Edwards Formation (TX)
Edwards Limestone of Fredericksburg Group (TX*)
Edwards Group (TX-recognized on eastern Edwards Plateau)
GROUP STATUS (alphabetical) --all in TX: Fort Terrett Formation, Kainer Formation, Person Formation, Segovia Formation.
late Early Cretaceous (Albian; Comanchean Provincial Epoch)*
Type locality: Barton Creek, near Austin, [Travis Co.], southern TX (Adkins, 1932).
Named from Edwards Plateau, Nueces and Uvalde quadrangles, southwestern TX, of which it is chief component of scarps and mesas (US geologic names lexicons, USGS Bull. 896, 1200).
Gulf Coast basin*
Ouachita folded belt*
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 ([ ]).