Devonian Heald Mountain Rhyolite

Devonian Heald Mountain Rhyolite
State Maine
Name Devonian Heald Mountain Rhyolite
Geologic age Devonian
Lithologic constituents
Major
Igneous > Volcanic > Felsic-volcanic > RhyoliteGS - Greenschist facies
Comments W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith W - Mafic to felsic volcanic rocks
Stratigraphic units Kineo Volcanic Member of Tomhegan Formation of Moose River Group
References
NGMDB product
Counties Somerset