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Isopachs of total net coal in A-D coal zones, Yampa Coal Field (yam*thkg)

Dates

Publication Date
Start Date
1997
End Date
1998
Release Date
2000

Citation

Johnson, E., Roberts, L., Brownfield, M.E., 2000, Isopachs of total net coal in A-D coal zones, Yampa Coal Field (yam*thkg): U.S. Geological Survey data release, https://doi.org/10.5066/P9BHYFME.

Summary

These are shapefiles and ARC/INFO polygon coverages showing the isopachs of total net coal in beds greater than or equal to 1.2' thick for the A, B, C, and D coal zones in the Williams Fork Formation, Yampa coal field, northwestern Colorado. YAMATHKG is for the A coal zone, YAMBTHKG is for the B coal zone, etc.

Contacts

Attached Files

Click on title to download individual files attached to this item.

yamthkg.jpg thumbnail 55.57 KB image/jpeg
Shapefile: yamathkg.zip
yamathkg.dbf 4.08 KB
yamathkg.prj 167 Bytes
yamathkg.sbn 564 Bytes
yamathkg.sbx 164 Bytes
yamathkg.shp 86.83 KB
yamathkg.shx 444 Bytes
Shapefile: yambthkg.zip
yambthkg.dbf 2.38 KB
yambthkg.prj 167 Bytes
yambthkg.sbn 348 Bytes
yambthkg.sbx 132 Bytes
yambthkg.shp 15.95 KB
yambthkg.shx 292 Bytes
Shapefile: yamcthkg.zip
yamcthkg.dbf 3.54 KB
yamcthkg.prj 167 Bytes
yamcthkg.sbn 516 Bytes
yamcthkg.sbx 164 Bytes
yamcthkg.shp 21.75 KB
yamcthkg.shx 396 Bytes
Shapefile: yamdthkg.zip
yamdthkg.dbf 2.56 KB
yamdthkg.prj 167 Bytes
yamdthkg.sbn 420 Bytes
yamdthkg.sbx 156 Bytes
yamdthkg.shp 16.7 KB
yamdthkg.shx 308 Bytes

Purpose

The Nation's coal resources are being reassessed by the USGS. This assessment identifies and characterizes the coal beds and coal zones that will provide the bulk of the nation's coal-derived energy during the next century. This assessment is different from previous large-scale USGS assessments because files and databases are being stored in a digital format and are being analyzed using a Geographic Information System (GIS).

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9BHYFME

Shapefile Extension

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