Usage:
No current usage.
(Rocks of †Keller Group (NM-notably in Oscura Mountains) reallocated to Atrasado Formation of Madera Group. See Atrasado.)
Geologic age:
Late Pennsylvanian (Virgilian)
Type section, locality, area and/or origin of name:
Type locality: northeast side of Oscura Mountains, in NE/4 sec. 31, T. 5 S., R. 6 E., and west-central part of sec. 32, [approx. Lat. 33 deg. 50 min. 09 sec. N., Long. 106 deg. 20 min. 56 sec. W., Garden Spring Canyon 7.5-min quadrangle], Socorro Co., central NM. Named from Keller Spring, 2 mi east of South Oscura Peak (Thompson, 1942).
AAPG geologic province:
Orogrande 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 ([ ]).