Geologic units in Fulton county, Georgia

Additional scientific data in this geographic area

Biotitic Gneiss / Mica Schist/ Amphibolite (Precambrian-Paleozoic) at surface, covers 25 % of this area

Biotitic Gneiss / Mica Schist/ Amphibolite

Porphyritic granite (Precambrian-Paleozoic) at surface, covers 16 % of this area

Porphyritic granite

Mica Schist/ Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 11 % of this area

Mica Schist/ Gneiss/ Amphibolite

Granite Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 9 % of this area

Granite Gneiss/ Amphibolite

Aluminous Schist (Precambrian-Paleozoic) at surface, covers 9 % of this area

Aluminous Schist

Biotitic Gneiss Undifferentiated (Precambrian-Paleozoic) at surface, covers 7 % of this area

Biotitic Gneiss Undifferentiated

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

Button Mica Schist

Calc-silicate Granite Gneiss (Precambrian-Paleozoic) at surface, covers 3 % of this area

Calc-silicate Granite Gneiss

Quartzite (Precambrian-Paleozoic) at surface, covers 3 % of this area

Quartzite

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

Biotite Gneiss/ Feldspathic Biotite Gneiss

Muscovite Granite Gneiss (Precambrian-Paleozoic) at surface, covers 2 % of this area

Muscovite Granite Gneiss

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

Granitic Gneiss undifferentiated

Garnet Mica Schist/ Gneiss (Precambrian-Paleozoic) at surface, covers 1 % of this area

Garnet Mica Schist/ Gneiss

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

Sericite Schist/ Amphibolite

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

Biotite gneiss

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

Hornblende Gneiss

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

Amphibolite

Mica Schist (Precambrian-Paleozoic) at surface, covers 0.5 % of this area

Mica Schist

Amphibolite/ Mica Schist/ Biotitic Gneiss (Precambrian-Paleozoic) at surface, covers 0.5 % of this area

Amphibolite/ Mica Schist/ Biotitic Gneiss

Ultramafic rocks undifferentiated (Precambrian-Paleozoic) at surface, covers 0.3 % of this area

Ultramafic rocks undifferentiated

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

Sillimanite Schist

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

Metagraywacke/ Mica Schist

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

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

Hornblende-Biotite Gneiss/ Amphibolite

Granite/ biotite granite/ amphibolite (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area

Granite/ biotite granite/ amphibolite