No current usage.
(†Andrew Shale (unranked) in Douglas Formation (IA,KS,MO,NE) abandoned.)
Late Pennsylvanian
Named from Andrew Co., northwestern MO (Keyes, 1899).
Forest City basin
Nemaha anticline
Anadarko 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 ([ ]).