Usage:
Rosarito Beach Formation (CA, Mexico)
Subunits:
In Mexico: Mira al Mar Member, Costa Azul Member, Amado Nervo Member, Las Glorias Member, Los Buenos Member.
In California: Otay Member, Sweetwater Member.
Geologic age:
late Tertiary (Miocene)
Type section, locality, area and/or origin of name:
Type sections (of members): in Tijuana-Rosarito Beach area, Baja California, Mexico (Minch, 1967); also, in US, along south side of Sweetwater Valley (Sweetwater Member), and northeeast side of Chester Canyon (Otay Member), San Diego Co., CA (Kuper and Gastil, 1977).
AAPG geologic province:
Peninsular Ranges province
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 ([ ]).