USGS Visual Identifier
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Geologic Unit: Sulphur Well

Sulphur Well Member of Lexington Limestone (KY*)

Ordovician, Middle*
Geologic Province:
Cincinnati arch*

Areal Extent:

Type Locality:
Exposures along Kentucky River fault in vicinity of Sulphur Well, southeastern Jessamine Co., KY (McFarlan, 1943).

Unit Name History:
Named Sulphur Well [member] of Cynthiana Formation (McFarlan, 1943).
Revised to Sulphur Well Member of Lexington Limestone (Cressman, 1968).
Overview (Cressman, 1973).
KY State Geol. Map usage (McDowell and others, 1981) [From GNC index card files; not synopsized].
Overview (Wahlman, 1992).
Age modified (Frey, 1995).

Note: If you need more information, please contact Nancy Stamm (
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

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

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
Database project personnel
Last modified: 15-Jan-2013