Cobleskill Limestone

Bertie, Camillus, and Syracuse Formations - shale, dolostone; Brayman Shale.
State New York
Name Cobleskill Limestone
Geologic age Upper Silurian
Lithologic constituents
Sedimentary > Carbonate > Dolostone
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Mudstone > Shale
Comments part of Cobleskill Limestone and Salina Group 0-700 ft. (0-210 m). Descriptions from USGS Lexicon website (ref. NY046) and references NY030 and NY031: Bertie Group redefined. Author includes the Akron-Cobleskill interval and the newly named Moran Corner Waterlime in his revised Bertie Group. Term Rondout Formation is restricted to its type area in southeastern NY. In this report, Bertie Group in western NY subdivided into (ascending) Fort Hill Waterlime, Oatka Formation, Fiddlers Green Formation, Scajaquada Formation, Williamsville Formation, Cobleskill Formation-Akron Dolostone, and Moran Corner Waterlime. Fort Hill and Moran Corner Waterlimes absent in Ontario, CAN (Ciurca, 1990).

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.

Ciurca, S.J., Jr., 1990, Eurypterid biofacies of the Silurian-Devonian evaporite sequence; Niagara Peninsula, Ontario, Canada, and New York, IN Lash, G.G., ed., Western New York and Ontario; field trip guidebook: New York State Geological Association Guidebook, no. 62, 62nd Annual Meeting, Fredonia, NY, p.Sat/Sun D1-D30.

Heyman, Louis, 1977, Tully (Middle Devonian) to Queenston (Upper Ordovician) correlations in the subsurface of western Pennsylvania: Pennsylvania Geological Survey Mineral Resource Report, 4th series, no. 73, 2 charts.

USGS Geologic Names lexicon found at:

NGMDB product
Counties Herkimer - Montgomery - Oneida - Otsego - Schenectady - Schoharie