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

Geologic units in Lunenburg county, Virginia

Migmatitic Paragneiss (Proterozoic) at surface, covers 3 % of this area

Migmatitic paragneiss.

Lithology: paragneiss

Mafic Volcanic Rocks (Proterozoic Z) at surface, covers < 0.1 % of this area

Mafic volcanic rocks.

Lithology: mafic metavolcanic rock; phyllite; metasedimentary rock

Biotite-Muscovite Granite (Proterozoic) at surface, covers 0.9 % of this area

Biotite-muscovite granite

Lithology: granite

Hornblende-plagioclase Gabbro (Proterozoic) at surface, covers 4 % of this area

Hornblende Gabbro in Carolina Slate Belt; Hornblende-Plagioclase Gabbro in Central Virginia Volcanic-Plutonic Belt; Gabbro, Hornblendite and Norite in Central Piedmont

Lithology: gabbro; norite

Interlayered Mafic and Felsic Volcanic Rocks (Proterozoic Z) at surface, covers 29 % of this area

Interlayered mafic and felsic metavolcanic rocks.

Lithology: mafic metavolcanic rock; felsic metavolcanic rock; metasedimentary rock

Biotite Granite (Proterozoic) at surface, covers 12 % of this area

Biotite granite

Lithology: granite

Felsic Volcanic Rocks (Proterozoic Z) at surface, covers 0.3 % of this area

Felsic volcanic rocks.

Lithology: felsic volcanic rock

Aaron Slate (Proterozoic Z) at surface, covers 10 % of this area

Aaron Slate - Phyllite and slate.

Lithology: phyllite; slate; metasedimentary rock

North View Granite (Proterozoic) at surface, covers 0.8 % of this area

North View Granite

Lithology: granite

Biotite Gneiss (Proterozoic) at surface, covers 8 % of this area

Biotite gneiss

Lithology: biotite gneiss

Mylonite, Mylonite Gneiss, and Cataclastic Rocks (Proterozoic - Paleozoic ?) at surface, covers 6 % of this area

Mylonite, mylonite gneiss, and cataclastic rocks.

Lithology: mylonite; gneiss; cataclastite

Buggs Island Pluton (Mississippian Pennsylvanian) at surface, covers 8 % of this area

Buggs Island pluton - Granite

Lithology: granite

Biotite Gneiss and Schist (Proterozoic) at surface, covers 0.8 % of this area

Biotite gneiss and schist.

Lithology: gneiss; schist

Metatonalite (Proterozoic) at surface, covers 3 % of this area

Metatonalite

Lithology: tonalite; granodiorite; quartz diorite

Biotite Granodiorite (Proterozoic) at surface, covers 2 % of this area

Biotite granodiorite

Lithology: granodiorite

Quartzofeldspathic Gneiss (Proterozoic Y-Pennsylvanian) at surface, covers 1 % of this area

Quartzofeldspathic gneiss

Lithology: felsic gneiss

Porphyroblastic Biotite Granite (Proterozoic) at surface, covers 9 % of this area

Porphyroblastic biotite granite

Lithology: granite

Porphyritic Granite (Proterozoic) at surface, covers 0.9 % of this area

Porphyritic granite

Lithology: granite