| State | North Carolina |
|---|---|
| Name | Blowing Rock Gneiss |
| Geologic age | Middle Proterozoic |
| Lithologic constituents |
Major
Metamorphic > GneissBlowing Rock Gneiss - abundant white potassic feldspar megacrysts in finely banded biotite schist, locally calcareous
Minor
Metamorphic > Schist > Mica-schist > Biotite-schistabundant white potassic feldspar megacrysts in finely banded biotite schist, locally calcareous; interlayered with quartz-feldspar schist, calcareous biotite schist
Metamorphic > Metasedimentary > Metaclastic > Phyllite
Metamorphic > Metasedimentary > Metaclastic > Slateblack slate
Incidental
Metamorphic > Metasedimentary > Metaclastic > Quartzitecalcareous quartzite
Igneous > Volcanic > Felsic-volcanic (Pyroclastic-tuff)siliceous tuff
Metamorphic > Metaigneous > Greenstonesulfidic greenstone
|
| 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 | Burke - Caldwell - Watauga |