Silurian - Precambrian Z ultramafic rocks

Silurian - Precambrian Z ultramafic rocks
State Maine
Name Silurian - Precambrian Z ultramafic rocks
Geologic age Silurian - Precambrian Z
Lithologic constituents
Major
Igneous > Plutonic > UltramaficU - Unmetamorphosed
Comments W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; Protolith A - Pelite
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 Aroostook