U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Bluffport

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 usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).