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	Introduction The Oriskany Sandstone is the main deep gas reservoir in western Maryland. Appalachian gas drillers have long suspected that the dark gray to black shale, known as the Marcellus Shale, that overlies the Oris Add to Reading List Document Date: 2013-02-06 15:09:48 Open Document File Size: 1,65 MB Share Result on Facebook

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Introduction The Oriskany Sandstone is the main deep gas reservoir in western Maryland. Appalachian gas drillers have long suspected that the dark gray to black shale, known as the Marcellus Shale, that overlies the OrisAdd to Reading List