Geologic units in Fairfield county, South Carolina

Metamorphosed granite and granodiorite (Cambrian or Neoproterozoic) at surface, covers 37 % of this area

Metamorphosed granite and granodiorite

Granite - Winnsboro pluton (Carboniferous to Permian) at surface, covers 13 % of this area

Granite - Winnsboro pluton

Mylonite gneiss (Late Paleozoic) at surface, covers 10 % of this area

Mylonite gneiss

Persimmon Fork Formation (Cambrian to Neoproterozoic) at surface, covers 9 % of this area

Predominately metatuff

Richtex Formation (Ordovician to Middle Cambrian) at surface, covers 5 % of this area

Laminated metamudstone; contains Middle Cambrian or younger sponge spicules

Newberry granite (Silurian) at surface, covers 4 % of this area

Newberry granite

Biotite quartz-plagioclase gneiss (Paleozoic or Neoproterozoic) at surface, covers 4 % of this area

Biotite quartz-plagioclase gneiss with minor interlayers of amphibolite gneiss and mica schist

Longtown Metagranite (Neoproterozoic) at surface, covers 3 % of this area

Biotite metagranite

Felsic metavolcanic rocks and felsic gneiss interpreted to the metavolcanics (Ordovician to Neoproterozoic) at surface, covers 3 % of this area

Felsic metavolcanic rocks and felsic gneiss interpreted to the metavolcanics

Metagabbro - Big Wateree Creek (Middle Paleozoic to Neoproterozoic) at surface, covers 2 % of this area

Metagabbro and minor metadiorite

Diorite-gabbro - Dutchman's Creek pluton (Carboniferous) at surface, covers 2 % of this area

Diorite-gabbro - Dutchman's Creek pluton

Mafic to intermediate metavolcanics including layered hornblende gneiss and amphibolite (Ordovician to Neoproterozoic) at surface, covers 2 % of this area

Mafic to intermediate metavolcanics including layered hornblende gneiss and amphibolite

Great Falls metagranite (Cambrian or Neoproterozoic) at surface, covers 2 % of this area

Foliated, metamorphosed muscovite-biotite granite having accessory garnet and discordantly intruding surrounding rocks

Amphibolite and amphibolite gneiss (Paleozoic to Neoproterozoic) at surface, covers 2 % of this area

Amphibolite and amphibolite gneiss

Granite - Liberty Hill pluton (Carboniferous to Permian) at surface, covers 1 % of this area

Granite - Liberty Hill pluton

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

Little Mountain metatonalite

Metamorphosed granitoid rocks, undivided (Paleozoic to Neoproterozoic) at surface, covers 0.5 % of this area

Metamorphosed granitoid rocks, undivided

Cape Fear/Eutaw Formations (Cretaceous) at surface, covers 0.2 % of this area

Poorly sorted clayey sand and gravel deposited in delta-dominated fluvial- and restricted marine environments. Unit is characterized by an abundance of smoky quartz gravel, feldspar, monazite, and garnet typically concentrated in placer deposits. Generally non-marine from North Carolina to central Georgia but contains shallow-water delta-front deposits in western Georgia.

Granite (Carboniferous to Permian) at surface, covers 0.2 % of this area

Granite