Usage:
Hall Summit Formation of Wilcox Group (LA)
Hall Summit Formation (TX)
Subunits:
(alphabetical): Bistineau Member (LA,TX), Grand Bayou Member (LA,TX), Loggy Bayou Member (LA,TX), Mayous Bayou Member (LA).
Geologic age:
Paleocene
Type section, locality, area and/or origin of name:
Type locality: exposures in vicinity of village of Hall Summit in T. 14 N., R. 9 W., Red River Parish, LA (Murray and Thomas, 1945).
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 ([ ]).