Usage:
Big Bug Group (AZ*)
Subunits:
(alphabetical) --all in AZ*: Green Gulch Volcanics, Iron King Volcanics, Spud Mountain Volcanics.
Geologic age:
Paleoproterozoic*
Type section, locality, area and/or origin of name:
Type locality: along Big Bug Creek, which originates west of Big Bug Mesa in the Mount Union quadrangle and joins the Agua Fria River in the Mayer quadrangle, central AZ (Anderson and others, 1971).
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 ([ ]).