Timms Point Silt
The Timms Point Silt comprises silts and sands that overly Miocene rocks and underly the San Pedro Sands on the Palos Verdes Peninsula of Los Angeles County. It is regarded as Middle Pleistocene in age (between approximately 500,000 and 200,000 years old). The Timms Point Silt is richly fossiliferous with molluscs, foraminifera, bryozoans, and ostracods, in addition to vertebrates (e.g., fish otoliths, teeth). Surface exposures of the Timms Point Silt occur in San Pedro and along the Palos Verdes Hills, although are now rare with most historically collected outcrops having been destroyed by urban development. The unit may still be sampled near Timms Point along the San Pedro waterfront. The Timms Point Silt is generally characterized by offshore (50-200 m water depth) faunal assemblages. Molluscs found in the marl include many cool water (typically found north of present-day Los Angeles) species.