Usage:
Cornishville Bed of Perryville Limestone Member of Lexington Limestone (KY*)
Geologic age:
Late Ordovician (Mohawkian; Chatfieldian; Shermanian)*
Type section, locality, area and/or origin of name:
Named from Cornishville, Mercer Co., central KY (Foerste, 1912).
Reference section: in small abandoned quarry 0.4 mi south of Perryville, on east side of road that meets intersection of U.S. Highways 150 and 68 in Perryville, Boyle Co., KY. State coordinates, south zone, E. 2,222,200 ft, N. 478,500 ft (Cressman, 1973).
AAPG geologic province:
Cincinnati arch*
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 ([ ]).