Online Links:
Value | Definition |
---|---|
0 | No rank has been assigned. |
1 | Anthracite or semianthracite beds of mineable thickness - minimum 14 inches. |
2 | Anthracite or semianthracite - resource potential less certain. |
3 | Bituminous coal beds of mineable thickness - minimum 14 inches. |
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 inches. |
7 | Subbituminous coal - resource potential less certain. |
8 | Lignite underlain by subbituminous coal - resource potential undefined. |
9 | Lignite beds of mineable thickness - minimum 30 inches. |
10 | Lignite - resource potential less certain. |
Value | Definition |
---|---|
Kc | Northern Alaska Province, mainly Corwin Formation of Nanushuk Group |
Kcb | Yukon-Koyukuk Province, continental rocks, includes upper member Bergman Goup and Kaltak and Nulato Formations |
Kcc | Yukon-Koyukuk Province, continental rocks |
Kco | Northern Alaska Province, Colville Group |
Kcv | Alaska Peninsula Province, Chignik Formation, Coal Valley Member |
Kk | Southwestern Alaska, continental to littoral marine rocks, includes Kuskokwim Group |
Kms | Northern Alaska Province, marine sedimentary rocks |
Mk | Northern Alaska Province, Kapaloak Formation of Lisburne Group |
QTu | Nenana Province, Nenana Gravel and surficial deposits, undivided |
Tar | Cook Inlet-Susitna Province, Arkose Ridge Formation |
Tbl | Alaska Peninsula Province, Bear Lake Formation, Unga Conglomerate Member |
Tbs | Cook Inlet-Susitna Province, Beluga and Sterling Formations, undivided |
Tc | Cook Inlet-Susistna Province, Chickaloon Formation, lower member |
Tcb | Nenana Province, continental rocks undivided |
Tcbu | Cook Inlet-Susitna Province, continental rocks, undivided |
Tccb | Upper Yukon Province, continental rocks |
Tcl | Southeastern Alaska, continental rocks |
Tcls | Seward Peninsula Province, continental rocks |
Tcu | Cook Inlet-Susitna Province, Chickaloon Formation, upper member |
Tf | Other coal-bearing areas, Frederika Formation |
Tga | Other coal-bearing areas, Gakona Formation |
Thc | Nenana Province, Healy Creek Formation |
Tk | Gulf of Alaska Province, Kushtaka Formation |
Tkc | Gulf of Alaska Province, Kulthieth Formation |
TKcb | Upper Yukon Province, continental rocks |
Tku | Cook Inlet-Susitna Province, sedimentary rocks, undivided. The label is Tku in polygon attribute table, but TKu on map sheet. The unit age is given as Tertiary-Cretaceous on the map sheet. |
Tls | Cook Inlet-Susitna Province, continental rocks |
Tsl | Northern Alaska Province, Sagavanirktok Formation |
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 |
Tu | Cook Inlet-Susitna Province, Kenai Group, undivided |
Tuu | Nenana Province, Usibelli Group (includes Grubstake, Lignite Creek, Suntrana, Sanctuary, and Healy Creek Formations) |
Twf | Cook Inlet-Susitna Province, West Foreland Formation |
Value | Definition |
---|---|
yes | Geologic unit is Tertiary or Upper Cretaceous in age. |
no | Geologic age is not of Tertiary or Upper Cretaceous age. |
Value | Definition |
---|---|
yes | Geologic unit is described as coal-bearing in ADGGS Special Report 37. |
Nora Shew
The lithology data layers were created to provide rock type information to estimate the potential of mineral resources in the state of Alaska.
Are there legal restrictions on access or use of the data?Access_Constraints: None
Use_Constraints:None. Users are advised to read the metadata for the dataset thoroughly to understand appropriate use and data limitations.
This 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 or any agency thereof.
Data format: | ArcGIS geodatabase |
---|---|
Network links: |
http://dx.doi.org/10.3133/ofr20161191 |