Normanskill Shale

Minor mudstone, sandstone.
State New York
Name Normanskill Shale
Geologic age Middle Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Minor
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone
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 Albany - Columbia - Greene - Rensselaer - Saratoga - Schenectady