Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Maine
|Name||Ordovician - Precambrian Z Columbia Falls Formation|
|Geologic age||Ordovician - Precambrian Z|
|Original map label||OZcf|
|Comments||GS - Greenschist facies Protolith X - Undetermined volcanic rocks|
|Primary rock type||mafic volcanic rock|
|Secondary rock type||felsic volcanic rock|
|Other rock types|
Igneous > Volcanic > Felsic-volcanicGS - Greenschist facies Protolith X - Undetermined volcanic rocks
Igneous > Volcanic > Mafic-volcanicGS - Greenschist facies Protolith X - Undetermined volcanic rocks
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.
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.
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