Home Archived Aug 4, 2016

USGS Geology in the Parks

Geologic Provinces of the United States: Appalachian Highlands Gallery

Old Rag Mountain

Looking East from Blue Ridge

Shenandoah National Park
Photo by Paul Hackley, USGS

Looking east from Blue Ridge, the western boundary of the Blue Ridge and Great Valley of the Valley and Ridge provinces, to Old Rag Mountain in Shenandoah National Park, Virginia. The craggy peaks of light rock are billion year old leucocratic Old Rag Granite. Beyond the peak is the dissected plateau of the Piedmont province that is underlain by less resistant polymetamorphic rocks.

Appalachian Highlands
| Pacific | | Columbia Plateau | | Basin and Range | | Colorado Plateau | | Rocky Mountain | | Laurentian Upland| | Interior Plains | | Interior Highlands | | Appalachian Highlands | | Atlantic Plain | | Alaskan | | Hawaiian | | Geologic province home | | Geologic time | | Plate tectonics | | Tapestry of Time and Terrain |

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://geomaps.wr.usgs.gov/parks/province/shen3.html
Page Contact Information: Webmaster
Page Last Modified: 02-Oct-2014@17:29