marcellus shale usgs

23 Aug 2011 ... These gas estimates are significantly more than the last USGS assessment of the 21 May 2009 ... Prepared by USGS West Trenton Publishing Service Center. Water Resources 23 Aug 2011 ... Together, these components confirm the Marcellus Shale as a continuous The Marcellus shale is an organic-rich black shale that was deposited in an ... 25 Aug 2011 ... This week the USGS released a new assessment of gas resources in the 23 Aug 2011 ... The U.S. will slash its estimate of undiscovered Marcellus Shale ... �We consider 26 Aug 2011 ... According to the USGS, there are about 84 trillion cubic feet of technically-23 Aug 2011 ... PITTSBURGH � The U.S. Geological Survey said Tuesday that the Marcellus United States Geological Survey Publication on Water Resources and Natural 24 Aug 2011 ... The U.S. Geological Survey said its survey of the Marcellus Shale deposit in the