Generalized stratigraphic column of Piceance-Uinta Province, showing total petroleum systems and intervals of hydrocarbon production an source rocks. Modified from Sanborn (1977) and Spencer and Wilson (1988).

Source: The Mesaverde Total Petroleum System,Uinta-Piceance Province,Utah and Colorado
By R.C. Johnson and S.B. Roberts
Chapter 7 of Petroleum Systems and Geologic Assessment of Oil and Gas in the Uinta-Piceance Province, Utah and Colorado
By USGS Uinta-Piceance Assessment Team
U.S. Geological Survey Digital Data Series DDS–69–B