Bluff Dale Sand of Trinity Group (TX)
Early Cretaceous (Comanchean Provincial Epoch)
Named from Bluff Dale, Erath Co., central northern TX, where the sands supply artesian wells (US geologic names lexicons, USGS Bull. 896, 1200).
Strawn 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 ([ ]).