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National Geologic Map Database

Geologic Unit: South Bend

Usage:

No current usage.
(†South Bend Sandstone and Shale Member of Graham Formation of Cisco Group (TX) replaced with Necessity Shale Member. See Necessity.)


Geologic age:

Pennsylvanian


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

Typically exposed at South Bend, southern Young Co., central northern TX (Plummer and Moore, 1922).


AAPG geologic province:

Bend arch


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 ([ ]).