Coalbed methane potential in the Appalachian states of Pennsylvania,West Virginia, Maryland, Ohio, Virginia, Kentucky, and Tennessee--An overview
Paul C. Lyons
Open-File Report 96-735
Figure 3. Stratigraphy of coalbed methane beds (bold) in the central and northern Appalachian basin. Scale, thickness and correlations of beds and units in the central and northern Appalachian basin are not implied. Other selected coal beds (not bold) are shown for stratigraphic reference.
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U.S. Department of the Interior, U.S. Geological Survey
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