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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Solstice Canyon Tongue*
  • Modifications:
    • Named
  • Dominant lithology:
    • Basalt
    • Andesite
    • Breccia
    • Tuff
  • 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:

Named as middle of three named tongues of Conejo Volcanics of Topanga Group. Type area designated as exposures at Solstice Canyon, Santa Monica Mountains, east-central Point Dune quad, Los Angeles Co, CA. Consists of basaltic andesitic flows, breccias, and tuffs. Thickness is 244 m. Overlies Latigo Canyon Breccia Member (new) (Calabasas Formation); intertongues with Dry Canyon Sandstone Member (new) (Calabasas Formation); underlies Malibu Bowl Tongue (new) (Conejo Volcanics). 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 ([ ]).