Briarcliff Dolostone and Pine Plains Formation

Briarcliff - locally cherty; Pines Plains - dolostone, shale, oolite.
State New York
Name Briarcliff Dolostone and Pine Plains Formation
Geologic age Cambrian
Lithologic constituents
Sedimentary > Carbonate > Dolostone
Sedimentary > Clastic > Mudstone > ShalePine Plains Formation
Sedimentary > Chemical > ChertBriarcliff-locally cherty
Comments part of Wappinger and Stockbridge Groups, Poughquag Quartzite, and Metamorphic Equivalents up to 4000 ft. (1200 m). Age changed to Late Cambrian as per USGS Lexicon website (ref. NY046) according to reference NY007.

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.

Knopf, E.B., 1956, Stratigraphy and structure of the Stissing area, Dutchess County, New York [abs.]: Geological Society of America Bulletin, v. 67, no. 12, pt. 2, p. 1817-1818.

USGS Geologic Names lexicon found at:

NGMDB product
Counties Columbia - Dutchess - Orange