Usage:
Walche Member of Menard Limestone (KY,IL)
Geologic age:
Late Mississippian (Chesterian)
Type section, locality, area and/or origin of name:
Type section: exposure in Walche's cut on Illinois Central RR, 3 mi northeast of Scottsburg and 3,500 ft west of Claxton, in southwest corner of 18-H-21, 6,400 ft from south line and 8,600 ft from east line of H-21, Princeton East quadrangle, Caldwell Co., western KY (Swann, 1963).
AAPG geologic province:
Illinois basin
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 ([ ]).