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 Date: 2015-04-08 14:37:27Metamorphic rocks Schist Wissahickon Formation Wissahickon Creek White Clay Creek State Park Sedimentary rock Amphibolite White Clay Creek Sandstone Petrology Geology Metamorphic petrology |
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White Clay Creek Preserve, Chester County, Pennsylvania; New Castle County, Delaware—A Scenic Valley and the Arc Corner | White Clay Creek Preserve, Chester County, Pennsylvania; New Castle County, Delaware—A Scenic Valley and the Arc CornerDocID: 19Lgz - View Document |
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