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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.
This data set includes a GIS geologic map database of an EarlyProterozoic metavolcanic and metasedimentary terraneextensively intruded by Early and Middle Proterozoic graniticplutons. Laramide to Tertiary deformation and intrusion offelsic plutons have created numerous small mineral depositsthat are described in the tables and are shown on the figuresin the accompanying text pamphlet. Also included in thepamphlet are numerous chemical analyses of igneous and meta-igneous bodies of all ages in tables and in summary geochemicaldiagrams. The text pamphlet also contains a detaileddescription of map units and discussions of the aeromagneticsurvey, igneous and metmorphic rocks, and mineral deposits. Theprinted map sheet...
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.
Areal distribution of coal-bearing Mesaverde Formation and Mesaverde Group, southern Piceance Basin assessment area
This is a shape file and coverage of the top of the Rollins Sandstone Member. It outlines the area underlain by the coal-bearing Cameo/Fairfield coal group in the southern Piceance Basin coal assessment area. Also, it delimits the area within which resources were calculated and reported in the southern Piceance Basin coal assessment area. The polygon was adjusted to match the topography of the DEM.
Spatial Geologic Data Model for the Gunnison, Grand Mesa, UncompahgreNational Forests Mineral Resource Assessment Area, Southwestern Coloradoand Digital Data for the Leadville, Montrose, Durango, and Colorado Partsof the Grand Junction, Moab, and Cortez 1� X 2� Geologic Maps
Spatial Geologic Data Model for the Gunnison, Grand Mesa, Uncompahgre NationalForests Mineral Resource Assessment Area, Southwestern Coloradoand Arc/Info versions of the Leadville, Durangeo and Montrose 2 degreequadrangles as well as the Colorado half of the Grand Junction, Moab andCortez 2 degree quadrangles.