Usage:
Cabullona Group (Mexico)
Subunits:
(ascending) Snake Ridge Formation, Camas Sandstone, Packard Shale.
Geologic age:
Late Cretaceous
Type section, locality, area and/or origin of name:
Named from its occurrence in the valley of Cabullona Creek, west of Cabullona, northeastern Sonora, Mexico (Taliaferro, 1933).
AAPG geologic province:
Cabullona 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 ([ ]).