Geologic units in Stephens county, Georgia

Geologic units in Stephens county, Georgia

Additional scientific data in this geographic area

Granitic Gneiss undifferentiated (Precambrian-Paleozoic) at surface, covers 43 % of this area

Granitic Gneiss undifferentiated

Hornblende Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 16 % of this area

Hornblende Gneiss/ Amphibolite

Granite/ granite gneiss (Precambrian-Paleozoic) at surface, covers 14 % of this area

Granite/ granite gneiss

Biotitic Gneiss / Mica Schist/ Amphibolite (Precambrian-Paleozoic) at surface, covers 14 % of this area

Biotitic Gneiss / Mica Schist/ Amphibolite

Metagraywacke/ Mica Schist (Precambrian-Paleozoic) at surface, covers 5 % of this area

Metagraywacke/ Mica Schist

Amphibolite (Precambrian-Paleozoic) at surface, covers 4 % of this area

Amphibolite

Quartzite/ Biotite Granite Gneiss (Precambrian-Paleozoic) at surface, covers 3 % of this area

Quartzite/ Biotite Granite Gneiss

Wallhalla metamorphic suite (Cambrian or Neoproterozoic) at surface, covers 0.6 % of this area

Predominately hornblende-plagioclase gneiss and amphibolite, locally having interlayers of biotite-quartz-feldspar gneiss, undivided

Granodiorite gneiss and granite gneiss (Devonian to Silurian) at surface, covers 0.3 % of this area

Granodiorite gneiss and granite gneiss

Chauga River Formation and Poor Mountain Formation, undivided (Cambrian or Neoproterozoic) at surface, covers < 0.1 % of this area

Chauga River Formation and Poor Mountain Formation, undivided

Mylonitic rocks of Brevard fault zone (Late Paleozoic) at surface, covers < 0.1 % of this area

Mylonitic and phyllonitic equivalents of Chauga River Formation and other adjacent rock units

Biotite Gneiss/ Feldspathic Biotite Gneiss (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area

Biotite Gneiss/ Feldspathic Biotite Gneiss