Coweeta Group; Biotite Gneiss (NCZYbn;2)

State	North Carolina
Name	Coweeta Group; Biotite Gneiss
Geologic age	Middle/Late Proterozoic
Original map label	ZYbn
Primary rock type	biotite gneiss
Secondary rock type	amphibolite
Other rock types
Lithologic constituents	Major Metamorphic > Amphibolite Metamorphic > Gneiss > Biotite-gneissBiotite Gneiss - migmatitic; interlayered and gradational with biotite-garnet gneiss; locally abundant quartz and alumino-silicates.
Map references	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, 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.
Unit references	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, 1:500,000-scale, compiled by Brown, Philip M., et al, and Parker, John M. III, and in association with the State Geologic Map Advisory Committee. 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, 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.
Geographic coverage	Buncombe - Clay - Haywood - Jackson - Macon - Madison - Swain