Usage:
Chalk Hills Member of Catahoula Formation (LA)
Geologic age:
Oligocene
Type section, locality, area and/or origin of name:
Notable exposures in the Chalk Hills through secs. 7, 16, 17, 18 and 21, T. 10 N., R. 5 E., Catahoula Parish, east-central LA (Chawner, 1936).
AAPG geologic province:
Arkla 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 ([ ]).