Geologic units in Rabun county, Georgia

Metagraywacke/ Mica Schist (Precambrian-Paleozoic) at surface, covers 52 % of this area

Metagraywacke/ Mica Schist

Biotite Gneiss (Precambrian-Paleozoic) at surface, covers 12 % of this area

Biotite gneiss

Quartzite (Precambrian-Paleozoic) at surface, covers 11 % of this area

Quartzite

Granitic Gneiss undifferentiated (Precambrian-Paleozoic) at surface, covers 10 % of this area

Granitic Gneiss undifferentiated

Aluminous Schist (Precambrian-Paleozoic) at surface, covers 8 % of this area

Aluminous Schist

Quartzite/ Mica Schist (Precambrian-Paleozoic) at surface, covers 4 % of this area

Quartzite/ Mica Schist

Hornblende Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 2 % of this area

Hornblende Gneiss/ Amphibolite

Ultramafic rocks undifferentiated (Precambrian-Paleozoic) at surface, covers 0.9 % of this area

Ultramafic rocks undifferentiated

Tallulah Falls Formation, gneiss and schist (Neoproterozoic) at surface, covers 0.4 % of this area

Biotite-quartz-plagioclase gneiss interpreted to be metagraywacke, and interlayered biotite-muscovite schist, garnet-mica schist and amphibolite

Ashe Metamorphic Suite and Tallulah Falls Formation; Biotite gneiss (Late Proterozoic) at surface, covers 0.3 % of this area

Interlayered with biotite-garnet gneiss, biotite-muscovite schist, garnet-mica schist, and amphibolite.

Coweeta Group (Late Proterozoic) at surface, covers < 0.1 % of this area

Quartz dioritic gneiss, feldspar-quartz-biotite gneiss, metasandstone and quartzite, alumino-silicate schist, garnetiferous biotite gneiss, and minor amphibolite. Quartz dioritic gneiss predominant.

Ashe Metamorphic Suite and Tallulah Falls Formation; Muscovite-biotite gneiss (Late Proterozoic) at surface, covers < 0.1 % of this area

Locally sulfidic; interlayered and gradational with mica schist, minor amphibolite, and hornblende gneiss.

Rabun Gneiss (Ordovician) at surface, covers < 0.1 % of this area

Weakly to well foliated, granitic to quartz monzonitic.

Coweeta Group; Biotite Gneiss (Middle/Late Proterozoic) at surface, covers < 0.1 % of this area

Migmatitic; interlayered and gradational with biotite-garnet gneiss and amphibolite; locally abundant quartz and alumino-silicates. Stratigraphic position uncertain.

Sillimanite Schist (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area

Sillimanite Schist

Ashe Metamorphic Suite and Tallulah Falls Formation; Amphibolite (Late Proterozoic) at surface, covers < 0.1 % of this area

Equigranular, massive to well foliated, interlayered, rarely discordant, metamorphosed intrusive to extrusive mafic rock; may include metasedimentary rock.