1956. 2018-06-13T20:11:15Z. 2018-06-13T20:11:15Z. Wilson, Charles William, 1905- cartographer. State of Tennessee, Dept. of Conservation, Division of Geology. English. cartographic image. Public. Appalachian Region, Cumberland Mountains, Appalachian Region., United States, and Cumberland Mountains. Pennsylvanian and From 280 to 310 million years ago.
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1999. 2002-06-01T04:00:00Z. 2016-07-16T21:16:14Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by U.S. Geological Survey, Information Services. English. cartographic image. Public. Appalachian Basin, United States, and Appalachian Basin. Pennsylvanian and From 280 to 310 million years ago.