Big Clifty Sandstone

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The Big Clifty Sandstone is a geologic formation in Kentucky. It is sandstone Pennsylvanian in age. At Mammoth Cave National Park it overlies the Girkin Formation, the Ste. Genevieve Limestone, and the St. Louis Limestone, providing a cap for the entire cave system. The existence of Big Clifty and similar sandstones at Mammoth Cave is the cause for the sheer size of the cave passages below it due to water flow through them and subsequent dissolution.

The Big Clifty Sandstone also appears as sandstone knobs throughout south-central Kentucky, including the 200-foot tall Pilot Rock on the border of Christian County and Todd County.

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Categories: Geology stubs | Geologic formations | Geology of the United States

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• This page was last modified 13:51, 11 August 2006 by Wikipedia user Schlag96. Based on work by Wikipedia user(s) GurchBot and Riffsyphon1024.
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