- Usage in publication:
-
- Gullette Bluff beds
- Modifications:
-
- Named
- Dominant lithology:
-
- Sand
- Marl
- AAPG geologic province:
-
- Mid-Gulf Coast basin
Summary:
Named Gullette Bluff beds of Wilcox group applied to all of Nanafalia formation above unfossiliferous "Coal Bluff beds." Thickness 60 to 175 ft. 168 ft thick at type locality. Lower 50 ft characterized by GRYPHAEA THIRSAE. Overlies "Coal Bluff beds" consisting at the top of 20 ft of white to yellow cross-bedded massive sands with blue clay lenses. Age is early Eocene.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Gullette Bluff beds
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Mid-Gulf Coast basin
Summary:
Gullette Bluff beds listed as uppermost unit of Nanafalia formation. Overlie "Nanafalia Landing (OSTREA THIRSAE) marl." Toulmin (1940: Alabama Geological Survey Bulletin 46, p. 28) noted that Nanafalia formation, as restricted by Cooke (1933: American Assoc. Petroleum Geologists Bulletin, v. 17, no. 2) is equivalent to Gullette Bluff beds of Brantly (1920).
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Gullette Bluff
- Modifications:
-
- Not used
- AAPG geologic province:
-
- Mid-Gulf Coast basin
Summary:
Middle and upper divisions of Nanafalia of Smith and Johnson (1887) are equivalent to the "Gullette Bluff beds" of Brantly (1920), and in present report comprise middle and Grampian Hills members of Nanafalia.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).