Usage:
Datil Group (NM*)
Datil Formation (AZ*?,NM*)
Datil Volcanics (AZ?,NM)
Subunits:
GROUP STATUS (alphabetical) --all in NM: Blue Canyon Tuff*, Datil Well Tuff*, Kneeling Nun Tuff*, Pueblo Creek Formation*, Rock House Canyon Tuff*, Spears Formation, Whitewater Creek Rhyolite.
FORMATION STATUS (alphabetical) --all in NM: Caballo Blanco Rhyolite Tuff Member*, Hells Mesa Member, [?]La Jara Peak Member.
Geologic age:
early Tertiary (Oligocene)*
Type section, locality, area and/or origin of name:
Named for fact it is the mountain-forming series of Datil Mountains, [Alamocita Creek Valley], [Catron and] Socorro Cos., southwestern NM (Winchester, 1920).
Winchester's section measured at the north end of Bear Mountains, in secs. 4, 5, 8, and 9, T. 1 N., R. 4 W., Socorro Co., southwestern NM (US geologic names lexicon, USGS Bull. 1200).
AAPG geologic province:
Basin-and-Range 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 ([ ]).