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Mineral Resources > Online Spatial Data > Geology > by state > Georgia Geology

Geologic units in Fulton county, Georgia

[Additional scientific data in this geographic area]

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

Porphyritic granite

Lithology: granite

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

Garnet Mica Schist/ Gneiss

Lithology: mica schist; gneiss

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

Biotitic Gneiss Undifferentiated

Lithology: biotite gneiss

Mylonite and ultramylonite (Age not given) at surface, covers < 0.1 % of this area

Mylonite and ultramylonite

Lithology: mylonite

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

Biotite gneiss

Lithology: biotite gneiss

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

Amphibolite

Lithology: amphibolite

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

Hornblende Gneiss/ Amphibolite

Lithology: gneiss; amphibolite

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

Hornblende-Biotite Gneiss/ Amphibolite

Lithology: mafic gneiss; amphibolite

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

Biotite Gneiss/ Feldspathic Biotite Gneiss

Lithology: biotite gneiss; felsic gneiss

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

Calc-silicate Granite Gneiss

Lithology: granitic gneiss

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

Sericite Schist/ Amphibolite

Lithology: schist; amphibolite

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

Metagraywacke/ Mica Schist

Lithology: metasedimentary rock; mica schist

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

Mica Schist/ Gneiss/ Amphibolite

Lithology: mica schist; gneiss; amphibolite

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

Sillimanite Schist

Lithology: schist

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

Quartzite

Lithology: quartzite

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

Granitic Gneiss undifferentiated

Lithology: granitic gneiss

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

Ultramafic rocks undifferentiated

Lithology: ultramafic intrusive rock

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

Mica Schist

Lithology: mica schist

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

Muscovite Granite Gneiss

Lithology: granitic gneiss

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

Amphibolite/ Mica Schist/ Biotitic Gneiss

Lithology: amphibolite; mica schist; biotite gneiss

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

Hornblende Gneiss

Lithology: gneiss

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

Button Mica Schist

Lithology: mica schist

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

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

Aluminous Schist

Lithology: schist

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

Granite/ biotite granite/ amphibolite

Lithology: granite; amphibolite