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National Geologic Map Database

Geologic Unit: Gueydan

Usage:

No current usage.
(†Gueydan Group (TX) considered obsolete.)


Geologic age:

Oligocene and early Miocene(?)


Type section, locality, area and/or origin of name:

[Name applied to Oligocene and early Miocene(?) strata in southern TX coastal plain by F.B. Plummer (1933).]


AAPG geologic province:

Gulf Coast 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 ([ ]).