Usage:
Chamisa Mesa Member of Zia Formation of Santa Fe Group (NM*)
Geologic age:
late Tertiary (early Miocene; Hemingfordian NALMA)*
Type section, locality, area and/or origin of name:
Type section: in sec. 25, T. 16 N., R. 2 E., and in sec. 30, T. 16 N., R. 3 E., Sandoval Co., north-central NM. Section is in Arroyo Pueblo drainage system. Named from Chamisa Mesa, a prominent basalt-capped mesa on the flanks of which a part of the beds of the member crop out (Galusha, 1966).
AAPG geologic province:
San Juan 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 ([ ]).