Mount Merino and Indian River Formations

Shale, slate, cherts.
State New York
Name Mount Merino and Indian River Formations
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Metamorphic > Metasedimentary > Metaclastic > Slate
Incidental
Sedimentary > Chemical > Chert
Comments part of Eugeosynclinal (Allochthonous) Sequence up to 6000 ft.? (2000 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 Columbia - Dutchess - Greene - Rensselaer - Saratoga - Ulster - Washington