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National Geologic Map Database

Geologic Unit: Gila

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).