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Mineral Resources > Online Spatial Data > Geology > by state > Virginia Geology

Geologic units in Goochland county, Virginia

Migmatitic Paragneiss (Proterozoic) at surface, covers 0.6 % of this area

Migmatitic paragneiss.

Lithology: paragneiss

Newark Supergroup; Triassic Sandstone, Siltstone, and Shale (Upper Triassic) at surface, covers 5 % of this area

Interbedded sandstone, siltstone, and shale

Lithology: sandstone; siltstone; shale

Falls Run Granite Gneiss (Silurian) at surface, covers 0.6 % of this area

Falls Run Granite Gneiss - Granite

Lithology: granite

Columbia pluton (Ordovician) at surface, covers 0.3 % of this area

Columbia pluton - Granite

Lithology: granite

Interlayered Mafic and Felsic Metavolcanic Rocks - Quartzofeldspathic biotite gneiss (Cambrian) at surface, covers 18 % of this area

Interlayered Mafic and Felsic Metavolcanic Rocks - Quartzofeldspathic biotite gneiss

Lithology: biotite gneiss; schist; intermediate volcanic rock

Pegmatite - Goochland pegmatite district. (Proterozoic) at surface, covers < 0.1 % of this area

Pegmatite - Goochland pegmatite district.

Lithology: pegmatite

Ta River Metamorphic Suite (Cambrian) at surface, covers 7 % of this area

Ta River Metamorphic Suite - Amphibolite gneiss

Lithology: amphibolite; gneiss; schist; quartzite; biotite gneiss; felsic volcanic rock; gabbro; granite

Terrace Deposits (Tertiary) at surface, covers 3 % of this area

Terrace Deposits - Poorly sorted clay, sand, and rounded pebbles and cobbles, deeply weathered

Lithology: terrace; clay or mud; sand; gravel

Porphyroblastic Garnet-Biotite Gneiss (Proterozoic Y) at surface, covers 28 % of this area

Porphyroblastic garnet-biotite gneiss.

Lithology: biotite gneiss

Porphyroblastic Biotite Gneiss (Proterozoic) at surface, covers 16 % of this area

Porphyroblastic biotite gneiss

Lithology: biotite gneiss

Chopawamsic Formation - Foliated felsite (Cambrian) at surface, covers 0.1 % of this area

Chopawamsic Formation - Foliated felsite

Lithology: felsic volcanic rock

Quantico Formation - Micaceous quartzite (Ordovician) at surface, covers 0.3 % of this area

Quantico Formation - Micaceous quartzite

Lithology: quartzite; schist

Chopawamsic Formation - Interlayered felsic and mafic metavolcanic rocks (Cambrian) at surface, covers 2 % of this area

Chopawamsic Formation- Interlayered felsic and mafic metavolcanic rocks

Lithology: metavolcanic rock

Mylonite, Mylonite Gneiss, and Cataclastic Rocks (Proterozoic - Paleozoic ?) at surface, covers 4 % of this area

Mylonite, mylonite gneiss, and cataclastic rocks.

Lithology: mylonite; gneiss; cataclastite

Newark Supergroup; Breccia, mixed clasts (Upper Triassic) at surface, covers 0.7 % of this area

Breccia, mixed clasts

Lithology: breccia

Chopawamsic Formation - Mafic to intermediate metavolcanic rocks (Cambrian) at surface, covers < 0.1 % of this area

Chopawamsic Formation - Mafic to intermediate metavolcanic rocks

Lithology: mafic metavolcanic rock; intermediate metavolcanic rock; tuff

Granite Gneiss (Proterozoic Y-Pennsylvanian) at surface, covers 0.3 % of this area

Granite gneiss.

Lithology: granitic gneiss

Fine Creek Mills Granite (Proterozoic) at surface, covers 0.2 % of this area

Fine Creek Mills granite - Granite

Lithology: granite

Biotite Granite (Proterozoic) at surface, covers 1 % of this area

Biotite granite

Lithology: granite

Quantico Formation - Slate and porphyroblastic schist (Ordovician) at surface, covers 1 % of this area

Quantico Formation - Slate and porphyroblastic schist

Lithology: slate; schist

Amphibolite, Amphibole Gneiss, and Schist (Proterozoic Y) at surface, covers 0.7 % of this area

Amphibolite, amphibole gneiss, and schist.

Lithology: schist; gneiss; amphibolite

State Farm Gneiss (Proterozoic Y) at surface, covers 9 % of this area

State Farm Gneiss - Hornblende-biotite granite gneiss

Lithology: gneiss

Newark Supergroup; Triassic Sandstone, Siltstone, Shale, and Coal (Triassic) at surface, covers 0.9 % of this area

Interbedded sandstone, siltstone, shale and coal

Lithology: sandstone; siltstone; shale; coal

Petersburg Granite (Mississippian) at surface, covers < 0.1 % of this area

Petersburg Granite - Granite

Lithology: granite