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National Geologic Map Database
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

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

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).