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Geologic Unit: Genesee
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Map showing publication footprint
  • Usage in publication:
    • Genesee slate
  • Modifications:
    • Named
  • Dominant lithology:
    • Shale
  • AAPG geologic province:
    • Appalachian basin
Publication:

Vanuxem, Lardner, 1842, Geology of New York; Part III, Survey of the third geological district: New York State Museum, 306 p.


Summary:

Named the Genesee slate for the abundant exposures along the Genesee River and Valley, NY. Consists of black argillaceous fissile mudrock. It is the Black shale and slate and Upper Black slate of previous reports. Thickness is 100 ft. Genesee underlies Portage or Nunda group and overlies the Tully limestone. Unit is of Late Devonian age.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Genesee Formation*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Appalachian basin
Publication:

de Witt, Wallace, Jr., Roen, J.B., and Wallace, L.G., 1993, Stratigraphy of Devonian black shales and associated rocks in the Appalachian basin, IN Roen, J.B., and Kepferle, R.C., eds., Petroleum geology of the Devonian and Mississippian black shale of eastern North America: U.S. Geological Survey Bulletin, 1909-B, p. B1-B57.


Summary:

Genesee Formation extended from southwestern NY and western PA into eastern OH and northern WV.

Source: GNU records (USGS DDS-6; Reston GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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