Usage:
Carrizo Mountain Formation (TX*)
/Carrizo Mountain group (informal) (TX)
For informal usage, the rank or lithologic term should not be capitalized. [A "group" consists of 2 or more formations (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021).]
Geologic age:
Mesoproterozoic*
Type section, locality, area and/or origin of name:
Named from Carrizo Mountains, El Paso Co. [now in Hudspeth Co.], TX (von Streeruwitz, 1891).
AAPG geologic province:
Southwestern Basin-and-Range region*
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 ([ ]).