State | Maine |
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Name | Ordovician - Precambrian Z Cape Elizabeth Formation |
Geologic age | Ordovician - Precambrian Z |
Lithologic constituents |
Major
Metamorphic > Metasedimentary > Metaclastic > Slate (Greenschist, Amphibolite)GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies; Protolith Q - Interbedded pelite and sandstone
Minor
Metamorphic > Schist (Greenschist, Amphibolite)Protolith Q - Interbedded pelite and sandstone; GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies.
Metamorphic > Metasedimentary > Metaclastic > Quartzite (Greenschist, Amphibolite)Protolith Q - Interbedded pelite and sandstone; GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies
Incidental
Metamorphic > Metasedimentary > Metaclastic > Phyllite (Greenschist, Amphibolite)Protolith Q - Interbedded pelite and sandstone; GS - Greenschist facies; E - Epidote-amphibolite facies; AA - Low rank amphibolite facies; AB - Medium rank amphibolite facies; AC - High rank amphibolite facies
|
Comments | Divisible into lower member of black to dark-gray, thinly laminated carbonate shale and minor feldspathic quartzite, 2,000 m thick and upper member of gray, thinly laminated shale and siltstone, 600 m thick. Underlies Albee Formation. Used in ME and NH as far east as 70 deg 45' at east edge of Cupsuptic quad; Dead River Formation is eastward equivalent of Aziscohos and Albee Formations. Age is Early Ordovician. (ME041) |
Stratigraphic units | Casco Bay Group |
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.Katz, F.J., 1917, Stratigraphy in southwestern Maine and southeastern New Hampshire, IN Shorter contributions to general geology, 1917: U.S. Geological Survey Professional Paper, 108-I, p. 165-177.https://pubs.er.usgs.gov/publication/pp108I US Geological Survey, 2005, National Geologic Map Database, Geologic Names Lexicon "GEOLEX", http://ngmdb.usgs.gov/Geolex/. |
NGMDB product | |
Counties | Cumberland - Kennebec - Knox - Lincoln - Penobscot - Sagadahoc - Waldo - York |