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Trenton Group

Trenton Group - dark, crystalline, nodular, and argillaceous limestones, with some metabentonite streaks. Includes the Nealmont, Oranda, Edinburg, and the upper part of the Chambersburg Limestones of northeastern West Virginia; also the Moccasin and Eggleston Formation of Mercer and Monroe Counties.
StateWest Virginia
NameTrenton Group
Geologic ageOrdovician
Original map labelOt
CommentsThickness: Northeastern 470-660 ft, Western 635 ft, Southeastern 450 ft
Primary rock typelimestone
Secondary rock typebentonite
Other rock types
Lithologic constituents
Major
Sedimentary > Carbonate > Limestonedark, crystalline, nodular, and argillaceous limestones
Incidental
Sedimentary > Clastic > Mudstone > Claystone > Bentonitesome metabentonite streaks
Map references
Digital version of 1968 printed map available from http://wvgis.wvu.edu/data/data.php with the specific data available from http://wvgis.wvu.edu/data/dataset.php?action=search&ID=43
Unit references
Cardwell, D.H., Erwin, R.B., and Woodward, H.P., 1968 (slightly revised 1986), Geologic Map of West Virginia: West Virginia Geological and Economic Survey, Map 1, East Sheet, scale 1:250,000.
Geographic coveragePendleton

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