Geologic units in Lancaster county, South Carolina

Persimmon Fork Formation (Cambrian to Neoproterozoic) at surface, covers 47 % of this area

Predominately metatuff

Granite - Liberty Hill pluton (Carboniferous to Permian) at surface, covers 12 % of this area

Granite - Liberty Hill pluton

Peedee Formation - Black Creek Group, undivided (Cretaceous) at surface, covers 8 % of this area

Peedee Formation - Black Creek Group, undivided

Metamorphosed granite and granodiorite (Cambrian or Neoproterozoic) at surface, covers 7 % of this area

Metamorphosed granite and granodiorite

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

Phyllonite and phyllonitic schist (Late Paleozoic) at surface, covers 3 % of this area

Phyllonite and phyllonitic schist

Cid Formation, Mudstone Member (Ordovician to Late Cambrian) at surface, covers 3 % of this area

Thin bedded tuffaceous metasiltstone

Waxhaw metagranite (Ordovician to Cambrian) at surface, covers 3 % of this area

Metamorphosed fine- to medium-grained biotite granite and hypabyssal quartz porphyry, non-foliated except adjacent to Gold Hill and Waxhaw shear zones where it is gneissic to phyllonitic

Pleasant Hill metagranite (Cambrian or Neoproterozoic) at surface, covers 2 % of this area

Possibly similar to nearby Great Falls metagranite

Metadiorite (Cambrian or Neoproterozoic) at surface, covers 2 % of this area

Metadiorite

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

Amphibolite and amphibolite gneiss

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

Granite - Pageland pluton

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

Tuffaceous metasiltstone (Early Paleozoic-Neoproterozoic) at surface, covers 1 % of this area

Tuffaceous metasiltstone

Granite (Carboniferous to Permian) at surface, covers 0.6 % of this area

Granite

Alluvial Valley Swamp (Quaternary) at surface, covers 0.5 % of this area

Unconformable on all underlying units, fluvial sand and gravel at base, grading upwards into fine sands and silts, local peat. May be overrun with recent sediments from forest cutting and agriculture.

Richtex Formation (Ordovician to Middle Cambrian) at surface, covers 0.5 % of this area

Laminated metamudstone; contains Middle Cambrian or younger sponge spicules

Metagabbro and minor metadiorite (Middle Paleozoic to Neoproterozoic) at surface, covers 0.3 % of this area

Metagabbro and minor metadiorite

Mafic to intermediate metavolcanics including layered hornblende gneiss and amphibolite (Ordovician to Neoproterozoic) at surface, covers 0.2 % of this area

Mafic to intermediate metavolcanics including layered hornblende gneiss and amphibolite

Metamorphosed Mafic Rock (Paleozoic/Late Proterozoic) at surface, covers < 0.1 % of this area

Metagabbro, metadiorite, and mafic plutonic-volcanic complexes.

Metamorphosed Granitic Rock (Cambrian/Late Proterozoic) at surface, covers < 0.1 % of this area

Megacrystic, well foliated; locally contains hornblende. Chapel Hill, Chatham, Farrington, Meadow Flats, Mt. Moriah, Parks Crossroads plutons, and Roxboro and Vance County suites.