Usage:
Hells Mesa Tuff (NM*)
Hells Mesa Rhyolite (NM)
Hells Mesa Member of Datil Formation (NM)
Geologic age:
early Tertiary (early Oligocene; Rupelian)*
Type section, locality, area and/or origin of name:
Type section (revised and remeasured): about 3.6 mi northwest of Hells Mesa, in sec. 36, T. 2 N., R. 5 W., and sec. 31, T. 2 N., R. 4 W., Socorro Co., central NM (Osburn and Chapin, 1983).
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 ([ ]).