Usage:
Brazos River Formation of Strawn Group (TX)
Originally called Brazos Sandstone.
Geologic age:
Middle Pennsylvanian (Desmoinesian)*
Type section, locality, area and/or origin of name:
Named from widely distributed exposures along Brazos River, especially the high cliff at Inspiration Point, 8 mi due south of Mineral Wells, [Brazos River Valley area, Palo Pinto Co., central northern TX] (Plummer and Moore, 1922).
AAPG geologic province:
Bend arch*
Fort Worth syncline*
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 ([ ]).