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National Geologic Map Database

Geologic Unit: Perdido

Usage:

Perdido Group (CA*-notably in Cottonwood Mountains area)


Subunits:

(alphabetical) --all in CA*: Leaning Rock Formation, Mexican Spring Formation.


Geologic age:

Early to Middle Mississippian (Tournaisian to Visean; Osagean to Meramecian)*


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

Type locality: extending south from Perdido Canyon, Inyo Co., eastern CA. In the canyon, a fault between Perdido and Rest Springs formations cuts out uppermost part of Perdido, but this segment is well exposed south of Rest Spring. Type locality is supplemented by a second locality, about 3,000 ft south of Rest Spring (McAllister, 1952).
Named from Perdido Canyon, where formation is exposed from foot of southern wall, about 9,000 feet southeast of Quartz Spring, over hill to underlying Tin Mountain limestone (McAllister, 1952).


AAPG geologic province:

Great Basin 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 ([ ]).