- Usage in publication:
-
- Ramera Canyon Tongue*
- Modifications:
-
- Named
- Dominant lithology:
-
- Breccia
- AAPG geologic province:
-
- Transverse Ranges province
Summary:
Named as lowermost of three named tongues of Conejo Volcanics (Topanga Group), which are recognized only in upper plate of Malibu Bowl detachment fault. Type area designated as Ramera Canyon, Santa Monica Mountains, east-central Point Dume quad, Los Angeles Co, CA. Consists of basaltic and andesitic breccia, tuff-breccia, and flows(?), 518 m thick. Overlies Topanga Canyon Formation (new) (Topanga Group); underlies and interfingers with Escondido Canyon Shale and Dry Canyon Sandstone Members (both new) (both of Calabasas 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 ([ ]).