Silurian Perry Mountain Formation

Silurian Perry Mountain formation
State Maine
Name Silurian Perry Mountain Formation
Geologic age Silurian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > ShaleGS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith Q - Interbedded pelite and sandstone
Sedimentary > Clastic > SandstoneGS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith Q - Interbedded pelite and sandstone
Minor
Metamorphic > Metasedimentary > Metaclastic > Quartzite (Greenschist, Amphibolite)GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith Q - Interbedded pelite and sandstone
Comments GS - Greenschist facies; Protolith V - Basaltic volcanic rocks
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.

Moench, R.H. and Pankiwskyj, K.A., 1988, Geologic map of western interior Maine: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1692, 21 p., 1 sheet, scale 1:250,000.

https://pubs.er.usgs.gov/publication/i1692

US Geological Survey, 2005, National Geologic Map Database, Geologic Names Lexicon "GEOLEX", http://ngmdb.usgs.gov/Geolex/.

NGMDB product
Counties Franklin - Kennebec - Oxford - Penobscot - Piscataquis - Somerset