akcoal_poly boundary of coal district or contact showing limit of geologic unit coalbasin_poly boundary of coal basins and prospective coal basins coalfield_poly boundary of coal fields coalpoint_point location of coal occurrence of unknown extent coalunit_poly boundary of coal ranks
Merritt, R.D., and Hawley, C.C., 1986, Map of Alaska's coal resources: Special Report SR 37, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK.Online Links:
The map projection used is Albers Conical Equal Area.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.004096
Ordinates (y-coordinates) are specified to the nearest 0.004096
Planar coordinates are specified in meters
The horizontal datum used is D_Clarke_1866.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.978698.
The values represent the formal names of known coal districts in Alaska.
The values represent the formal names of known coal basins in Alaska.
| Value | Definition |
|---|---|
| 0 | Coal basin |
| 1 | Prospective coal basin |
The values represent the formal names of known coal fields in Alaska.
| Value | Definition |
|---|---|
| K | Cretaceous |
| M | Mississippian |
| T | Tertiary |
| TK | Very close to the Tertiary/Cretaceous boundary |
| TK(?) | Unknown, Tertiary or Cretaceous |
| Value | Definition |
|---|---|
| 2 | Anthracite or semianthracite - Resource potential less certain |
| 4 | Bituminous coal - Resource potential less certain |
| 7 | Subbituminous coal - Resource potential less certain |
| 10 | Lignite - Resource potential less certain |
| Range of values | |
|---|---|
| Minimum: | -172.0 |
| Maximum: | -130.0 |
| Units: | decimal degrees |
| Range of values | |
|---|---|
| Minimum: | 52.0 |
| Maximum: | 71.5 |
| Units: | decimal degrees |
| Value | Definition |
|---|---|
| 0 | No rank has been assigned |
| 1 | Anthracite or semianthracite beds of mineable thickness - Minimum 14 in. |
| 2 | Anthracite or semianthracite - Resource potential less certain |
| 3 | Bituminous coal beds of mineable thickness - Minimum 14 in. |
| 4 | Bituminous coal - Resource potential less certain |
| 5 | Subbituminous coal underlain by bituminous coal - Resource potential undefined |
| 6 | Subbituminous coal beds of mineable thickness - Minimum 30 in. |
| 7 | Subbituminous coal - Resource potential less certain |
| 8 | Lignite underlain by subbituminous coal - Resource potential undefined |
| 9 | Lignite beds of mineable thickness - Minimum 30 in. |
| 10 | Lignite - Resource potential less certain |
| Value | Definition |
|---|---|
| Tsl | (Northern Alaska Province) Sagavanirktok Formation |
| Kco | (Northern Alaska Province) Colville Group |
| Kc | (Northern Alaska Province) Mainly Corwin Formation of Nanushuk Group |
| Kms | (Northern Alaska Province) Marine sedimentary rocks |
| Mk | (Northern Alaska Province) Kapaloak Formation of Lisburne Group |
| Tls | (Cook Inlet - Susitna Province) Continental rocks |
| Tbs | (Cook Inlet - Susitna Province) Beluga and Sterling Formations, undivided |
| Tcbu | (Cook Inlet - Susitna Province) Continental rocks, undivided |
| Tu | (Cook Inlet - Susitna Province) Kenai Group, undivided |
| Tt | (Cook Inlet - Susitna Province) Tyonek Formation |
| Tts | (Cook Inlet - Susitna Province) Tyonek Formation, Sandstone and Conglomerate Members |
| Ttt | (Cook Inlet - Susitna Province) Tyonek and Tsadaka Formations, undivided |
| Twf | (Cook Inlet - Susitna Province) West Foreland Formation |
| Tcu | (Cook Inlet - Susitna Province) Chickaloon Formation, upper member |
| Tc | (Cook Inlet - Susitna Province) Chickaloon Formation, lower member |
| Tar | (Cook Inlet - Susitna Province) Arkose Ridge Formation |
| TKu | (Cook Inlet - Susitna Province) Sedimentary rocks, undivided |
| QTu | (Nenana Province) Nenana Gravel and surficial deposits, undivided |
| Tcb | (Nenana Province) Continental rocks, undivided |
| Thc | (Nenana Province) Healy Creak Formation |
| Tuu | (Nenana Province) Usibelli Group (includes Grubstake, Lignite Creek, Suntrana, Sanctuary, and Healy Creek Formations) |
| Tbl | (Alaska Peninsula Province) Bear Lake Formation, Unga Conglomerate Member |
| Kcv | (Alaska Peninsula Province) Chignik Formation, Coal Valley Member |
| Tk | (Gulf of Alaska Province) Kushtaka Formation |
| Tkc | (Gulf of Alaska Province) Kulthieth Formation |
| Kcc | (Yukon-Koyukuk Province) Continental rocks |
| Kcb | (Yukon-Koyukuk Province) Continental rocks, includes upper member Bergman Group and Kaltag and Nulato Formations |
| Tccb | (Upper Yukon Province) Continental rocks |
| TKcb | (Upper Yukon Province) Continental rocks |
| Tcls | (Seward Peninsula Province) Continental rocks |
| Tf | (Other Coal-bearing Areas) Frederika Formation |
| Tga | (Other Coal-bearing Areas) Gakona Formation |
| Tcl | (Southeastern Alaska) Continental rocks |
| Kk | (Southwestern Alaska) Continental to littoral marine rocks, includes Kuskokwim Group |
In addition to help and encouragement from former State Geologist Ross G. Schaff and the staff of the Division of Mining and Geological and Geophysical Surveys (DMGGS), the map was reviewed and improved by R.B. Sanders (consulting geologist, Anchorage); G.D. Stricker (U.S. Geological Survey, Denver); P.D. Rao (University of Alaska Mineral Industry Research Laboratory, Fairbanks); S.E. Rawlinson and G.R. Eakins (DMGGS); D.M. Triplehorn (University of Alaska Department of Geology-Geophysics, Fairbanks); John F.M. Sims (Usibelli Coal Mine; Alaska Coal Association); Kurt Humphrey (Cook Inlet Region, Inc.); and Pio Park (Chugach Alaska Native Corporation). J.E. Callahan contributed information on the Northern Alaska province; J.V. Tucker (Diamond Alaska Coal Company), C.E. McFarland, and B.J.G. Patsch (Placer U.S. Inc.) reviewed the discussion of the Cook Inlet - Susitna province; and D.E. Germer (Rocky Mountain Energy) extensively revised the section on the Matanuska field. Clyde Wahrhaftig (U.S. Geological Survey) contributed information for the section on the Nenana province; C.P. Boddy, M.D. Usibelli, and S.C. Wilbur (Usibelli Coal Mine) also contributed to that discussion. J.C. Barker (U.S. Bureau of Mines) assisted with the Upper Yukon province. V.L. Reger and C.L. Daniels (DMGGS) edited the report. Cartography by A.L. Schnell and G.M. Laird with phototypesetting by R.A. Mann (DMGGS).
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The data provides consultants, planners, and resource managers with information on the location of coal resources. Coal resources in numerous smaller coal fields around the state are less well defined, but some may constitute a viable local energy resource. Alaska's coal resources are sufficient for domestic use and export for at least the next century and probably for two or three centuries based on current consumption rates.
Sanders, R.B., 1983, Alaska's coal resources: an international view:.This is part of the following larger work.
Sanders, R.B., 1983, Transactions of the Circum-Pacific Energy and Mineral Resources Conference: Proceedings 1982, American Association of Petroleum Geologists, Honolulu, HI, USA.
Mull, C.G., 1985, Guidebook to bedrock geology along the Dalton Highway, Yukon River to Prudhoe Bay, Alaska: None None, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.
Barnes, F.F., 1966, Geology and coal resources of the Beluga-Yentna region, Alaska: USGS Bulletin 1202-C, United States Geological Survey, Reston, VA, USA.Online Links:
Magoon, L.B., Adkison, W.L., and Egbert, R.M., 1976, Map showing geology, wildcat wells, Tertiary plant fossil localities, K-Ar age dates, and petroleum operations, Cook Inlet area, Alaska: USGS Misc. Investigations I-1019, United States Geological Survey, Reston, VA, USA.Online Links:
Ramsey, J.P., 1981, Geology, coal resources, and mining plan for the Chuitna River field, Alaska:.This is part of the following larger work.
Rao, P.D. (ed.), and Wolff, E.N. (ed.), 1981, Focus on Alaska's coal '80: Report 50, University of Alaska Mineral Industry Research Laboratory, Fairbanks, AK, USA.
Bechtel, Inc., 1980, Executive summary, preliminary feasibility study, coal export program, Bass-Hunt-Wilson coal leases, Chuitna River field, Alaska: None None, Bass-Hunt-Wilson Venture, San Francisco, CA, USA.
Wahrhaftig, Clyde, 1970, Geologic map of the Fairbanks A-2 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 808, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, 1970, Geologic map of the Fairbanks A-3 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 809, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, 1970, Geologic map of the Fairbanks A-4 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 810, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, 1970, Geologic map of the Fairbanks A-5 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 811, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, 1970, Geologic map of the Healy D-2 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 804, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, 1970, Geologic map of the Healy D-3 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 805, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, 1970, Geologic map of the Healy D-4 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 806, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, 1970, Geologic map of the Healy D-5 Quadrangle, Alaska: USGS Geologic Quadrangle Maps GQ 807, United States Geological Survey, Reston, VA, USA.Online Links:
Wahrhaftig, Clyde, Wolfe, J.A., Leopold, E.B., and Lanphere, M.A., 1969, The coal-bearing group of the Nenana coal field, Alaska: USGS Bulletin 1274-D, United States Geological Survey, Reston, VA, USA.Online Links:
Affolter, R.H., Simon, F.O., and Stricker, G.D., 1981, Analysis of coal samples from the Healy, Kenai, Seldovia, and Utukok River Quadrangles, Alaska:.This is part of the following larger work.
Rao, P.D. (ed.), and Wolff, E.N. (ed.), 1981, Focus on Alaska's coal '80: Report 50, University of Alaska Mineral Industry Research Laboratory, Fairbanks, AK, USA.
Rao, P.D., and Wolff, E.N., 1981, Petrographic, mineralogical and chemical characterization of certain Alaskan coals and washability products:.This is part of the following larger work.
Rao, P.D. (ed.), and Wolff, E.N. (ed.), 1981, Focus on Alaska's coal '80: Report 50, University of Alaska Mineral Industry Research Laboratory, Fairbanks, AK, USA.
Conwell, C.N., and Triplehorn, D.M., 1978, Herendeen Bay - Chignik coals, southern Alaska Peninsula: Special Report SR 8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Rao, P.D., and Wolff, E.N., 1980, Characterization and evaluation of washability of Alaskan coals; selected selected seams from northern Alaska, Broad Pass, Little Tonzona, Tramway Bar, Beluga, Yentna, Kenai, and Nenana coal fields: Final Technical Report DOE/ET/13350/-T2, United States Department of Energy, Washington, D.C., USA.
Alaska Division of Geological & Geophysical Surveys, 1990, Alaska's high-rank coals: Information Circular IC 33, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Schaff, R.G., and Merritt, R.D., 1983, Alaska's coal provinces and resources: Public Data File PDF 83-6, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Merritt, R.D., 1985, Alaska coal summary - 1983: Public Data File PDF 85-21, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Merritt, R.D., 1985, Alaska's coal data base: explanation guide to accompany map of Alaska's coal resources: Public Data File PDF 85-22, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
McGee, D.L., and Emmel, K.S., 1986, Alaska coal resources: Public Data File PDF 86-19, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Merritt, R.D., 1986, Chronicle of Alaska coal-mining history: Public Data File PDF 86-66, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Merritt, R.D., 1986, Alaska coal fields and seams: Public Data File PDF 86-67, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Johnson, K.J., 1986, DGGS Alaska coal regions database: Public Data File PDF 86-87, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Geologic data were digitized from the scanned map in 1991.
Unknown.
This dataset includes geospatial information about boundaries of coal fields, coal occurrences of unknown extent, boundaries of coal basins, and coal rank boundaries.
Polygon topology present and clean on appropriate data. Other data are line, point, or annotation data and do not require topologic relationships.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This report, map, and/or data set are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
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- Any hard copies or published data sets utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these data sets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.
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Special Report 37
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