Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block

Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block
State Maine
Name Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block
Geologic age Ordovician - Precambrian Z
Lithologic constituents
Major
Metamorphic > Metaigneous > Metavolcanic (Greenschist, Amphibolite)GS - Greenschist facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith W - Mafic to felsic volcanic rocks
Metamorphic > Metasedimentary (Greenschist, Amphibolite)GS - Greenschist facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith W - Mafic to felsic volcanic rocks
Comments GS - Greenschist facies; Protolith V - Rhyolitic 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.

NGMDB product
Counties Hancock - Knox - Lincoln - Penobscot - Waldo