Usage:
Chiapuk Rhyolite (AZ*)
Geologic age:
Late Cretaceous (Campanian to Maastrichtian)*
Type section, locality, area and/or origin of name:
Type locality: about 2 mi west of Reward Mine, Vekol Mountains, Papago Indian Reservation, southwestern Pinal Co., southwestern AZ. Named from nearby village of Chiapuk (Heindl, 1965).
AAPG geologic province:
Basin-and-Range province*
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 ([ ]).