Geologic units in Carroll county, Georgia

Garnet Mica Schist (Precambrian-Paleozoic) at surface, covers 27 % of this area

Garnet Mica Schist

Mica Schist/ Gneiss (Precambrian-Paleozoic) at surface, covers 23 % of this area

Mica Schist/ Gneiss

Granitic Gneiss undifferentiated (Precambrian-Paleozoic) at surface, covers 19 % of this area

Granitic Gneiss undifferentiated

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

Graphite Schist

Hornblende Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 6 % of this area

Hornblende Gneiss/ Amphibolite

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

Granite undifferentiated

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

Granite Gneiss/ Granite

Mica Schist/ Quartzite/ Gneiss/ Amphibolite (Precambrian-Paleozoic) at surface, covers 3 % of this area

Mica Schist/ Quartzite/ Gneiss/ Amphibolite

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

Garnet Mica Schist/ Gneiss

Biotite Gneiss (Precambrian-Paleozoic) at surface, covers 0.8 % of this area

Biotite gneiss

Quartzite (Precambrian-Paleozoic) at surface, covers 0.7 % of this area

Quartzite

Biotitic Gneiss / Mica Schist/ Amphibolite (Precambrian-Paleozoic) at surface, covers 0.3 % of this area

Biotitic Gneiss / Mica Schist/ Amphibolite

Hornblende Gneiss (Precambrian-Paleozoic) at surface, covers 0.2 % of this area

Hornblende Gneiss

Quartzite/ Mica Schist/ Amphibolite (Precambrian-Paleozoic) at surface, covers 0.2 % of this area

Quartzite/ Mica Schist/ Amphibolite

Wedowee Group; Wedowee Group undifferentiated (Precambrian to Paleozoic) at surface, covers < 0.1 % of this area

Wedowee Group undifferentiated includes the Cragford Phyllite and Cutnose Gneiss. Cragford Phyllite -- interbedded fine-grained graphite-chlorite-sericite schist and phyllite, garnet-sericite schist and phyllite, graphite-quartz-sericite phyllite, locally feldspathic biotite gneiss, calc-silicate rock, and quartzite. Cutnose Gneiss -- cyclically interbedded fine-grained quartz-biotite feldspathic gneiss, graphite-chlorite-sericite schist, locally thin interbeds of graphite-quartz-sericite phyllite, and quartzite. Rocks in the area northeast of Clanton in Chilton and Coosa Counties that are here assigned to the Wedowee Group also have been interpreted as part of the Higgins Ferry Group.

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

Amphibolitic Schist

Biotitic Gneiss Undifferentiated (Precambrian-Paleozoic) at surface, covers < 0.1 % of this area

Biotitic Gneiss Undifferentiated

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

Dark-green to dark-gray hornblende amphibolite, extensively sheared and folded, and locally retrograded to actinolite-tremolite-chlorite schist. Includes all amphibolite associated with the Wedowee Group.

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

Amphibolite