OF-16-02 Geologic Map of the Watkins Quadrangle OF-16-02 Geologic Map of the Watkins Quadrangle, Arapahoe and Adams Counties, Colorado
OF-15-12 Geologic Map of the Piney Creek Quadrangle OF-15-12 Geologic Map of the Piney Creek Quadrangle, Arapahoe, Douglas, and Elbert Counties, Colorado
OF-78-08 Location Map of Drill Holes Used for Coal Evaluation in the Denver and Cheyenne Basins OF-78-08 Location Map of Drill Holes Used for Coal Evaluation in the Denver and Cheyenne Basins, Colorado
MS-17 Inventory of Nonmetallic Mining and Processing Operations in Colorado|MS-17 Inventory of Nonmetallic Mining and Processing Operations in Colorado MS-17 Inventory of Nonmetallic Mining and Processing Operations in Colorado
MS-19 The Coal Bed Methane Resources of Colorado (detail) MS-19 The Coal Bed Methane Resources of Colorado
OF-14-07 Geologic Map of the Watkins SE Quadrangle OF-14-07 Geologic Map of the Watkins SE Quadrangle, Arapahoe and Elbert Counties, Colorado
OF-12-05 Geologic Map of the Falcon Quadrangle OF-12-05 Geologic Map of the Falcon Quadrangle, El Paso County, Colorado
OF-12-04 Geologic Map of the Elbert Quadrangle OF-12-04 Geologic Map of the Elbert Quadrangle, Elbert and El Paso Counties, Colorado
OF-11-01 Notes on the Denver Basin Geologic Maps: Bedrock Geology OF-11-01 Notes on the Denver Basin Geologic Maps: Bedrock Geology, Structure, and Isopach Maps of Upper Cretaceous to Paleogene Strata between Greeley and Colorado Springs, Colorado
OF-11-03 Cross-sections of the Fresh-water-bearing Strata of the Denver Basin between Greeley and Colorado Springs OF-11-03 Cross-sections of the Fresh-water-bearing Strata of the Denver Basin between Greeley and Colorado Springs, Colorado