Biotite Granitic Gneiss (NCYbgg;2)

State	North Carolina
Name	Biotite Granitic Gneiss
Geologic age	Middle Proterozoic
Lithologic constituents	Major Metamorphic > GneissBiotite Granitic Gneiss - pinkish gray to light gray, massive to well-foliated, granitic to quartz monzonitic; includes variably mylonitized orthogneiss and paragneiss Minor Metamorphic > Metasedimentary > Calc-silicate-rock Metamorphic > Metasedimentary > Metacarbonate > Marble Metamorphic > Amphibolite
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, 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	NGMDB product page for 55091
Counties	Alleghany - Ashe - Avery - Buncombe - Haywood - Jackson - Macon - Madison - Mitchell - Swain - Watauga - Yancey

State

Name

Biotite Granitic Gneiss

Geologic age

Middle Proterozoic

Lithologic constituents

Major

Metamorphic > GneissBiotite Granitic Gneiss - pinkish gray to light gray, massive to well-foliated, granitic to quartz monzonitic; includes variably mylonitized orthogneiss and paragneiss

Minor

Metamorphic > Metasedimentary > Calc-silicate-rock

Metamorphic > Metasedimentary > Metacarbonate > Marble

Metamorphic > Amphibolite

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, 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

NGMDB product page for 55091

Counties

Alleghany - Ashe - Avery - Buncombe - Haywood - Jackson - Macon - Madison - Mitchell - Swain - Watauga - Yancey