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National Geologic Map Database

Geologic Unit: Grier

Usage:

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


Subunits:

(alphabetical) --all in KY*: Cane Run Bed, /Macedonia Bed.


Geologic age:

Late Ordovician (Mohawkian; Chatfieldian; Kirkfieldian to Shermanian)*


Type section, locality, area and/or origin of name:

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).


AAPG geologic province:

Cincinnati arch*


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 ([ ]).