Geologic units in Henry county, Georgia

Biotitic Gneiss / Mica Schist/ Amphibolite (Precambrian-Paleozoic) at surface, covers 69 % of this area

Biotitic Gneiss / Mica Schist/ Amphibolite

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

Sillimanite Schist

Granite Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 7 % of this area

Granite Gneiss/ Amphibolite

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

Mica Schist/ Gneiss/ Amphibolite

Biotite Gneiss/ Feldspathic Biotite Gneiss (Precambrian-Paleozoic) at surface, covers 4 % of this area

Biotite Gneiss/ Feldspathic Biotite Gneiss

Hornblende Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 1 % of this area

Hornblende Gneiss/ Amphibolite

Quartzite/ Mica Schist (Precambrian-Paleozoic) at surface, covers 1.0 % of this area

Quartzite/ Mica Schist

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

Granite undifferentiated

Hornblende Gneiss/ Amphibolite/ Granite Gneiss (Precambrian-Paleozoic) at surface, covers 0.5 % of this area

Hornblende Gneiss/ Amphibolite/ Granite Gneiss

Granitic Gneiss undifferentiated (Precambrian-Paleozoic) at surface, covers 0.4 % of this area

Granitic Gneiss undifferentiated

Non-porphyritic granite (Precambrian-Paleozoic) at surface, covers 0.1 % of this area

Non-porphyritic granite

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

Amphibolite

Flinty Crush Rock (Age uncertain) at surface, covers < 0.1 % of this area

Flinty Crush Rock

Ultramafic rocks undifferentiated (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area

Ultramafic rocks undifferentiated