Geologic units in Barrow county, Georgia

Amphibolite (Precambrian-Paleozoic) at surface, covers 2 % of this area: Amphibolite
Lithology: amphibolite
Biotitic Gneiss / Mica Schist/ Amphibolite (Precambrian-Paleozoic) at surface, covers 50 % of this area: Biotitic Gneiss / Mica Schist/ Amphibolite
Lithology: biotite gneiss; mica schist; amphibolite
Granite Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 9 % of this area: Granite Gneiss/ Amphibolite
Lithology: granitic gneiss; amphibolite
Hornblende Gneiss/ Amphibolite/ Granite Gneiss (Precambrian-Paleozoic) at surface, covers 0.4 % of this area: Hornblende Gneiss/ Amphibolite/ Granite Gneiss
Lithology: gneiss; amphibolite; granitic gneiss
Button Mica Schist (Precambrian-Paleozoic) at surface, covers 3 % of this area: Button Mica Schist
Lithology: mica schist
Quartzite (Precambrian-Paleozoic) at surface, covers 0.4 % of this area: Quartzite
Lithology: quartzite
Ultramafic rocks undifferentiated (Precambrian-Paleozoic) at surface, covers 0.2 % of this area: Ultramafic rocks undifferentiated
Lithology: ultramafic intrusive rock
Granitic Gneiss undifferentiated (Precambrian-Paleozoic) at surface, covers 35 % of this area: Granitic Gneiss undifferentiated
Lithology: granitic gneiss
Mica Schist (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area: Mica Schist
Lithology: mica schist
Mica Schist/ Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area: Mica Schist/ Gneiss/ Amphibolite
Lithology: mica schist; gneiss; amphibolite

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