Usage:
Rawlins Ash Bed of Ogallala Formation (KS)
Geologic age:
late Tertiary (Miocene)
Type section, locality, area and/or origin of name:
Named from exposures at center of west line of SW/4 sec. 4, T. 4 S., R. 34 W., Rawlins Co., northwestern KS (Swineford and others, 1955).
AAPG geologic province:
Las Animas 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 ([ ]).