Black River Group

Chaumont Limestone-chert; Lowville Limestone; Pamelia Dolostone.
State New York
Name Black River Group
Geologic age Middle Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone
Minor
Sedimentary > Chemical > Chert
Sedimentary > Carbonate > Dolostone
Comments part of Lorraine, Trenton, and Black River Groups up to 4500 ft. (1400 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 - Oneida