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  • Usage in publication:
    • Mesa Peak Breccia Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Breccia
  • 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: Mesa Peak, sec.24, T1S, R18W, Santa Monica Mountains, west central Malibu Beach quad, Los Angeles Co, CA. Consists of breccia containing angular fragments of volcanic rock in very coarse grained sandstone. Is 288 m thick. Is second youngest member (of 6) of Calabasas Formation. Conformably overlies Newell Sandstone Member (new) (Calabasas Formation); upper contact not exposed [or may unconformably underlies Modelo Formation]; in fault contact with Sespe and Topanga Canyon Formations. 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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