Usage:
Big Rock Member of Louisville Limestone (IN,KY)
Geologic age:
Silurian
Type section, locality, area and/or origin of name:
Type locality: in cliffs on west and east banks of Beargrass Creek, in Cherokee Park in eastern Louisville. Cliffs are 0.2 mi southwest of Cherokee Park Road-Seneca Park Road intersection, immediately west of Big Rock shelter house and approx. 1.3 mi southeast of Shanks quarry, Lat. 38 deg. 13 min. 57 sec. N., Long. 85 deg. 41 min. 03 sec. W., Louisville East quadrangle, Jefferson Co., north-central KY (Conkin and others, 1992).
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 ([ ]).