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The Middle Devonian Marcellus Shale is one of the premier gas shale plays of North America in terms of total gas resource, extent, production...
A map displaying the Shale Plays of North America.
A map displaying the Lower 48 States Shale Plays.
The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The...
West Virginia Marcellus Outcrop