Camillus, Syracuse, and Vernon Formations

Shale, dolostone, salt, and gypsum.
State New York
Name Camillus, Syracuse, and Vernon Formations
Geologic age Upper Silurian
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Chemical > Evaporite > Gypsum
Sedimentary > Clastic > Mudstone > Shale > Black-shale
Sedimentary > Chemical > Evaporite > Salt
Sedimentary > Carbonate > Dolostone
Comments part of Akron Dolostone and Salina group 400-700 ft. (120-210 m). Secondary description from USGS Lexcion website (ref. NY046) and references NY030 and NY031: Named Vernon shale member of Salina formation. Consists of red and green shales, gray gypsiferous shales, and thin platten dolomites. Underlies Syracuse salt and overlies Pittsford shale. [Later reports give thicknesses of 150 feet (at type locality) to 700 feet (in central NY).] Age is Silurian. Vernon Formation of Salina Group contains at least four eurypterid-bearing black shale horizons in western NY here described as lowermost(?) Harris Hill Bed (new name) at East Penfield, and Monroeav (new name), Pittsford (revised), and Barge Canal (new name) Beds at Pittsford, NY. Beds vary in thickness from approximately 1 ft for the Harris Hill to 7 ft for the Monroeav Bed. A thin dolomitic interval in the type area of the Vernon Formation in central NY containing eurypterids and fish remains is here named the Downing Brook Bed (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.

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:

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.

NGMDB product
Counties Erie - Genesee - Monroe - Niagara - Ontario - Orleans