Usage:
Word Formation (TX*)
Subunits:
(alphabetical) --all in TX*: Appel Ranch Member, China Tank Member, Vidrio Limestone Member, Willis Ranch Member.
Geologic age:
Permian, Early*
Guadalupian, early*
Type section, locality, area and/or origin of name:
Not designated. Origin of name not stated by authors, but probably named from development around Word Ranch in the Glass Mountains, Brewster Co., TX (Udden and others, 1916).
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 ([ ]).