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The Blue Ridge belt in northwestern North Carolina and northeastern Tennessee is composed chiefly of 1,000-million to 1,100-million-year-old metamorphic and plutonic rocks that have been thrust many miles northwestward across unmetamorphosed Cambrian(?) and Cambrian sedimentary rocks of the Unaka belt. The Blue Ridge thrust sheet is rooted on the southeast along the Brevard zone, a zone of strike-slip faulting along which metamorphic and plutonic rocks of the Inner Piedmont belt are juxtaposed with rocks of the Blue Ridge. Near the southeastern edge of the Blue Ridge belt, the Blue Ridge thrust sheet is breached by erosion, and the rocks beneath are exposed in the Grandfather Mountain window, which is 45 miles long...
Tags: Alluvial fan, Alluvium, Amphibolite, Arkose, Ashe, All tags...


    map background search result map search result map USGS 1:24000-scale Quadrangle for Dolomite, CA 1987 USGS 1:24000-scale Quadrangle for Dolomite, CA 1987 USGS 1:24000-scale Quadrangle for Dolomite, CA 1987 USGS 1:24000-scale Quadrangle for Dolomite, CA 1987 USGS 1:24000-scale Quadrangle for Dolomite, CA 1987 USGS 1:24000-scale Quadrangle for Dolomite, CA 1987