Usage:
Caballos Novaculite (TX*)
Geologic age:
Silurian to Mississippian*
Type section, locality, area and/or origin of name:
Type locality: Caballos [Horse] Mountain, the entire north face of which is made up of white Caballos novaculite, Brewster Co., Marathon region, west-central TX. Named from Horse (Caballos) Mountain, Brewster Co., west-central TX (Udden and others, 1916; Baker and Bowman, 1917).
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 ([ ]).