Cambrian Hurricane Mountain Formation, metaquartzwacke (MECAhqw;0)

State	Maine
Name	Cambrian Hurricane Mountain Formation, metaquartzwacke
Geologic age	Cambrian
Original map label	CAhqw
Comments	Consists of dark, rusty-weathering, siliceous, scaly slate or schist, with flaser structure and polymict fragments ranging in size from a few millimeters up to (in ME) several hundred meters. Considered a melange consisting of metasedimentary, felsic and mafic metavolcanic, and ultramafic rocks. Unit description from USGS GEOLEX website (ME078). W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith E - Feldspathic sandstone
Primary rock type	sandstone
Secondary rock type
Other rock types
Lithologic constituents	Major Metamorphic > Metasedimentary > Metaclastic > Metasandstone > Metagraywackemetaquartzwacke W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite; Protolith E - Feldspathic sandstone
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. USGS Geologic Names Lexicon (GEOLEX) [http://ngmdb.usgs.gov/Geolex/]
Geographic coverage	Somerset