Ordovician - Cambrian unnamed volcanic rocks (MEOCAuv;0)

State	Maine
Name	Ordovician - Cambrian unnamed volcanic rocks
Geologic age	Ordovician - Cambrian
Original map label	OCAuv
Comments	W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite GS - Greenschist facies Protolith W - Mafic to felsic volcanic rocks
Primary rock type	mafic volcanic rock
Secondary rock type	felsic volcanic rock
Other rock types
Lithologic constituents	Major Igneous > Volcanic > Mafic-volcanicW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite GS - Greenschist facies Protolith W - Mafic to felsic volcanic rocks Igneous > Volcanic > Felsic-volcanicW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite GS - Greenschist facies Protolith W - Mafic to felsic volcanic rocks
Map references	Digital bedrock data downloaded from Maine Office of GIS in September 2005 from http://apollo.ogis.state.me.us/catalog/catalog.asp?state=2&extent=cover#bedrock Bedrock units table (publication date 11/15/2002) downloaded from same site. Permission to redistribute these data granted by Dr. Robert Marvinney, State Geologist of Maine, in September 2006. [http://apollo.ogis.state.me.us/catalog/catalog.asp?state=2&extent=cover#bedrock]
Unit 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.
Geographic coverage	Oxford - Piscataquis