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Geologic units in Troup county, Georgia

[Additional scientific data in this geographic area]

Mica Schist/ Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 25 % of this area
Mica Schist/ Gneiss/ Amphibolite
Lithology: mica schist; gneiss; amphibolite
Dadeville Complex; Rock Mills Granite Gneiss (Precambrian to Paleozoic) at surface, covers < 0.1 % of this area
Rock Mills Granite Gneiss - coarse to medium-grained biotite granite gneiss; locally includes thick bands of epidote and thin, small amphibolite bodies. Boundary between Rock Mills Granite Gneiss and Camp Hill Granite Gneiss arbitrarily defined.
Lithology: granitic gneiss; amphibolite
Dadeville Complex; Ropes Creek Amphibolite (Precambrian to Paleozoic) at surface, covers 0.2 % of this area
Ropes Creek Amphibolite - layered and massive amphibolite; locally includes hornblende migmatite and ultramafic pods.
Lithology: amphibolite; migmatite; ultramafic intrusive rock
Mica Schist (Precambrian-Paleozoic) at surface, covers 0.7 % of this area
Mica Schist
Lithology: mica schist
Quartzite (Precambrian-Paleozoic) at surface, covers 0.8 % of this area
Quartzite
Lithology: quartzite
Quartzite/ Mica Schist (Precambrian-Paleozoic) at surface, covers 0.4 % of this area
Quartzite/ Mica Schist
Lithology: quartzite; mica schist
Granitic Gneiss undifferentiated (Precambrian-Paleozoic) at surface, covers 0.4 % of this area
Granitic Gneiss undifferentiated
Lithology: granitic gneiss
Aluminous Schist (Precambrian-Paleozoic) at surface, covers 0.6 % of this area
Aluminous Schist
Lithology: schist
Biotitic Gneiss / Mica Schist/ Amphibolite (Precambrian-Paleozoic) at surface, covers 0.3 % of this area
Biotitic Gneiss / Mica Schist/ Amphibolite
Lithology: biotite gneiss; mica schist; amphibolite
Dadeville Complex; Waresville Schist (Precambrian to Paleozoic) at surface, covers < 0.1 % of this area
Waresville Schist - banded amphibolite interlayered with chlorite schist, chlorite amphibolite, chlorite-actinolite schist, chlorite +/- magnetite quartzite, and actinolite quartzite; may include small ultramafic pods.
Lithology: amphibolite; schist; quartzite; ultramfic intrusive rock
Granite Gneiss/ Granite (Precambrian-Paleozoic) at surface, covers 13 % of this area
Granite Gneiss/ Granite
Lithology: granitic gneiss; granite
Granite undifferentiated (Precambrian-Paleozoic) at surface, covers 8 % of this area
Granite undifferentiated
Lithology: granite
Biotitic Gneiss / Amphibolite (Precambrian-Paleozoic) at surface, covers 0.2 % of this area
Biotitic Gneiss / Amphibolite
Lithology: biotite gneiss; amphibolite
Hornblende Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 49 % of this area
Hornblende Gneiss/ Amphibolite
Lithology: gneiss; amphibolite
Amphibolite (Precambrian-Paleozoic) at surface, covers 0.3 % of this area
Amphibolite
Lithology: amphibolite
Dadeville Complex; Waverly Gneiss (Precambrian to Paleozoic) at surface, covers < 0.1 % of this area
Waverly Gneiss - feldspathic biotite-hornblende gneiss with thin layers of amphibolite, calc-silicate rock, garnet quartzite, and muscovite schist; locally rich in manganese.
Lithology: mafic gneiss; amphibolite; quartzite; mica schist; calc-silicate rock
Dadeville Complex; Agricola Schist (Precambrian to Paleozoic) at surface, covers < 0.1 % of this area
Agricola Schist - biotiite +/- garnet +/- sillimanite-feldspar-quartz schist, interlayered with thin-bedded dark-brown hornblende amphibolite; contains pegmatite pods and veins.
Lithology: quartz-feldspar schist; amphibolite; pegmatite
Biotite Gneiss (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area
Biotite gneiss
Lithology: biotite gneiss

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