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  • Usage in publication:
    • Indian Gulch [formation]
  • Modifications:
    • Named
  • Dominant lithology:
    • Conglomerate
    • Tuff
    • Sandstone
  • AAPG geologic province:
    • Sierra Nevada province
Publication:

Taliaferro, N.L., 1933, Bedrock complex of the Sierra Nevada, west of the southern end of the Mother Lode [abs.]: Geological Society of America Bulletin, 45th annual meeting, Cambridge, MA, December 28-30, 1932, v. 44, no. 1, p. 149.


Summary:

Name proposed for the basal formation of Mariposa group on Merced River and southward into Indian Gulch 15-min quadrangle, Mariposa County, California. Consists of agglomerates, tuffs, sandstones and conglomerates. Thickness 3,500 feet. Underlies Mariposa slates (of /Mariposa group). Unconformably overlies Tuolumne [later Amador] group. Age is Mesozoic.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


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 ([ ]).

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