Geological Survey Open-File Report (437), 94 p., 1 sheet, scale 1:63,360. |
| TA010 | Clark, A.L., Condon, W.H., Hoare, J.M., and Sorg, D.H., 1970, Analyses of rock and stream sediment samples from the northern part of the Taylor Mountains B-6 quadrangle, Alaska: U.S. Geological Survey Open-File Report (438), 89 p., 1 sheet, scale 1:63,360. |
| TA011 | Clark, A.L., Condon, W.H., Hoare, J.M., and Sorg, D.H., 1970, Analyses of rock and stream-sediment samples from the Taylor Mountains C-8 quadrangle, Alaska: U.S. Geological Survey Open-File Report (429), 110 pl, 1 sheet, scale 1:63,360. |
| TA014 | Burleigh, R.E., 1991, Evaluation of the tin-tungsten greisen mineralization and associated granite at Sleitat Mountain, southwestern Alaska: U.S. Bureau of Mines, Open-file Report 35-91, 41 p. |
| TA015 | Wilson, F.H., Blodgett, R.B., Blome, C.D., Mohadjer, Solmaz, Preller, C.C., Klimasauskas, E.P., Gamble, B.M., and Coonrad, W.L., in prep., Reconnaissance bedrock geologic map for the northern Alaska Peninsula area, southwest Alaska; including Dillingham, Iliamna, Lake Clark, Taylor Mountains and the western part of the Kenai and Seldovia 1:250,000-scale quandrangles: U.S. Geological Survey Scientific Investigations Map SIM-????, pamphlet, 111 ms. p., 2 sheets, scale 1:350,000. |
| TA017 | Cady, W.M., Wallace, R.E., Hoare, J.M., and Webber, E.J., 1955, The central Kuskokwim region, Alaska: U.S. Geological Survey Professional Paper 268, 132 p., 9 plates including 1 map, scale about 1:500,000. |
| TA019 | Hoare, J.M., and Condon, W.H., 1969-1970, Geologic field notes and mapping in the western Taylor Mountains quadrangle: unpublished data synthesized by Ed Klimasauskas and F.H. Wilson. |
| TA020 | Sainsbury, C.L., and MacKevett, E.M., Jr., 1965, Quicksilver deposits of southwestern Alaska: U.S. Geological Survey Bulletin 1187, 89 p., 8 plates. |
| Value | Definition |
|---|---|
| 0 | hidden line |
| 1 | Stratigraphic or intrusive contact, location certain |
| 2 | Stratigraphic or intrusive contact, location approximate |
| 3 | Stratigraphic or intrusive contact, location inferred, queried |
| 4 | Normal fault, location certain; if ARC-PARA1 = 1, then upthrown side on right from origin |
| 5 | Normal fault, location approximate; if ARC-PARA1 = 1, then upthrown side is on right from origin |
| 6 | Normal fault, location inferred or queried; if ARC-PARA1 = 1, then upthrown side is on right from origin |
| 7 | Shoreline or riverbank |
| 8 | Internal contact or phase change; no symbol drawn |
| 9 | Boundary of altered zone or hornfels; no symbol drawn |
| 10 | Thrust fault, location certain, teeth on right from origin |
| 11 | Thrust fault, location approximate; teeth on right from origin |
| 12 | Thrust fault, location inferred, queried; teeth on right from origin |
| 13 | Moraine or till margin (scour) on bedrock |
| 15 | Ice contact |
| 30 | Fault, sense of displacement uncertain, location certain |
| 31 | Fault, sense of displacement uncertain, location approximate |
| 35 | High-angle reverse fault, location certain, teeth on right from origin; angle of thrusting added to ARC-PARA1 if known |
| 36 | High-angle reverse fault, location approximate, teeth on right from origin; angle of thrusting added to ARC-PARA1 if known |
| 50 | Dikes and sills |
| 51 | Concealed contact |
| 52 | Concealed normal fault |
| 53 | Concealed thrust fault |
| 60 | Concealed fault, displacement uncertain |
| 93 | Lineament |
| 99 | Bounding line of coverage |
This data set was prepared by Frederic H. Wilson (USGS), Solmaz Mohadjer (contractor), Keith A. Labay (contractor), and Nora Shew (USGS)
U.S. Geological Survey
c/o Frederic H. Wilson
Geologist
4200 University Drive
Anchorage, Alaska 99508-4667
U.S.A.
907-786-7448 (voice)
fwilson@usgs.gov
This data set represents part of a systematic effort to release geologic map data for the United States in a uniform manner. Geologic data in this series has been compiled from a wide variety of sources, published and unpublished, ranging from state and regional geologic maps to large- scale field mapping.
Person responsible for change:
U.S. Geological Survey
c/o Frederic H. Wilson
Geologist
4200 University Drive
Anchorage, Alaska 99508-4667
U.S.A.
907-786-7448 (voice)
fwilson@usgs.gov
There were many types of source materials, of varying scale, used to compile this data set. Sources include previously published maps, unpublished mapping, air photo interpretation, and limited new field mapping. The dates of the mapping range from the present to the 1930's. Vector features were mostly digitized on a large digitizing tablet. Vector and polygon attributes were assigned based on the original source. The digital data has been checked, and the geologic map has been technically reviewed and edited.
This data is presented for use at a nominal scale of 1:350,000, although some sources were from 1:250,000- and 1:63,360 scale mapping.
The complete data set consists of 11 different GIS coverages, six geology coverages and 5 lineation coverages. There is also an associated relational database of geologic units. Each coverage has the extent of a 1:250,000 scale quadrangle. A graphic representation of the database and a report with complete geologic unit descriptions is provided in .pdf format.
Each geology coverage is a network coverage containing attributed arcs and polygons. Each polygon has a coded attribute designating the mapped geologic unit. Faults, stratigraphic contacts, and other linear features are represented as arcs. When a fault is also a stratigraphic contact, only a single arc is present. Dangling arcs may be present (faults, dike, etc.)
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- None. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data.
U.S. Geological Survey
MS 902 Box 25286 Denver Federal Center
Lakewood, CO 80225
USA
1-888-ASK-USGS (voice)
Open-File Report 2006-1303
This world-wide web publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government of any agency thereof.
| Data format: | ARCE |
|---|---|
| Network links: |
<http://pubs.usgs.gov/of/2006/1303/> |
U.S. Geological Survey
c/o Nora Shew
4200 University Drive
Anchorage, Alaska 99508
U.S.A.
907-786-7445 (voice)
nshew@usgs.gov