Usage:
Bluffport Marl Member of Demopolis Chalk (AL*,MS*)
Bluffport Marl Member of Demopolis Formation (TN)
Geologic age:
Late Cretaceous (Campanian to Maastrichtian; Gulfian Provincial Epoch)*
Type section, locality, area and/or origin of name:
Type locality: on Bluffport Road about 6.5 mi due east of Livingston, in NW/4 sec. 27, T. 19 N., R. 1 W., Sumter Co., west-central AL. Named from Bluffport Bluff along Tombigbee River (Monroe, 1956).
AAPG geologic province:
Black Warrior 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 ([ ]).