Usage:
Georgetown Limestone of Washita Group (AR*,OK?,TX*, and LA*-subsurface)
Georgetown Formation of Washita Group (TX*)
Georgetown Formation of Atascosa Group (TX-subsurface)
Subunits:
(alphabetical): Denton Shale Member (TX), Duck Creek Member (TX), Fort Worth Member (TX), Kiamichi Clay Member (AR,OK?,TX), Main Street Member (TX), Pawpaw Shale Member (TX), Weno Member (TX).
Geologic age:
late Early Cretaceous (Albian)*
Type section, locality, area and/or origin of name:
Not synopsized to date.
AAPG geologic province:
Ouachita folded belt*
Permian 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 ([ ]).