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Silurian undifferentiated pelites and sandstones

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Silurian undifferentiated pelites and sandstones, in part of the Allsbury Formation and in part unnamed
State Maine
Name Silurian undifferentiated pelites and sandstones
Geologic age Silurian
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Slate (Zeolitic (prehnite-pumpellyite), Greenschist)W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith Q - Interbedded pelite and sandstone
Sedimentary > Clastic > SandstoneW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith Q - Interbedded pelite and sandstone
Minor
Sedimentary > Clastic > Sandstone > GraywackeW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith Q - Interbedded pelite and sandstone
Sedimentary > Clastic > ConglomerateW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith Q - Interbedded pelite and sandstone
Comments GS - Greenschist 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.

Neuman, R.B., 1967, Bedrock geology of the Shin Pond and Stacyville quadrangles, Penobscot County, Maine, IN Shorter contributions to general geology, 1965: U.S. Geological Survey Professional Paper, 524-I, p. I1-I39.

https://pubs.er.usgs.gov/publication/pp524I

US Geological Survey, 2005, National Geologic Map Database, Geologic Names Lexicon "GEOLEX", http://ngmdb.usgs.gov/Geolex/.
NGMDB product
Counties Aroostook - Penobscot - Piscataquis