Usage:
No current usage.
(†/Falls City Shale (TX) considered abandoned. Replaced with Conquista Clay Member of †McElroy Formation (later replaced with Whitsett Formation) of Jackson Group. See Conquista.)
[Preoccupied. Name previously applied to Falls City Limestone by Condra and Bengston (1915) in NE and KS.]
Geologic age:
early Tertiary (late Eocene)
Type section, locality, area and/or origin of name:
Type locality: west of Falls City, in bed of San Antonio River, forming falls of the river, Karnes Co., southeastern TX (Ellisor, 1933).
AAPG geologic province:
Gulf Coast 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 ([ ]).