Mineral Resources On-Line Spatial Data
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|Name||Silurian Sangerville Formation Anasagunticook member sulfidic pelite|
|Original map label||Ssar|
|Comments||Consists of well-bedded metasandstone, thinly laminated metasiltstone, and metashale. Thin medial unit of metalimestone. Thought to be fine-grained facies of Sangerville Formation and is assigned as a member (after usage of Pankiwskyj, 1979). About 1,000 m thick. Gradationally overlies Patch Mountain Member of Sangerville Formation. (ME041). Anasagunticook Member reassigned from Sangerville Formation to Waterville Formation following usage of Osberg (1988). Not shown separately on this map to simplify nomenclature. Rocks previously mapped as Anasagunticook Member of Sangerville Formation in the Bryant Pond, Buckfield, Dixfield, and Farmington 15-min quads are here shown as Waterville Formation (queried). Anasagunticook correlated with Waterville by Osberg (1988) on the basis of lithologic similarity. (ME004) Unit description from USGS GEOLEX website (ME078). AC - High rank amphibolite facies Protolith C - Sulfidic/carbonaceous pelite|
|Primary rock type||metasedimentary rock|
|Secondary rock type|
|Other rock types|
Metamorphic > MetasedimentaryAC - 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.
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