|Name||Pulaski and Whetstone Gulf Formations|
|Geologic age||Upper Ordovician|
Sedimentary > Clastic > Siltstone
Sedimentary > Clastic > Mudstone > Shale
|Comments||part of Lorraine, Trenton, and Black River Groups up to 1600 ft. (490 m). Secondary unit description from USGS website (ref. NY046) and reference NY035: Pulaski Formation of Late Ordovician age (Cincinnatian, Maysvillian to early Richmondian) is used in report. Nautiloid taxa of Maysvillian to early Richmondian strata on OH [Bull Fork Formation according to fig. 2] are also characteristic of "Lorraine fauna" of Foerste (1914). This fauna also is found in coeval Pulaski Formation in NY and Georgian Bay Formation in southern Ontario (Frey, 1995).|
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.
Frey, R.C., 1995, Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati arch region of Kentucky, Indiana, and Ohio, IN Pojeta, John, Jr., ed., Contributions to the Ordovician paleontology of Kentucky and nearby states: U.S. Geological Survey Professional Paper, 1066-P, p. P1-P126.
USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/
|Counties||Jefferson - Lewis - Oneida - Oswego|