1. Geologic cross section I-I' through the Appalachian Basin from the eastern margin of the Illinois Basin, Jefferson County, Kentucky, to the Valley and Ridge Province, Scott County, Virginia Author/Creator: Geological Survey (U.S.), issuing body Publication/Creation: Reston, Va. : U.S. Geological Survey, 2015 Resource Type: Map Access & Availability: Loading
2. Detailed cross sections of the Eocene Green River formation along the North and East margins of the Piceance Basin, western Colorado, using measured sections and drill hole information Author/Creator: Johnson, Ronald C. 1950- (Ronald Carl), cartographer Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2014 Resource Type: Map Access & Availability: Loading