Usage:
McRae Formation (NM*-recognized locally in Fra Cristobal Range)
Subunits:
(alphabetical) --all in NM: Hall Lake Member, Jose Creek Member.
Geologic age:
Late Cretaceous to early Tertiary*
Type section, locality, area and/or origin of name:
Type locality: around base of Elephant Butte [Lat. 33 deg. 09 min. 24 sec. N., Long. 107 deg. 11 min. 04 sec. W.] and along most of the eastern shoreline of Elephant Butte Reservoir for several mi north of the dam, [Elephant Butte 7.5-min quadrangle], Sierra Co., southwestern NM. Named from old Fort McRae, located in an eastern tributary of the Rio Grande about 3 mi north of Elephant Butte [Lat. 33 deg. 11 min. 28 sec. N., Long. 107 deg. 08 min. 38 sec. W., Elephant Butte 7.5-min quadrangle] (Kelley and Silver, 1952).
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 ([ ]).