Geologic units in Davie county, North Carolina

Metamorphosed Mafic Rock (Paleozoic/Late Proterozoic) at surface, covers 36 % of this area

Metagabbro, metadiorite, and mafic plutonic-volcanic complexes.

Granitic Rock (Permian/Pennsylvanian) at surface, covers 20 % of this area

Megacrystic to equigranular. Churchland Plutonic Suite (Western group) - Churchland, Landis, and Mooresville intrusives.

Metamorphosed Granitic Rock (Cambrian/Late Proterozoic) at surface, covers 16 % of this area

Megacrystic, well foliated; locally contains hornblende.

Gabbro of Concord Plutonic Suite (Devonian/Ordovician) at surface, covers 6 % of this area

Barber, Concord, Farmington, Mecklenburg, and Weddington intrusives.

Phyllite and Schist (Cambrian/Late Proterozoic) at surface, covers 6 % of this area

Includes phyllonite and interlayered biotite gneiss.

Biotite Gneiss and Schist (Cambrian/Late Proterozoic) at surface, covers 4 % of this area

Inequigranular, locally abundant potassic feldspar and garnet; interlayered and gradational with calc-silicate rock, sillimanite-mica schist, mica schist, and amphibolite. Contains small masses of granitic rock.

Newark Supergroup, Dan River Group; Dan River Group, Undivided (Triassic) at surface, covers 4 % of this area

Basin-margin conglomerate and sandstone, red to brown, interfingering with basin-center sandstone and mudstone, green to brown. Conglomerate shown by pattern.

Metavolcanic Rock (Cambrian/Late Proterozoic) at surface, covers 2 % of this area

Interbedded felsic to mafic tuffs and flowrock.

Metamorphosed Granitic Rock (Ordovician/Cambrian) at surface, covers 1 % of this area

Equigranular to megacrystic, foliated to massive. Includes Toluca Granite.

Metamorphosed Quartz Diorite (Paleozoic/Late Proterozoic) at surface, covers 1 % of this area

Foliated to massive.

Mica Schist (Cambrian/Late Proterozoic) at surface, covers 1 % of this area

Garnet, staurolite, kyanite, or sillimanite occur locally; lenses and layers of quartz schist, micaceous quartzite, calc-silicate rock, biotite gneiss, amphibolite, and phyllite.

Biotite Gneiss and Schist (Cambrian/Late Proterozoic) at surface, covers 1.0 % of this area

Inequigranular and megacrystic; abundant potassic feldspar and garnet; interlayered and gradational with calc-silicate rock, sillimanite-mica schist, mica schist, and amphibolite. Contains small masses of granitic rock.

Quartzite (Cambrian/Late Proterozoic) at surface, covers 0.8 % of this area

Massive to well foliated; contains andalusite, kyanite, or sillimanite, chloritoid, and pyrite.

Granite of Salisbury Plutonic Suite (Devonian/Silurian) at surface, covers < 0.1 % of this area

Pink, massive to weakly foliated. Gold Hill, Kannapolis, Salisbury, Southmont, and Yadkin intrusives.