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National Geologic Map Database

Geologic Unit: Barrel Spring

Usage:

Barrel Spring Formation (CA*)
Barrel Spring Formation of Eureka Group (CA)


Geologic age:

Late Ordovician (late Whiterockian to Mohawkian; late Chazyan to Turinian)*


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

Type section: Mexican Gulch [unnamed on present topo map], first tributary to Mazourka Canyon north of Bonanza Gulch, in Inyo National Forest, Independence 15-min quadrangle, Inyo Co., CA [approx. Lat. 36 deg. 55 min. 54 sec. N., Long. 118 deg. 03 min. 48 sec. W., Mazourka Peak 7.5-min quadrangle] (Phleger, 1933; Ross, 1965; 1966).
Named from exposures along east side of Mazourka Canyon, in Inyo National Forest (Phleger, 1933).


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 ([ ]).