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Orfordville Formation, Sunday Mountain Volcanics

Orfordville Formation, Sunday Mountain Volcanics - Greenstone, chloritic schist, felsite, and quartz-feldspar-sericite schist.
StateVermont
NameOrfordville Formation, Sunday Mountain Volcanics
Geologic ageOrdovician
Original map labelOos
CommentsPart of Eastern Vermont
Primary rock typegreenstone
Secondary rock typegreenschist
Other rock typesmica schist
Lithologic constituents
Major
Metamorphic > Schistchloritic schist, felsite, and quartz-feldspar-sericite schist.
Metamorphic > Metaigneous > Greenstone
Map references
Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272.
Unit references
Doll, C.G., Cady, W.M., Thompson, J.B., Jr., and Billings, M.P., 1961, Centennial Geologic Map of Vermont: Vermont Geological Survey, Miscellaneous Map MISCMAP-01, scale 1:250,000.
Geographic coverageOrange

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