State | Maine |
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Name | Devonian Seboomook Formation Temple Stream member |
Geologic age | Silurian-Devonian |
Lithologic constituents |
Major
Metamorphic > Schist (Greenschist, Amphibolite)Protolith C - Sulfidic/carbonaceous pelite; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; E - Epidote-amphibolite facies; GS - Greenschist facies; Protolith C - Sulfidic/carbonaceous pelite.
Minor
Metamorphic > Metasedimentary > Metaclastic > Metasandstone (Greenschist, Amphibolite)Protolith C - Sulfidic/carbonaceous pelite; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; E - Epidote-amphibolite facies; GS - Greenschist facies; Protolith C - Sulfidic/carbonaceous pelite.
Metamorphic > Metasedimentary > Metaclastic > Metaconglomerate (Greenschist, Amphibolite)Protolith C - Sulfidic/carbonaceous pelite; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; E - Epidote-amphibolite facies; GS - Greenschist facies; Protolith C - Sulfidic/carbonaceous pelite.
Metamorphic > Metasedimentary > Metaclastic > Metasiltstone (Greenschist, Amphibolite)Protolith C - Sulfidic/carbonaceous pelite; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; E - Epidote-amphibolite facies; GS - Greenschist facies; Protolith C - Sulfidic/carbonaceous pelite.
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Comments | Rank raised to formation of the Seboomook Group following usage of Pollock (1987). Occurs in central Maine trough in western ME and consists of cyclically interbedded pelitic schist and graded metasiltstone and metasandstone. Similar to Day Mountain and Carrabassett Formations, also of Seboomook Group, but contains smaller proportion of arenaceous rocks than Day Mountain and a larger proportion than Carrabassett. In areas of migmatitic gneiss, lower part may contain abundant remnants of underlying Hildreths Formation of Seboomook Group. (ME004) Unit description from USGS GEOLEX website (ME078). AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; E - Epidote-amphibolite facies; GS - Greenschist facies; Protolith Q - Interbedded pelite and sandstone. |
References | 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.Moench, R.H., Boone, G.M., Bothner, W.A., Boudette, E.L., Hatch, N.L., Jr., Hussey, A.M., III, Marvinney, R.G. and Aleinikoff, J.N., 1995, Geologic map of the Sherbrooke-Lewiston area, Maine, New Hampshire, and Vermont, United States, and Quebec, Canada: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1898-D, 56 p., 2 sheets, scale 1:250,000, Prepared in cooperation with the Maine Geological Survey and the New Hampshire Geological Survey.https://pubs.er.usgs.gov/publication/i1898D US Geological Survey, 2005, National Geologic Map Database, Geologic Names Lexicon "GEOLEX", http://ngmdb.usgs.gov/Geolex/. |
NGMDB product | |
Counties | Franklin - Oxford - Somerset |