Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Maine
|Name||Silurian rocks of the Fivemile Brook sequence|
|Original map label||Sfm|
|Comments||The preliminary discussion in Roy (1980) is here revised. The Fivemile Brook Formation consists of light-greenish-gray calcareous phyllite with thin beds and lenses of argillaceous biomicritic limestone and four mappable sequences of basaltic lava. (ME037) Unit description from USGS GEOLEX website (ME078). W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite Protolith B - Calcareous pelite|
|Primary rock type||phyllite|
|Secondary rock type||limestone|
|Other rock types||basalt|
Metamorphic > Metasedimentary > Metaclastic > Phyllite (Calcareous)W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite Protolith B - Calcareous pelite
Sedimentary > Carbonate > LimestoneW - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite Protolith B - Calcareous pelite
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow)W - Weakly metamorphosed; contains local occurrences of prehnite and pumpellyite Protolith B - Calcareous pelite
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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