Entity_Type_Label: Coal_unit
Entity_Type_Definition:
Created from shapefile coalunit_poly.shp in publication Merritt, R.D., and
Hawley, C.C., 1986, Map of Alaska's coal resources: Alaska Division of
Geological and Geophysical Surveys Special Report 37, scale 1:2,500,000.
Shapefile was converted to a geodatabase feature class and 2 fields, age and
selection, were added.
Entity_Type_Definition_Source:
Alaska Division of Geological and Geophysical Surveys Special
Report 37 and this data set.
Attribute_Label: RANK
Attribute_Definition: Coal rank is the classification or grade of coal.
Attribute_Definition_Source: Alaska Division of Geological and Geophysical Surveys (ADGGS)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No rank has been assigned.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
Anthracite or semianthracite beds of mineable thickness - minimum 14 inches.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: Anthracite or semianthracite - resource potential less certain.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: Bituminous coal beds of mineable thickness - minimum 14 inches.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: Bituminous coal - resource potential less certain.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition:
Subbituminous coal underlain by bituminous coal - resource potential undefined.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 6
Enumerated_Domain_Value_Definition:
Subbituminous coal beds of mineable thickness - minimum 30 inches.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 7
Enumerated_Domain_Value_Definition: Subbituminous coal - resource potential less certain.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 8
Enumerated_Domain_Value_Definition:
Lignite underlain by subbituminous coal - resource potential undefined.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 9
Enumerated_Domain_Value_Definition: Lignite beds of mineable thickness - minimum 30 inches.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 10
Enumerated_Domain_Value_Definition: Lignite - resource potential less certain.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Label: UNIT
Attribute_Definition: Geologic unit
Attribute_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kc
Enumerated_Domain_Value_Definition:
Northern Alaska Province, mainly Corwin Formation of Nanushuk Group
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kcb
Enumerated_Domain_Value_Definition:
Yukon-Koyukuk Province, continental rocks, includes upper member
Bergman Goup and Kaltak and Nulato Formations
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kcc
Enumerated_Domain_Value_Definition: Yukon-Koyukuk Province, continental rocks
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kco
Enumerated_Domain_Value_Definition: Northern Alaska Province, Colville Group
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kcv
Enumerated_Domain_Value_Definition:
Alaska Peninsula Province, Chignik Formation, Coal Valley Member
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kk
Enumerated_Domain_Value_Definition:
Southwestern Alaska, continental to littoral marine rocks, includes Kuskokwim Group
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kms
Enumerated_Domain_Value_Definition: Northern Alaska Province, marine sedimentary rocks
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mk
Enumerated_Domain_Value_Definition: Northern Alaska Province, Kapaloak Formation of Lisburne Group
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: QTu
Enumerated_Domain_Value_Definition:
Nenana Province, Nenana Gravel and surficial deposits, undivided
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tar
Enumerated_Domain_Value_Definition: Cook Inlet-Susitna Province, Arkose Ridge Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tbl
Enumerated_Domain_Value_Definition:
Alaska Peninsula Province, Bear Lake Formation, Unga Conglomerate Member
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tbs
Enumerated_Domain_Value_Definition:
Cook Inlet-Susitna Province, Beluga and Sterling Formations, undivided
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tc
Enumerated_Domain_Value_Definition:
Cook Inlet-Susistna Province, Chickaloon Formation, lower member
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tcb
Enumerated_Domain_Value_Definition: Nenana Province, continental rocks undivided
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tcbu
Enumerated_Domain_Value_Definition: Cook Inlet-Susitna Province, continental rocks, undivided
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tccb
Enumerated_Domain_Value_Definition: Upper Yukon Province, continental rocks
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tcl
Enumerated_Domain_Value_Definition: Southeastern Alaska, continental rocks
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tcls
Enumerated_Domain_Value_Definition: Seward Peninsula Province, continental rocks
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tcu
Enumerated_Domain_Value_Definition: Cook Inlet-Susitna Province, Chickaloon Formation, upper member
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tf
Enumerated_Domain_Value_Definition: Other coal-bearing areas, Frederika Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tga
Enumerated_Domain_Value_Definition: Other coal-bearing areas, Gakona Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Thc
Enumerated_Domain_Value_Definition: Nenana Province, Healy Creek Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tk
Enumerated_Domain_Value_Definition: Gulf of Alaska Province, Kushtaka Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tkc
Enumerated_Domain_Value_Definition: Gulf of Alaska Province, Kulthieth Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: TKcb
Enumerated_Domain_Value_Definition: Upper Yukon Province, continental rocks
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tku
Enumerated_Domain_Value_Definition:
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.
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tls
Enumerated_Domain_Value_Definition: Cook Inlet-Susitna Province, continental rocks
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tsl
Enumerated_Domain_Value_Definition: Northern Alaska Province, Sagavanirktok Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tt
Enumerated_Domain_Value_Definition: Cook Inlet-Susitna Province, Tyonek Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tts
Enumerated_Domain_Value_Definition:
Cook Inlet-Susitna Province, Tyonek Formation, Sandstone and Conglomerate
Members
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ttt
Enumerated_Domain_Value_Definition:
Cook Inlet-Susitna Province, Tyonek and Tsadaka Formations, undivided
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tu
Enumerated_Domain_Value_Definition: Cook Inlet-Susitna Province, Kenai Group, undivided
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tuu
Enumerated_Domain_Value_Definition:
Nenana Province, Usibelli Group (includes Grubstake, Lignite Creek, Suntrana,
Sanctuary, and Healy Creek Formations)
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Twf
Enumerated_Domain_Value_Definition: Cook Inlet-Susitna Province, West Foreland Formation
Enumerated_Domain_Value_Definition_Source: ADGGS
Attribute_Label: selection
Attribute_Definition:
Field created to base age query for sandstone uranium HUC analysis.
Attribute_Definition_Source: this data set
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: yes
Enumerated_Domain_Value_Definition: Geologic unit is Tertiary or Upper Cretaceous in age.
Enumerated_Domain_Value_Definition_Source: this data set
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: no
Enumerated_Domain_Value_Definition: Geologic age is not of Tertiary or Upper Cretaceous age.
Enumerated_Domain_Value_Definition_Source: this data set