Rosario Group
The Rosario Group is a Late Cretaceous geologic group in southwestern California and northwestern Baja California. In older literature it was named Rosario Formation.
The Cretaceous aged formations of the Rosario Group include the Point Loma Formation, Cabrillo Formation and Lusardi Formation, in ascending order.
The sedimentary structures of the Rosario Group apparently were formed in a nearshore shelf environment, probably a local embayment.