Open-File Report 2011–1298
The U.S. Geological Survey recently assessed the potential for natural gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province. The Marcellus Shale was assessed as a continuous gas accumulation using a methodology identical to that used in the assessment of shale and other continuous-type assessment units throughout the United States. This preliminary report provides some additional geologic information used in the Marcellus Shale assessment.
The Appalachian Basin Province encompasses rocks of the Paleozoic passive margins, the foreland basins, and fold and thrust belts formed during several episodes in the Paleozoic. The Marcellus Shale is one of many marine shales deposited in the area that is now encompassed by the Appalachian Basin Province.
First posted November 23, 2011
For additional information contact:
Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.
USGS Marcellus Shale Assessment Team, 2011, Information relevant to the U.S. Geological Survey assessment of the Middle Devonian Shale of the Appalachian Basin Province, 2011: U.S. Geological Survey Open-File Report 2011–1298, 22 p.
Estimated Ultimate Recovery Distributions
Geologic Data Input Forms for Assessment
Appendix 1. Geologic input data for the assessment of the Foldbelt Marcellus Assessment Unit (50670467)
Appendix 2. Geologic input data for the assessment of the Interior Marcellus Assessment Unit (50670468)
Appendix 3. Geologic input data for the assessment of the Western Margin Marcellus Assessment Unit (50670469)