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USGS Geology in the Parks

Geologic Provinces of the United States: Appalachian Highlands Gallery

Old Rag Mountain

Old Rag Mountain

Shenandoah National Park
Photo by Paul Hackley, USGS

View looking north to Old Rag Mountain, Shenandoah National Park, in the Blue Ridge province of Virginia. The craggy rock peak is exposed billion year old granitic gneiss called the Old Rag Granite. The low land in the foreground is a fluvial valley more characteristic of the Piedmont province to the east.

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