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Mineral Resources On-Line Spatial Data

Iberville Formation

Iberville Formation - Noncalcareous black shale interbedded with occasional dolomite beds and in the lower part with calcareous shale.
NameIberville Formation
Geologic ageOrdovician
Original map labelOi
CommentsPart of Champlain and Vermont Valleys, Trenton Group
Primary rock typeblack shale
Secondary rock typedolostone (dolomite)
Other rock types
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shale (Bed)Noncalcareous black shale; lower part with calcareous shale
Sedimentary > Carbonate > Dolostone (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.
CountiesAddison - Chittenden - Franklin - Grand Isle

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