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On the basis of a mineral-resource survey the Allegheny Front and Hickory Creek Roadless Areas, Pennsylvania, have a substantiated potential for oil resources, a probable potential for gas resources, and little likelihood for the occurrence of coal and metallic mineral resources. The oil and gas in the Upper Devonian rocks are found in stratigraphic traps, that commonly are not evident from surface indications. The only sure method to determine if the Upper Devonian sandstones contain oil or gas at a specific site is to drill through the sequence and test the more favorable zones.
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ALLEGHENY FRONT AND HICKORY CREEK ROADLESS AREAS, PENNSYLVANIA.
Geological Survey Professional Paper (United States)