Helderberg Group

Coeymans and Manlius Limestones; Rondout Dolostone.
State New York
Name Helderberg Group
Geologic age Lower Devonian
Lithologic constituents
Sedimentary > Carbonate > Limestone
Sedimentary > Carbonate > Dolostone
Comments 0-200 ft. (0-60 m).

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 Cayuga - Madison - Oneida - Onondaga - Seneca