USGS Visual Identifier
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Geologic Unit: Grier

Grier Limestone Member of Lexington Limestone (KY*,OH)

Ordovician, Middle*
Geologic Province:
Cincinnati arch*

Areal Extent:

Type Locality:
Type section: exposures along the Shyrock Ferry Road from 0.5 to 0.75 mi south southwest of Grier Creek Church, southern part of Tyrone quadrangle, central KY. Named from Grier Creek (Cressman, 1964).

Macedonia and Cane Run Beds (KY*)

Unit Name History:
[Please note: only the Cressman (1964) and post-1981 references include synopses here. The remaining references have yet to be added from the GNC index card files. Until then, feel free to contact us if you would like complete bibliographic citations.]
Named Grier Limestone Member of Lexington Limestone (Cressman, 1964).
Revised (Black and others, 1965).
Extended into OH (Luft and others, 1973).
KY State Geol. Map usage (McDowell and others, 1981).
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