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National Geologic Map Database

Geologic Unit: San Andres

Usage:

San Andres Limestone (NM*,TX*)
San Andres Formation (AZ,NM,TX)
San Andres Group (NM)
Originally spelled San Andreas.


Subunits:

GROUP STATUS (alphabetical) --all in NM: Glorieta Sandstone, Lagunita Formation.
FORMATION STATUS (alphabetical): Bonney Canyon Member (NM), Fourmile Draw Member (NM), Glorieta Sandstone Member (NM), Hondo Sandstone Member (NM*), Lovington Member (NM) or Lovington Sandstone Member (NM,TX), Rio Bonito Member (NM).


Geologic age:

Permian, Early*
Leonardian*
Guadalupian, early*


Type section, locality, area and/or origin of name:

Type locality: at north end of San Andreas [San Andres] Mountains, central NM (Lee, 1909).
Type section: south wall of Rhodes Canyon 2 mi west of road fork at top of Rhodes Pass and 14.6 mi by road east of Continental Airlines beacon near Engle. Canyon extends from near middle of north line of sec. 29, T. 12 S., R. 2 E., Sierra Co., central NM. Inquiry established that canyon referred to by Lee is one now known as Rhodes Canyon, San Andres Mountains, Socorro Co. (Needham and Bates, 1943).


AAPG geologic province:

Estancia basin
Las Vegas-Raton basin*
Orogrande basin*
Palo Duro basin*
Permian basin
San Juan basin


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).