Usage:
Gila Formation (AZ*,NM*)
Gila Conglomerate (AZ*,NM*)
Subunits:
(alphabetical) --all in AZ; informal: Bonita beds, Frye Mesa beds, Solomonsville beds.
Geologic age:
late Tertiary (Miocene to Pliocene?)*; locally Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
Notable exposures along the gorges of the upper Gila River and its tributaries, AZ and NM (Gilbert, 1875).
AAPG geologic province:
Basin-and-Range 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 ([ ]).