Ordovician Belle Lake Slate

Ordovician Belle Lake Slate
State Maine
Name Ordovician Belle Lake Slate
Geologic age Ordovician
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Slate (Greenschist)GS - Greenschist facies; Protolith A - Pelite
Comments W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith C - Sulfidic/carbonaceous 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 - Penobscot - Washington