Oriskany Formation

{{Short description|Geological formation in the United States}}

{{Infobox rockunit

| name = Oriskany Sandstone

| image =

| caption =

| type = Formation

| age = Eifelian

| period = Eifelian

| prilithology = Sandstone

| otherlithology =

| namedfor = Oriskany Falls, New York

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| region = Appalachian Basin of eastern North America

| country = United States

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| underlies = Bois Blanc Formation, Huntersville Chert, Needmore Shale, and Onondaga Formation

| overlies = Helderberg Group and Shriver Chert

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}}

The Oriskany Sandstone is a Middle Devonian age unit of sedimentary rock found in eastern North America. The type locality of the unit is located at Oriskany Falls in New York.Vanuxem, L., 1839, Third annual report of the geological survey of the Third District: New York Geological Survey, Annual Report 3, p. 241-285. The Oriskany Sandstone extends throughout much of the Appalachian Basin.Ryder, R.T., Swezey, C.S., Crangle, R.D., Jr., and Trippi, M.T., 2008, Geologic cross section E-E’ through the central Appalachian Basin from the Findlay Arch, Wood County, Ohio, to the Valley and Ridge Province, Pendleton County, West Virginia: U.S. Geological Survey Scientific Investigations Map SIM-2985, 2 sheets with 48-page pamphlet. https://pubs.er.usgs.gov/publication/sim2985Ryder, R.T., Crangle, R.D., Jr., Trippi, M.H., Swezey, C.S., Lentz, E.E., Rowan, E.L., and Hope, R.S., 2009, Geologic cross section D-D’ through the central Appalachian basin from the Findlay arch, Sandusky County, Ohio, to the Valley and Ridge province, Hardy County, West Virginia: U.S. Geological Survey Scientific Investigations Map SIM-3067, 2 sheets with 52-page pamphlet. https://pubs.er.usgs.gov/publication/sim3067Ryder, R.T., Trippi, M.H., Swezey, C.S., Crangle, R.D., Jr., Hope, R.S., Rowan, E.L., and Lentz, E.E., 2012, Geologic cross section C-C’ through the central Appalachian basin from near the Findlay Arch, north-central Ohio, to the Valley and Ridge Province, Bedford County, south-central Pennsylvania: U.S. Geological Survey Scientific Investigations Map SIM-3172, 2 sheets with 70-page pamphlet. https://pubs.er.usgs.gov/publication/sim3172

The unit name usage by the U.S. Geological Survey (USGS) is the Oriskany Sandstone.See unit names marked by an asterisk at [https://ngmdb.usgs.gov/Geolex/Units/Marcellus_2635.html Geolex]

Butts (1940) stated that the Oriskany Sandstone "corresponds exactly with the Ridgely Sandstone" and that the rules of stratigraphic nomenclature dictate that the name Oriskany Sandstone should be applied to these strata.Butts, C., 1940, Geology of the Appalachian Valley in Virginia: Virginia Geological Survey Bulletin 52, pt. 1, 568p.