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National Geologic Map Database

Geologic Unit: Hart School

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 ([ ]).