Ordovician granite

Ordovician biotite granite undivided
State Maine
Name Ordovician granite
Geologic age Ordovician
Lithologic constituents
Igneous > Plutonic > Granitic > Granitebiotite granite undivided; U - Unmetamorphosed
Comments U - Unmetamorphosed

Osberg, P.H., Hussey, A.M., and Boone, G.M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, Dept. of Conserv., scale 1:500,000.

NGMDB product
Counties Somerset