|Name||Undifferentiated Lower Devonian and Silurian rocks|
|Geologic age||Lower Devonian - Silurian|
|Comments||400-1000 ft. (120-300 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.
|Counties||Orange - Sullivan - Ulster|