Usage:
Dessau Formation of Austin Group (TX*)
Subunits:
(alphabetical) --all in TX: Pilot Knob tuff (informal, unranked), Schwertner Member.
Geologic age:
Late Cretaceous (Santonian to Campanian; Gulfian Provincial Epoch, Austinian Provincial Age)*
Type section, locality, area and/or origin of name:
Type locality: on branch of Big Walnut Creek, 7.6 mi north-northeast of State Capitol, Austin, Travis Co., central eastern TX (Durham, 1955).
AAPG geologic province:
Ouachita folded belt*
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 ([ ]).