Stratigraphy and Hydrocarbon Potential of the Fort Union and Lance Formations in the Great Divide and Washakie Basins, South-Central Wyoming

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The purpose of this study is to establish the stratigraphy and basin development of the Great Divide and Washakie Basins, with the ultimate goal of constraining the timing and hydrocarbon-generation potential of the Lance and Fort Union petroleum systems. Stratigraphic correlations, interpreted from 883 oil and gas wells, were extended from outcrops along the Atlantic Rim into the subsurface of the Washakie and Great Divide Basins. These correlations were used to create a series of cross sections, isopach maps, and subsurface structure maps, which, when integrated with age control data, yield a more complete picture of basin development.

Document Type: 

  • Report


  • critical issues, database publication, energy, oil and gas, wyoming