Stony Point Formation

Dark-gray calcareous shale with beds of bluish-gray limestone. Rocks of the Laurentian Margin. Part of the Adirondack lowlands and Lake Champlain lowlands (west of the Orwell and Champlain thrusts). Also part of the Vermont Valley sequence and Middlebury synclinorium (above the Orwell and Champlain thrusts).
State Vermont
Name Stony Point Formation
Geologic age Upper Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed, Calcareous)Dark-gray calcareous shale with beds of bluish-gray limestone.
Sedimentary > Carbonate > Limestone (Bed)Dark-gray calcareous shale with beds of bluish-gray limestone.
References
NGMDB product
Counties Addison - Chittenden - Grand Isle - Rutland