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

Geologic units in Appomattox county, Virginia

[Additional scientific data in this geographic area]

Candler Formation - Phyllite and schist (Cambrian) at surface, covers 0.3 % of this area

Candler Formation - Phyllite in central Blue Ridge Anticlinorium; Phyllite, metasiltstone and quartz-mica schist in southwest Blue Ridge Anticlinorium

Lithology: phyllite; schist; metasedimentary rock

Interlayered Mafic and Felsic Metavolcanic Rocks - Quartzofeldspathic biotite gneiss (Cambrian) at surface, covers < 0.1 % of this area

Interlayered Mafic and Felsic Metavolcanic Rocks - Quartzofeldspathic biotite gneiss

Lithology: biotite gneiss; schist; intermediate volcanic rock

Interlayered Mafic and Felsic Metavolcanic Rocks - Amphibolite, hornblende-biotite gneiss, and schist. (Cambrian) at surface, covers 2 % of this area

Interlayered Mafic and Felsic Metavolcanic Rocks - Amphibolite, hornblende-biotite gneiss, and schist.

Lithology: amphibolite; biotite gneiss; schist

Alligator Back Formation - Banded marble (Proterozoic Z-Cambrian) at surface, covers 2 % of this area

Alligator Back Formation - Banded marble

Lithology: marble; gneiss; schist

Alligator Back Formation - Actinolite schist (Proterozoic Z-Cambrian) at surface, covers 0.7 % of this area

Alligator Back Formation - Actinolite schist

Lithology: schist

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

Plagiogranite

Lithology: granitoid

Metavolcanic and Metasedimentary Rocks - Greenstone or amphibole gneiss. (Cambrian) at surface, covers 22 % of this area

Metavolcanic and Metasedimentary Rocks - Greenstone or amphibole gneiss.

Lithology: greenstone; gneiss

Interlayered Mafic and Felsic Metavolcanic Rocks - Foliated felsite (Cambrian) at surface, covers 11 % of this area

Interlayered Mafic and Felsic Metavolcanic Rocks - Foliated felsite

Lithology: felsic volcanic rock; schist; gneiss; breccia

Arvonia Formation - Porphyroblastic garnet-biotite schist (Ordovician) at surface, covers 0.8 % of this area

Arvonia Formation - Porphyroblastic garnet-biotite schist

Lithology: mica schist

Metagraywacke, Quartzose Schist, and Melange (Proterozoic Z-Cambrian) at surface, covers 26 % of this area

Metagraywacke, Quartzose Schist, and Melange - Meta-argillite is metagraywacke; quartzose schist

Lithology: meta-argillite; schist; melange

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

Lineated biotite granite gneiss

Lithology: granitic gneiss

Bassett Formation - Biotite gneiss and granite gneiss. (Proterozoic Z) at surface, covers 2 % of this area

Bassett Formation - Quartzofeldspathic biotite gneiss and granite gneiss.

Lithology: biotite gneiss; granitic gneiss

Arvonia Formation - Slate and porphyroblastic schist (Ordovician) at surface, covers 0.8 % of this area

Arvonia Formation - Slate and porphyroblastic schist

Lithology: slate; schist

Newark Supergroup; Conglomerate, mixed clasts (Upper Triassic) at surface, covers 0.1 % of this area

Conglomerate, mixed clasts

Lithology: conglomerate

Alligator Back Formation - Feldspathic metagraywacke (Proterozoic Z-Cambrian) at surface, covers 6 % of this area

Alligator Back Formation - Meta-argillite is feldspathic metagraywacke; graphitic mica schist, and quartzite.

Lithology: meta-argillite; schist; quartzite; melange; marble; gneiss

Ultramafic Rocks (Proterozoic) at surface, covers < 0.1 % of this area

Ultramafic rocks

Lithology: ultramafitite (komatiite)

Fork Mountain Formation (Proterozoic Z-Cambrian) at surface, covers 14 % of this area

Fork Mountain Formation - Quartzose mica schist, garnet-biotite gneiss, calc-silicate quartzite, and melange.

Lithology: mica schist; gneiss; quartzite; melange

Mylonite, Mylonite Gneiss, and Cataclastic Rocks (Proterozoic - Paleozoic ?) at surface, covers 1 % of this area

Mylonite, mylonite gneiss, and cataclastic rocks.

Lithology: mylonite; gneiss; cataclastite

Foliated Biotite Granite (Proterozoic) at surface, covers < 0.1 % of this area

Foliated biotite granite

Lithology: granite

Metavolcanic and Metasedimentary Rocks - Felsic metatuff, mica schist, and gneiss. (Cambrian) at surface, covers 9 % of this area

Metavolcanic and Metasedimentary Rocks - Felsic metatuff, mica schist, and gneiss.

Lithology: felsic metavolcanic rock; mica schist; gneiss

Bassett Formation - Amphibolite. (Proterozoic Z-Cambrian) at surface, covers 0.4 % of this area

Bassett Formation - Amphibolite.

Lithology: amphibolite; gneiss; schist