Geologic units in Greenwood county, South Carolina

Geologic units in Greenwood county, South Carolina

Metamorphosed granitoid rocks, undivided (Paleozoic to Neoproterozoic) at surface, covers 31 % of this area

Metamorphosed granitoid rocks, undivided

Biotite quartz-plagioclase gneiss (Paleozoic or Neoproterozoic) at surface, covers 25 % of this area

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

Persimmon Fork Formation (Cambrian to Neoproterozoic) at surface, covers 19 % of this area

Predominately metatuff

Mylonite gneiss (Late Paleozoic) at surface, covers 5 % of this area

Mylonite gneiss

Gneiss of Laurens area (Cambrian or Neoproterozoic) at surface, covers 4 % of this area

Biotite-quartz-plagioclase gneiss and interlayers locally containing hornblende, sillimanite, microcline, and muscovite

Gabbro - Greenwood pluton (Devonian to Silurian) at surface, covers 4 % of this area

Gabbro - Greenwood pluton

Granite - Coronaca pluton (Carboniferous to Permian) at surface, covers 4 % of this area

Granite - Coronaca pluton

Reedy River complex (Paleozoic) at surface, covers 3 % of this area

Gneissic biotite granite to granodiorite

Diorite (Age uncertain) at surface, covers 1 % of this area

Includes unmetamorphosed, undeformed biotite-hornblende diorite

Gabbro of Concord Plutonic Suite (Devonian to Silurian) at surface, covers 0.9 % of this area

Gabbro of Concord Plutonic Suite

Little River Sequence, metasedimentary rocks (Cambrian or Neoproterozoic) at surface, covers 0.9 % of this area

White-mica schist and phyllite, metatuff, quartz-muscovite schist, and minor quartzite

Richtex Formation (Ordovician to Middle Cambrian) at surface, covers 0.7 % of this area

Laminated metamudstone; contains Middle Cambrian or younger sponge spicules

Newberry granite (Silurian) at surface, covers 0.4 % of this area

Newberry granite

Sillimanite-mica schist and muscovite-biotite schist (Cambrian or Neoproterozoic) at surface, covers 0.4 % of this area

Thin to thick layered sillimanite-mica schist and sillimanite-bearing muscovite-biotite schist

Gabbro - McCormick pluton (Devonian to Silurian) at surface, covers 0.4 % of this area

Gabbro - McCormick pluton

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

Granite

Metagabbro and minor metadiorite (Middle Paleozoic to Neoproterozoic) at surface, covers 0.1 % of this area

Metagabbro and minor metadiorite

Amphibolite and amphibolite gneiss (Paleozoic to Neoproterozoic) at surface, covers 0.1 % of this area

Amphibolite and amphibolite gneiss

Ultramafic rock (Paleozoic or Neoproterozoic) at surface, covers < 0.1 % of this area

Ultramafic rock

Phyllonite and phyllonitic schist (Late Paleozoic) at surface, covers < 0.1 % of this area

Phyllonite and phyllonitic schist