File:Utica Shale assessment - 01.jpg

Summary
http://en.wikipedia.org/wiki/File:Utica_Shale_assessment_-_01.jpg

Description English: Diagram showing the location of the oil and gas assessment units (AU) for the Utica Shale in the Appalachian Basin Province. Shale gas is produced from the Utica Shale in Quebec and Ohio. Date	12 October 2012, 19:30:01 Source	http://www.usgs.gov/newsroom/article.asp?ID=3419&from=rss_home#.UHjeP2_A9yc Author	USGS