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Mineral Resources > Online Spatial Data > Geology > by state > South Carolina Geology

Geologic units in Union county, South Carolina

Battleground Formation, Mafic to intermediate metavolcanic rocks (Neoproterozoic) at surface, covers 7 % of this area

Battleground Formation, Mafic to intermediate metavolcanic rocks

Lithology: mafic metavolcanic rock

biotite-quartz-feldspar gneiss of the Whitmire reentrant (Cambrian and/or Neoproterozoic) at surface, covers 16 % of this area

Biotite-quartz-feldspar gneiss of the Whitmire reentrant: biotite-quartz-feldspar gneiss

Lithology: biotite gneiss

Gabbro- Buffalo pluton (Devonian to Silurian) at surface, covers 1 % of this area

Gabbro- Buffalo pluton

Lithology: gabbro

Santuck granite (Paleozoic) at surface, covers 4 % of this area

Santuck granite

Lithology: granite

Battleground Formation, Metasedimentary rocks, undivided (Neoproterozoic) at surface, covers 0.5 % of this area

Battleground Formation, Metasedimentary rocks, undivided: quartz-sericite schist/phyllite and interlayered quartzite, quartz-pebble conglomerate, high-alumina quartzite, and manganiferous schist

Lithology: schist; phyllite; quartzite; conglomerate

Philson Crossroads complex (undetermined) at surface, covers 3 % of this area

Philson Crossroads complex: biotite-quartz-feldspar gneiss having interlayers of amphibolite and metagranite

Lithology: biotite gneiss; amphibolite

Mylonite gneiss (Late Paleozoic) at surface, covers < 0.1 % of this area

Mylonite gneiss

Lithology: mylonite

Gneiss of Laurens area (Cambrian or Neoproterozoic) at surface, covers 0.9 % of this area

Gneiss of Laurens area: biotite-quartz-plagioclase gneiss and interlayers locally containing hornblende, sillimanite, microcline, and muscovite

Lithology: gneiss

Battleground Formation, Felsic metavolcanic rocks (Neoproterozoic) at surface, covers 0.8 % of this area

Battleground Formation, Felsic metavolcanic rocks

Lithology: felsic metavolcanic rock

Wildcat Branch complex (Early Paleozoic-Neoproterozoic) at surface, covers 2 % of this area

Wildcat Branch complex: metadiorite and minor metagabbro, containing sparse hornblendite and pyroxenite

Lithology: metamorphic rock

Lockhart metadiorite (Early Paleozoic-Neoproterozoic) at surface, covers 5 % of this area

Lockhart metadiorite: metadiorite and minor metagabbro, containing sparse hornblendite and pyroxenite

Lithology: metamorphic rock

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

Metagabbro and minor metadiorite

Lithology: gabbro

Diorite (undetermined) at surface, covers 0.6 % of this area

Diorite: includes unmetamorphosed, undeformed biotite-hornblende diorite

Lithology: diorite

Metagabbro- Chester (Middle Paleozoic to Neoproterozoic) at surface, covers 0.3 % of this area

Metagabbro- Chester: metagabbro and minor metadiorite

Lithology: gabbro

Metamorphosed granite and granodiorite (Cambrian or Neoproterozoic) at surface, covers 11 % of this area

Metamorphosed granite and granodiorite

Lithology: granite; granodiorite

Mean Crossroads intrusive complex (Early Paleozoic-Neoproterozoic) at surface, covers 3 % of this area

Mean Crossroads intrusive complex: metadiorite and minor metagabbro, containing sparse hornblendite and pyroxenite

Lithology: metamorphic rock

Metamorphosed granitoid rocks, undivided (Paleozoic to Neoproterozoic) at surface, covers 10 % of this area

Metamorphosed granitoid rocks, undivided

Lithology: granitoid

Syenite- Buffalo pluton (Devonian to Silurian) at surface, covers 0.5 % of this area

Syenite- Buffalo pluton

Lithology: syenite

Amphibolite and amphibolite gneiss (Paleozoic to Neoproterozoic) at surface, covers 0.7 % of this area

Amphibolite and amphibolite gneiss

Lithology: amphibolite; gneiss

Granite- Bald Rock pluton (Carboniferous to Permian) at surface, covers 31 % of this area

Granite- Bald Rock pluton

Lithology: granite

Enoree melange, Cedar Shoals gneiss and Cross Anchor mafic complex (undetermined) at surface, covers 0.2 % of this area

Enoree melange, Cedar Shoals gneiss and Cross Anchor mafic complex: Cedar Shoals gneiss is biotite-quartz-feldspar gneiss interpreted as metagraywacke; interlayered felsic gneiss interpreted as metavolcanic rock.

Lithology: gneiss

Biotite gneiss with interlayered marble, calcsilicate gneiss, sillimanite-muscovite schist, and garnet-quartz rock (undetermined) at surface, covers 2 % of this area

Biotite gneiss having interlayered marble, calc-silicate rock, sillimanite-muscovite schist, and garnet-quartz rock

Lithology: biotite gneiss; marble; schist; calc-silicate rock

Pacolet granite (Devonian) at surface, covers 0.7 % of this area

Pacolet granite

Lithology: granite

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

Ultramafic rock

Lithology: ultramafic intrusive rock