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Mineral Resources On-Line Spatial Data

Stony Point Formation

Stony Point Formation - Predominantly calcareous black shale that grades upward into argillaceous limestone and rare dolomite beds, in northwestern Vermont.
NameStony Point Formation
Geologic ageOrdovician
Original map labelOsp
CommentsPart of Champlain and Vermont Valleys, Trenton Group
Primary rock typeblack shale
Secondary rock typelimestone
Other rock typesdolostone (dolomite)
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Calcareous)predominantly calcareous black shale
Sedimentary > Carbonate > Limestone (Bed)argillaceous limestone
Sedimentary > Carbonate > Dolostone (Bed)rare dolomite beds
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 - Grand Isle

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