Usage:
No current usage.
(†Gueydan Formation (TX) or †Gueydan Ash Member of Catahoula Formation (TX) considered abandoned. Is same as Catahoula Tuff. See Catahoula.)
Geologic age:
Oligocene and Miocene(?)
Type section, locality, area and/or origin of name:
Named from exposures on Gueydan Ranch and survey, in southeastern part of McMullen Co., southern TX coastal plain (Bailey, 1924, 1926).
AAPG geologic province:
Gulf Coast 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 ([ ]).