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Map showing publication footprint
  • Usage in publication:
    • Saddle Peak Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Sandstone
    • Siltstone
    • Conglomerate
  • AAPG geologic province:
    • Transverse Ranges province
Publication:

Yerkes, R.F., and Campbell, R.H., 1979, Stratigraphic nomenclature of the central Santa Monica Mountains, Los Angeles County, California, IN Contributions to stratigraphy, 1979: U.S. Geological Survey Bulletin, 1457-E, p. E1-E30.


Summary:

Type locality: roadcuts along Piuma Road NE/4 sec.21 T1S R17W, southwest of Saddle Peak, Santa Monica Mountains, Malibu Beach quad, Los Angeles Co, CA. Is lower member (of 3) of Topanga Canyon Formation. Recognized in east Malibu Beach 7.5' quad. Consists of sandstone, sandy siltstone, and basal conglomerate. Sandstone is thick-bedded to massive, medium- to coarse-grained, pebbly and fossiliferous. Is 220 m thick. Conformably overlies Piuma Member (new) (Sespe Formation); conformably underlies Fernwood Member (new) (Topanga Canyon Formation). Is middle Miocene age.

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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