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These are shapefiles and ARC/INFO coverages of coal fields and coal-bearing formations in the Colorado Plateau. These GIS layers were created by combining numerous ARC/INFO coverages created for the Colorado Plateau coal assessment. The coal field outlines are approximate boundaries based on criteria provided below under Data Quality Information, Process Steps. These coal field outlines may not overlap exactly with other published coal field boundaries or with criteria used in the geochemistry data. We used existing polygons taken from numerous digital geologic maps, as described in Process Steps, but did not use overburden cutoffs.
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These are shapefiles and final unioned polygon coverages used to calculate coal resources of the A through D coal zones, Yampa coal field, northwestern Colorado. Yamafing was used for the A coal zone, yambfing was used for the B coal zone, etc. Polygons that make up the final unioned polygons include counties, 7.5' quadrangles, townships, surface and coal ownership, leased areas, net coal thickness categories, and overburden categories. The final unioned coverage for each coal zone, was clipped by the resource boundary polygon of each coal zone. These polygons are described in the metadata files for the yam_bnd coverages.
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This is a polygon coverage of the structure contours of the Calico sequence boundary in the Kaiparowits Plateau, southern Utah. Sequence boundary elevations are based on 166 drill sites. The Calico sequence boundary occurs from 50-100 ft below the base of the John Henry Member, therefore an inferred elevation of the sequence boundary was used at numerous locations along the outcrop where the John Henry Member was mapped. The outside polygon defines the base of the coal-bearing Calico and A-sequences of the Straight Cliffs Formation east of 112 degrees of longitude. The northern boundary is delineated by the Paunsaugunt fault and volcanic rocks of Tertiary age.
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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 through G coal zones, Danforth Hills coal field. The coverage danathkg is the isopach coverage for the A coal zone; danbthkg is for the B coal zone, and so on.
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These are shapefiles and coverages of final unioned polygon coverages used to calculate coal resources of the Cameo/Fairfield coal group east of 107 deg 15' longitude, and the Cameo/Wheeler, South Canyon, and Coal Ridge coal zones west of 107 deg 15' longitude in the southern Piceance Basin, northwestern Colorado. Pscbfing was used for the area east of 107 deg 15' longitude; pscwfing was used for the Cameo/Wheeler coal zone; psscfing was used for the South Canyon coal zone; pscrfing was used for the Coal Ridge coal zone. Polygons that make up the final unioned polygons include counties, 7.5' quadrangles, townships, surface and coal ownership, reliability, and, overburden. The final unioned coverage for each coal...
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These are shapefiles and coverages that represent areas of combined State and Federal coal leases and mined-out areas in the Yampa coal field. Yamaleasg contains polygons for which resources were not calculated for the A coal zone. Yambleasg contains polygons for which resources were not calculated for the B coal zone, etc.
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This is a coverage of the Colorado Plateau coal assessment study area. The study area outline was drawn on the county lines that most closely outline the coal-bearing rocks in the Colorado Plateau Region. The county outlines originate from a national coverage for which lines were extracted from U.S. Census 1990 TIGER/line files using an AML program written by Nebert, D., and Negri, M., USGS-Water Resources Division (WRD), running on two Data General 6220 servers.


map background search result map search result map Geology of the Danforth Hills study area, Colorado Plateau (dangeolg) Boundary of the Deserado Coal Area (desbndg.shp) Data Points (drill sites) for Deserado Coal Area, Colorado Plateau (desptg) Faults in the Lower White River coal field, Colorado Plateau (lwrfltg) Faults in the Southern Piceance Basin, 2000 Colorado Plateau Coal Assessment (psfltg) Geology of the southern Piceance Basin, Colorado (psgeolg) Active & Inactive Mines in the Southern Piceance Basin (psmng) San Juan Basin, CO and NM coal resources calculation area (sjbbndg) San Juan Basin Geology, New Mexico and Colorado (sjbgeolg) Isopachs of the interval between the top of the Huerfanito Bentonite Bed and the top of the Pictured Cliffs Sandstone, San Juan Basin (sjbhintg) Structure contours on top of the Pictured Cliffs Sandstone, San Juan Basin, NM and CO (sjbstrcg) Anticlines and synclines of the Yampa Coal Field (yamclineg) Final unioned files for Yampa coal field resource calculations, northwestern Colorado (yam*fing) Yampa coal field combined leased areas and mined-out areas, Colorado Plateau (yam*leasg) Boundaries delimiting areas within which resources were calculated for A through D coal zones, Yampa coal field, CO (yam*bndg) Unioned layer of coal resource calculation in the southern Piceance Basin, Colorado (ps*fing) Coal fields and outlines of coal-bearing strata in the Colorado Plateau coal assessment study area (cpcf*g) The Colorado Plateau coal assessment study area, 2000 (cpstdyg) The structure contours of the Calico sequence boundary in the Kaiparowits Plateau, southern Utah (csbstrc*g) Isopachs of total net coal in beds >1.2' thick, A - G coal zones, Danforth Hills coal field (dan*thkg) Data Points (drill sites) for Deserado Coal Area, Colorado Plateau (desptg) Boundary of the Deserado Coal Area (desbndg.shp) Isopachs of total net coal in beds >1.2' thick, A - G coal zones, Danforth Hills coal field (dan*thkg) Yampa coal field combined leased areas and mined-out areas, Colorado Plateau (yam*leasg) Geology of the Danforth Hills study area, Colorado Plateau (dangeolg) Anticlines and synclines of the Yampa Coal Field (yamclineg) Final unioned files for Yampa coal field resource calculations, northwestern Colorado (yam*fing) Boundaries delimiting areas within which resources were calculated for A through D coal zones, Yampa coal field, CO (yam*bndg) Faults in the Lower White River coal field, Colorado Plateau (lwrfltg) The structure contours of the Calico sequence boundary in the Kaiparowits Plateau, southern Utah (csbstrc*g) Active & Inactive Mines in the Southern Piceance Basin (psmng) Unioned layer of coal resource calculation in the southern Piceance Basin, Colorado (ps*fing) Faults in the Southern Piceance Basin, 2000 Colorado Plateau Coal Assessment (psfltg) Geology of the southern Piceance Basin, Colorado (psgeolg) San Juan Basin, CO and NM coal resources calculation area (sjbbndg) San Juan Basin Geology, New Mexico and Colorado (sjbgeolg) Isopachs of the interval between the top of the Huerfanito Bentonite Bed and the top of the Pictured Cliffs Sandstone, San Juan Basin (sjbhintg) Structure contours on top of the Pictured Cliffs Sandstone, San Juan Basin, NM and CO (sjbstrcg) Coal fields and outlines of coal-bearing strata in the Colorado Plateau coal assessment study area (cpcf*g) The Colorado Plateau coal assessment study area, 2000 (cpstdyg)