Usage:
Rhyolite Canyon Tuff (AZ*-recognized locally in Cochise Co.)
Geologic age:
Oligocene*
Type section, locality, area and/or origin of name:
Best exposed in Rhyolite Canyon from which it is named, Chiricahua National Monument, Cochise Co., southeastern AZ (Enlows, 1951, 1955; see also Drewes, 1982).
Type area: Chiricahua National Monument, Cochise Co., southeastern AZ (Pallister and others, 1994).
AAPG geologic province:
Pedregosa 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 ([ ]).