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National Geologic Map Database

Geologic Unit: Concha

Usage:

Concha Limestone of Naco Group (AZ*,NM*)
[?] Concha Limestone of Snyder Hill Group (AZ)


Geologic age:

Permian, Early*
Permian, Late(?)*


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

Type section: on east end of Concha Ridge, a conspicuous transverse spur of Scherrer Ridge in Gunnison Hills, in NW/4 sec. 28, T. 15 S., R. 23 E., central Cochise Co., southeastern AZ (Gilluly and others, 1954).
Reference section (composite): in Mustang Mountains, in SW/4 sec. 14, and NE/4 sec. 15, T. 20 S., R. 18 E., Santa Cruz Co., AZ (Bryant and McClymonds, 1961).


AAPG geologic province:

Pedregosa basin*
Basin-and-Range province*


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