Admiral Formation of Wichita Group (TX*)
Admiral Formation of Albany Group (TX-notably south of Wichita River)
GROUP STATUS (alphabetical) --all in TX: Fisk Formation, Hordes (Hords) Creek Formation.
FORMATION STATUS (alphabetical) --all in TX*: Hordes Creek Limestone Member, Lost Creek Shale Member, Overall Limestone Member, Wildcat Creek Shale Member.
early Permian (Asselian and Sakmarian; Wolfcampian)*
Named from village of Admiral, 10 mi east of town of Baird, Callahan Co., central TX (Plummer and Moore, 1922).
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 ([ ]).