Usage:
No current usage.
(Rocks of †Pecos Formation (NM-recognized locally in Roswell artesian basin) reallocated to Artesia Group. See Artesia.)
Geologic age:
Middle Permian (Guadalupian)
Type section, locality, area and/or origin of name:
Named from exposures east of Pecos River, [Chaves and Eddy Cos.], Roswell artesian basin, southeastern NM (Fiedler and Nye, 1933).
AAPG geologic province:
Permian 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 ([ ]).