Geologic units in Saluda county, South Carolina

Persimmon Fork Formation (Cambrian to Neoproterozoic) at surface, covers 50 % of this area

Predominately metatuff

Richtex Formation (Ordovician to Middle Cambrian) at surface, covers 15 % of this area

Laminated metamudstone; contains Middle Cambrian or younger sponge spicules

Asbill Pond Formation (Middle Cambrian) at surface, covers 13 % of this area

Metamorphosed siltstones and sandstones having interbedded felsic to mafic metavolcanic rocks

Black Creek/Cusseta/Blufftown Formations (Cretaceous) at surface, covers 8 % of this area

Moderately to poorly sorted sand and clay deposited in delta-dominated shallow marine environments. Unit is characterized by sands containing locally abundant (F-VC grained) tourmaline and (F-VC grained) muscovite with some monazite and garnet. Clay layers are also common and some lower delta plain deposits form commercial kaolin bodies. Generally very restricted marine in eastern Georgia becoming more open marine to the east and west.

Mafic to intermediate metavolcanics including layered hornblende gneiss and amphibolite (Ordovician to Neoproterozoic) at surface, covers 3 % of this area

Mafic to intermediate metavolcanics including layered hornblende gneiss and amphibolite

Granite - Batesburg (gneissic) pluton (Carboniferous to Permian) at surface, covers 3 % of this area

Granite - Batesburg (gneissic) pluton

Granite - Clouds Creek pluton (Carboniferous to Permian) at surface, covers 2 % of this area

Granite - Clouds Creek pluton

Mylonitic rocks of Modoc Fault Zone (Late Paleozoic) at surface, covers 2 % of this area

Mylonite gneiss

Little Mountain metatonalite (Neoproterozoic) at surface, covers 1 % of this area

Little Mountain metatonalite

Mylonite gneiss (Late Paleozoic) at surface, covers 0.7 % of this area

Mylonite gneiss

Diorite-gabbro - Clouds Creek pluton (Carboniferous) at surface, covers 0.7 % of this area

Diorite-gabbro - Clouds Creek pluton

Phyllonite and phyllonitic schist (Late Paleozoic) at surface, covers 0.6 % of this area

Phyllonite and phyllonitic schist

Huber/Lisbon/Barnwell Formations, undivided (Eocene) at surface, covers 0.6 % of this area

Poorly to well sorted sand, clay and carbonates deposited in delta-dominated fluvial- and open-marine environments. Unit is characterized by commercial kaolin bodies in older strata from westernmost South Carolina to central Georgia. Younger strata are cyclic marine deposits which deeper water facies exposed in western Georgia. Carbonate facies are locally mined in western Georgia for agricultural lime.

Metamorphosed granitoid rocks, undivided (Paleozoic to Neoproterozoic) at surface, covers 0.1 % of this area

Metamorphosed granitoid rocks, undivided