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Devonian - Silurian Calderwood Formation

Devonian - Silurian Calderwood Formation
StateMaine
NameDevonian - Silurian Calderwood Formation
Geologic ageDevonian - Silurian
Original map labelDScd
CommentsGS - Greenschist facies; Protolith Q - Interbedded pelite and sandstone
Primary rock typemudstone
Secondary rock typesandstone
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.
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 coverageKnox

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