Mineral Resources On-Line Spatial Data
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|Name||Ordovician - Precambrian Z Cape Elizabeth Formation mafic to felsic volcanic member|
|Geologic age||Ordovician - Precambrian Z|
|Original map label||OZcev|
|Comments||Named for development at Cape Elizabeth, Cumberland Co., southwestern ME. Named as a formation in Casco Bay group. Consists of an assemblage of mostly thin-bedded, light-gray, siliceous and sericitic slates; and heavier beds of graywacke slate, schist, and quartzite containing, at short intervals, thin layers or laminae of black, micaceous phyllite and light-bluish calcareous schist or slate. Thickness about 600 ft. Underlies Spring Point greenstone; overlies Kittery quartzite. (ME062) Unit description from USGS GEOLEX website (ME078). AB - Medium rank amphibolite facies AC - High rank amphibolite facies Protolith W - Basaltic volcanic rocks|
|Primary rock type||mafic metavolcanic rock|
|Secondary rock type||felsic metavolcanic rock|
|Other rock types|
Metamorphic > Metaigneous > MetavolcanicAB - Medium rank amphibolite facies AC - High rank amphibolite facies Protolith W - Basaltic 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.
|Geographic coverage||Knox - Lincoln - Waldo|
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