Usage:
No current usage.
(†Hart School Bed of Sedwick Limestone Member of Moran Formation of Cisco Group (TX) considered discarded.)
Geologic age:
early Permian (Asselian and Sakmarian; Wolfcampian)
Type section, locality, area and/or origin of name:
Notable exposures on road at Hart School, sec. 2969, T.E. and L. survey, 6 mi north of Putnam, [Callahan Co.], Brazos River region, 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 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 ([ ]).