History for USGS Professional Paper 1777

After a Century—Revised Paleogene Coal Stratigraphy, Correlation, and Deposition, Powder River Basin, 
Wyoming and Montana
By Romeo M. Flores, Brianne D. Spear, Scott A. Kinney, Peter A. Purchase, and Craig M. Gallagher

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Posted online September 2010
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This publication supersedes USGS Open-File Report 2010-1061 
http://pubs.er.usgs.gov/publication/ofr20101061

Flores, R.M., Spear, B.D., Purchase, P.A., and Gallagher, C.M., 2010, Revised subsurface stratigraphic 
framework of the Fort Union and Wasatch Formations, Powder River Basin, Wyoming and Montana: U.S. Geological
Survey Open-File Report 2010–1061, 24 p., 17 pls.
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