Ordovician - Cambrian Cookson Formation lithic sandstone and pelite (MEOCAcss;0)

State	Maine
Name	Ordovician - Cambrian Cookson Formation lithic sandstone and pelite
Geologic age	Ordovician - Cambrian
Original map label	OCAcss
Comments	GS - Greenschist facies Protolith Q - Interbedded pelite and sandstone
Primary rock type	mudstone
Secondary rock type	sandstone
Other rock types
Lithologic constituents	Major Sedimentary > Clastic > SandstoneGS - Greenschist facies Protolith Q - Interbedded pelite and sandstone Sedimentary > Clastic > MudstoneGS - Greenschist facies Protolith Q - Interbedded pelite and 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. Fyffe, L.R. and Riva, J., 1990, Revised stratigraphy of the Cookson Group of southwestern New Brunswick and adjacent Maine, IN Raeside R.P., and Barr, S.M., eds., New age determinations in the Atlantic provinces: Atlantic Geology, Journal of the Atlantic Geoscience Society, v. 26, no. 3, p. 271-276.
Geographic coverage	Washington