Quartz Diorite to Granodiorite

Contains biotite, muscovite, and xenocrysts. Includes Whiteside Mountain, Stone Mountain, Mount Airy, Spruce Pine, and other smaller plutons.
State North Carolina
Name Quartz Diorite to Granodiorite
Geologic age Devonian
Lithologic constituents
Igneous > Plutonic > Dioritic > Quartz-dioritecontains biotite, muscovite, and xenocrysts
Igneous > Plutonic > Granitic > Granodioritecontains biotite, muscovite, and xenocrysts

Rhodes, Thomas S., and Conrad, Stephen G., 1985, Geologic Map of North Carolina: Department of Natural Resources and Community Development, Division of Land Resources, and the NC Geological Survey, compiled by Brown, Philip M., et al, and Parker, John M. III, and in association with the State Geologic Map Advisory Committee, scale 1:500,000.

The North Carolina Dept. of Environment, Health, and Natural Resources, Division of Land Resources, NC Geological Survey, in cooperation with the NC Center for Geographic Information and Analysis, 1998 (updated 2007), Geology - North Carolina (1:250,000), coverage data file geol250. The data represents the digital equivalent of the official State Geology map (1:500,000 scale), but was digitized from (1:250,000 scale) base maps.

NGMDB product
Counties Alleghany - Avery - Caldwell - Henderson - Jackson - Macon - Mitchell - Surry - Transylvania - Wilkes - Yancey