MS-03 Geologic Map of Moffat County, Colorado Download Publication Details Geologic map of Moffat County, Colorado. Moffat County lies in the northwest corner of the state and includes several oil and gas basins and coal deposits that are economic importance. This geologic map shows both the surficial and bedrock geology, which is predominately Tertiary and Cretaceous in age. Major faults are also shown on the map. 1 plate (1:126,720). Digital PDF download. MS-03D Citations Miller, Allan E. “MS-03 Geology of Moffat County, Colorado.” Geologic. Map Series. Denver, CO: Colorado Geological Survey, Department of Natural Resources, 1977. https://coloradogeologicalsurvey.org/publications/geologic-map-moffat-colorado.