Geologic units in Talbot county, Georgia

Biotite Gneiss (Precambrian-Paleozoic) at surface, covers 38 % of this area

Biotite gneiss

Hornblende Gneiss/ Amphibolite/ Granite Gneiss (Precambrian-Paleozoic) at surface, covers 21 % of this area

Hornblende Gneiss/ Amphibolite/ Granite Gneiss

Mica Schist/ Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 13 % of this area

Mica Schist/ Gneiss/ Amphibolite

Tuscaloosa Formation (Cretaceous) at surface, covers 8 % of this area

Tuscaloosa Formation

Charnockite (Precambrian-Paleozoic) at surface, covers 5 % of this area

Charnockite

Eutaw Formation (Cretaceous) at surface, covers 4 % of this area

Eutaw Formation

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

Mica Schist/ Gneiss

Mica Schist (Precambrian-Paleozoic) at surface, covers 2 % of this area

Mica Schist

Granitic Gneiss undifferentiated (Precambrian-Paleozoic) at surface, covers 2 % of this area

Granitic Gneiss undifferentiated

Blufftown Formation (Cretaceous) at surface, covers 2 % of this area

Blufftown Formation

Quartzite (Precambrian-Paleozoic) at surface, covers 1 % of this area

Quartzite

Stream alluvium (Quaternary) at surface, covers 1 % of this area

Stream alluvium and undifferentiated terrace deposits

Flinty Crush Rock (Age uncertain) at surface, covers 0.2 % of this area

Flinty Crush Rock

Hornblende Gneiss (Precambrian-Paleozoic) at surface, covers 0.1 % of this area

Hornblende Gneiss

Cusseta Sand (Cretaceous) at surface, covers < 0.1 % of this area

Cusseta Sand

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

Hornblende Gneiss/ Amphibolite

Mylonite and ultramylonite (Age uncertain) at surface, covers < 0.1 % of this area

Mylonite and ultramylonite