Injected Gneiss

Biotite gneiss and schist intruded by numerous sills and dikes of granite, pegmatite, and aplite; minor hornblende gneiss.
State North Carolina
Name Injected Gneiss
Geologic age Cambrian/Late Proterozoic
Lithologic constituents
Major
Metamorphic > Schist > Mica-schist > Biotite-schist
Metamorphic > GneissInjected Gneiss - biotite gneiss and minor hornblende gneiss.
Minor
Igneous > Plutonic > Granitic > Granite (Dike or sill)intruded by numerous sills and dikes of granite
Incidental
Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatite (Dike or sill)intruded by numerous sills and dikes of pegmatite
Igneous > Plutonic > Granitic > Leucocratic-granitic > Aplite (Dike or sill)intruded by numerous sills and dikes of aplite
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
Counties Franklin - Halifax - Johnston - Northampton - Vance - Wake