Usage:
Waldron Shale (KY*,IN*)
Waldron Formation (IN)
Waldron Formation of Wayne Group (TN*)
Waldron Shale of Wayne Group (TN)
Waldron Clay Member of Wayne Formation (TN*)
Waldron Member of Pleasant Mills Formation (IN)
Geologic age:
Silurian*
Type section, locality, area and/or origin of name:
Waldron, Shelby Co., IN.
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 ([ ]).