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Map showing publication footprint
  • Usage in publication:
    • Redrock Canyon sandstone member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Sandstone
    • Clay
    • Conglomerate
  • AAPG geologic province:
    • California Coast Ranges province
Publication:

English, W.A., 1916, Geology and oil prospects of Cuyama Valley, California: U.S. Geological Survey Bulletin, 621, p. 191-215, (incl. geologic map, scale 1:125,000)


Summary:

Redrock Canyon sandstone member named as basal member of Santa Margarita Formation for its limited occurrence in Redrock Canyon, Cuyama Valley [Caliente Mountain 15' quad], southwestern San Luis Obispo Co, CA. Consists of bright-red sandstone, clay, and conglomerate, having thickness of 500 ft. Unconformably overlies pre-Monterey rocks. Conformably underlies Whiterock Bluff shale member (new) of Santa Margarita Formation. Age given as Miocene on map legend.

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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