Data Series 181
This geodatabase is a digital reproduction of three legacy USGS oil shale publications--MF-958 (Pitman and Johnson, 1978), MF-1069 (Pitman, 1979), and OC-132 (Pitman and others, 1990). The database consists of 106 feature classes in three feature datasets organized by publication. Each dataset contains isopach contours, isoresource contours, isoresource polygons, and corehole and drillhole locations with resource values for 12 kerogen-rich (R) and kerogen-lean (L) oil shale zones in the Piceance Creek Basin, Colorado. The uppermost zones, Mahogany and R-6, also contain detailed structure files. The zones in descending order are: Mahogany, R-6, L-5, R-5, L-4, R-4, L-3, R-3, L-2, R-2, L-1, and R-1.
Pitman, J. K.; Johnson, R. C., 1978, Isopach, structure contour, and resource maps of the Mahogany oil-shale zone, Green River Formation, Piceance Creek basin, Colorado: U.S. Geological Survey Miscellaneous Field Studies Map 958 http://pubs.er.usgs.gov/usgspubs/mf/mf958
Pitman, Janet K.; Pierce, Frances Wahl; Grundy, W. D., 1990, Thickness, oil-yield, and kriged resource estimates for the Eocene Green River Formation, Piceance Creek Basin, Colorado: U.S. Geological Survey Oil and Gas Investigation Chart 132 http://pubs.er.usgs.gov/usgspubs/oc/oc132
Pitman, J. K., 1979, Isopach, structure contour, and resource maps of the R-6 oil-shale zone, Green River Formation, Piceance Creek basin, Colorado: U.S. Geological Survey Miscellaneous Field Studies Map 1069 http://pubs.er.usgs.gov/usgspubs/mf/mf1069
Posted February 2007