Devonian unnamed garnet rhyolite

Devonian unnamed garnet rhyolite
State Maine
Name Devonian unnamed garnet rhyolite
Geologic age Devonian
Lithologic constituents
Major
Igneous > Volcanic > Felsic-volcanic > RhyoliteW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith T - Rhyolitic volcanic rocks
Comments GS - Greenschist facies; Protolith N - limestone and/or dolostone
References

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 Piscataquis - Somerset