Mule Spring Limestone (CA*,NV*)
Mule Spring Formation (CA,NV)
Early Cambrian*
Type section: along east end of Walcott's (1908, Smithsonian Miscellaneous Colln., v. 53, no. 5) Waucoba Spring section, east of Waucoba Springs, on Saline Valley road, east of Inyo Range, Inyo Co., central CA. Named from exposures at Mule Spring on west flank of Inyo Mountains, Waucoba Mountain quadrangle, CA (Nelson, 1962). Best section on ridge, in sec. 27, T. 11 S., R. 37 E., but is faulted (Ross, 1967).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).