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Geologic Unit: Sulphur Well
Map showing publication footprint
  • Usage in publication:
    • Sulphur Well [member]
  • Modifications:
    • Named
  • AAPG geologic province:
    • Cincinnati arch
Publication:

McFarlan, A.C., 1943, Geology of Kentucky; Celebrating the 75th anniversary of the University of Kentucky: University of Kentucky, 531 p.


Summary:

Named Sulphur Well [member] of Cynthiana Formation.

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


Map showing publication footprint
  • Usage in publication:
    • Sulphur Well*
  • Modifications:
    • Revised
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Cressman, E.R., 1968, Geologic map of the Salvisa quadrangle, central Kentucky: U.S. Geological Survey Geologic Quadrangle Map, GQ-760, 1 sheet, scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_2066.htm]


Summary:

Sulphur Well [member] of Cynthiana Formation of McFarlan (1943) revised as Sulphur Well Member of Lexington Limestone.

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


Map showing publication footprint
  • Usage in publication:
    • Sulphur Well Member*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Cressman, E.R., 1973, Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky: U.S. Geological Survey Professional Paper, 768, 61 p.


Summary:

Comprehensive description of Lexington Limestone including that of Sulphur Well Member. Includes cross sections showing relationships of Millersburg Member to adjacent units.

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


Map showing publication footprint
  • Usage in publication:
    • Sulphur Well Member*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Wahlman, G.P., 1992, Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati arch region, IN Pojeta, John, Jr., ed., Contributions to the Ordovician paleontology of Kentucky and nearby states: U.S. Geological Survey Professional Paper, 1066-O, p. O1-O203.


Summary:

The Sulphur Well Member of the Lexington Limestone consists of poorly sorted bryozoan calcirudite with a calcitic to dolomitic matrix and thin shale partings; brachiopods also are common. Thickness is 35 feet. Overlies the Brannon or Tanglewood Limestone Members of the Lexington Limestone and underlies the Clays Ferry Formation. The environment of deposition is interpreted to be moderately agitated, normal marine.

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


Map showing publication footprint
  • Usage in publication:
    • Sulphur Well Member*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Cincinnati arch
Publication:

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.


Summary:

Sulphur Well Member of Lexington Limestone is Champlainian (Shermanian) in age.

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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