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Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member

Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member - Dark gray calcarenite succeeded by medium to light gray, buff-weathered silty, partly coquinal limestone.
StateVermont
NameMiddlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations, Valcour Member
Geologic ageOrdovician
Original map labelOmiv
CommentsPart of Champlain and Vermont Valleys, Chazy Group
Primary rock typecalcarenite
Secondary rock typelimestone
Other rock types
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)buff-weathered silty, partly coquinal limestone
Sedimentary > Clastic > Sandstone > Arenite > Calcarenite (Bed)
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 coverageAddison - Chittenden - Grand Isle

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