Usage:
Peerless Park Member of Keokuk Limestone (IL,MO)
Geologic age:
Mississippian, Early
Osagean
Type section, locality, area and/or origin of name:
Type section: southeast side of a St. Louis and San Francisco RR spur, south of Meramec River, Route 44, St. Louis Co., MO (Brenckle and Carter, 1990).
AAPG geologic province:
Ozark uplift
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 ([ ]).