Potential petroleum resources of northeastern Utah and northwestern Colorado
— Albert F. Sanborn

The area covered in this paper (fig. 1) contains more than 104,000 km² (40,000 mi²). It includes the Uinta, Piceance, Eagle, North Park, Middle Park, and South Park basins.

 

The region is rich in hydrocarbons. Commercial production of oil and gas is obtained from strata of the Paleozoic, Mesozoic and Cenozoic Eratherms. Thick sedimentary strata are present, and source and reservoir beds are amply distributed throughout the geologic section. Because of the thickness of sedimentary rocks, the range in age of reservoir rocks, and the abundant shows of hydrocarbons in much of the geologic section, prospects for development of substantial new reserves are excellent (fig. 2).