No current usage.
(†Rio Grande series (NM), also called †Albuquerque series, replaced with Santa Fe Formation. See Santa Fe.)
late Tertiary
Notable exposures in vicinity of Albuquerque, central northern NM (Herrick, 1898).
Estancia 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 ([ ]).