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National Geologic Map Database

Geologic Unit: Walche

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 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 ([ ]).