Ordovician Lobster Mountain volcanic complex

Ordovician Lobster Mountain volcanic complex
State Maine
Name Ordovician Lobster Mountain volcanic complex
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > ConglomerateW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith W - Mafic to felsic volcanic rocks
Igneous > Volcanic > Felsic-volcanic (Pyroclastic-tuff)W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; GS - Greenschist facies; Protolith W - Mafic to felsic volcanic rocks
Comments W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith U - Andesitic volcanic rocks
References
NGMDB product
Counties Piscataquis - Somerset