Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Maine
|Name||Silurian Smalls Falls Formation|
|Original map label||Ssf|
|Comments||Divided into lower interbedded sulfidic shale and sandstone member, 600 m thick; upper calc-silicate member; 150 m thick; a grit member present locally. Thins to north and southeast. Also has been mapped in NH. Replaces use of Parkman Hill Formation, here abandoned. (ME041) Unit description from USGS GEOLEX website (ME078). AC - High rank amphibolite facies Protolith C - Sulfidic/carbonaceous pelite|
|Primary rock type||shale|
|Secondary rock type||sandstone|
|Other rock types||calc-silicate rock|
Sedimentary > Clastic > SandstoneAC - High rank amphibolite facies Protolith C - Sulfidic/carbonaceous pelite
Sedimentary > Clastic > Mudstone > ShaleAC - High rank amphibolite facies Protolith C - Sulfidic/carbonaceous pelite
Metamorphic > Metasedimentary > Calc-silicate-rockAC - High rank amphibolite facies Protolith C - Sulfidic/carbonaceous 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.
|Geographic coverage||Franklin - Kennebec - Oxford - Penobscot - Piscataquis - Somerset|
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