Usage:
Wristen Group (TX)
Wristen Formation (TX)
Subunits:
GROUP STATUS (alphabetical) --all in TX: Fasken Formation, Frame Formation, Wink Formation.
FORMATION STATUS (alphabetical) --all in TX: Wink Member, Frame Member.
Geologic age:
late Silurian
Type section, locality, area and/or origin of name:
Type section (subsurface): Gulf Oil Corp. 5-SI Wristen Bros. [well], in sec. 18, Blk. 5, H and T Survey, Wickett field, Ward Co., TX (Hills and Hoenig, 1979).
AAPG geologic province:
Permian 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 ([ ]).