Geology of the Devonian Marcellus Shale--Valley and Ridge province, Virginia and West Virginia--a field trip guidebook for the American Association of Petroleum Geologists Eastern Section Meeting, September 28-29, 2011

http://pubs.usgs.gov/of/2012/1194/

Detailed background information with descriptions of sites and photos explaining the geology of this organic-rich shale unit that has recently become a significant source of natural gas resources.

by Enomoto, Catherine B.; Coleman, James L. Jr.; Haynes, John T.; Whitmeyer, Steven J.; McDowell, Ronald R.; Lewis, J. Eric; Spear, Tyler P.; and Swezey, Christopher S.

U.S. Geological Survey Open-File Report 2012-1194

This publication is available only as a PDF document.