Beekmantown Group

Mohawk Valley: Chuctanunda Creek Dolostone; Tribes Hill Formation-limestone, dolostaone; Gailor Dolostone. Washington County: Providence Island Dolostone; Fort Cassin Formation-limestone, dolostone; Fort Ann Formation-limestone, dolostone; Cutting Formation-dolostone, local chert, limestone at top, siltstone at base.
State New York
Name Beekmantown Group
Geologic age Lower Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > LimestoneTribes Hill Formation-limestone, dolostaone; Fort Cassin Formation-limestone, dolostone; Fort Ann Formation-limestone, dolostone; Cutting Formation- limestone at top
Sedimentary > Carbonate > Dolostone
Incidental
Sedimentary > Chemical > ChertCutting Formation-local chert
Sedimentary > Clastic > SiltstoneCutting Formation- siltstone at base.
Comments part of Beekmantown and Stockbridge Groups, Potsdam Sandstone, and Vermont Valley Sequence up to 3500 ft. (1100 m).
References

Fisher, D.W., Isachsen, Y.W., and Rickard, L.V., 1970, Geologic Map of New York State, consisting of 5 sheets: Niagara, Finger Lakes, Hudson-Mohawk, Adirondack, and Lower Hudson, New York State Museum and Science Service, Map and Chart Series No. 15, scale 1:250,000.

NGMDB product
Counties Fulton - Herkimer - Montgomery - Saratoga - Schenectady