Silurian granite

Silurian granite
State Maine
Name Silurian granite
Geologic age Silurian
Lithologic constituents
Igneous > Plutonic > Granitic > Granitebiotite granite undivided; U - Unmetamorphosed
Comments W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith W - Mafic to felsic volcanic rocks
Stratigraphic units includes: 28 - East Inlet pluton (ME094).

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.

Eisenberg, R.A., 1981, Chronostratigraphy of metavolcanic and associated intrusive rocks of the Boundary Mountains anticlinorium: Geol. Soc. Amer., Abs. with Prog., v. 13, p. 131.

NGMDB product
Counties Oxford