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Open-File Report 2008–1220

Preliminary Stratigraphic Cross Sections of Oil Shale in the Eocene Green River Formation, Uinta Basin, Utah

By John R. Dyni

Abstract

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Oil shale units in the Eocene Green River Formation are shown on two east-west stratigraphic sections across the Uinta Basin in northeastern Utah. Several units have potential value for recovery of shale oil, especially the Mahogany oil shale zone, which is a high grade oil shale that can be traced across most of the Uinta Basin and into the Piceance Basin in northwestern Colorado. Many thin medium to high grade oil shale beds above the Mahogany zone can also be traced for many miles across the basin. Several units below the Mahogany that have slow velocities on sonic logs may be low grade oil shale. These may have value as a source for shale gas.

Version 1.0

Posted October 2008

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Suggested citation:

Dyni, J.R., 2008, Preliminary stratigraphic cross sections of oil shale in the Eocene Green River Formation, Uinta Basin, Utah: U.S. Geological Survey Open-File Report 2008–1220, 11 p.


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