- Source: Modelo Formation
The Modelo Formation is a Miocene geologic formation in the Simi Hills and western Santa Susana Mountains of southern California, including under parts of Los Angeles.
It preserves fossils dating back to the Late Miocene of the Neogene period, among them a high number of fossil representatives of modern pelagic and deep-sea fish taxa (as well as some with benthic affinities), in addition to some seabirds and cetaceans. As suggested from this fauna, the sediments of the formation were likely deposited in a deepwater marine habitat at middle to upper bathyal depths within an abyssal fan, with geological changes along the San Andreas fault causing a rapid uplift during the latest Miocene, bringing these former deepwater sediments to the surface. It is likely partially contemporaneous with the Monterey Formation in some areas, such as the Ventura Basin.
Volcanic ash beds are known from the formation; these, along with fossil microorganisms, indicate that the formation was deposited between 13 and 5.5 million years ago.
Paleobiota
Based on the Paleobiology Database and Fierstine et al (2012). Much of the fauna is shared with the Monterey Formation, though some distinct taxa are also known:
= Bony fish
=Many of these taxa were described by David Starr Jordan from specimens excavated during the construction of the Sepulveda Boulevard Tunnel through the Santa Monica Mountains.
= Birds
== Mammals
=See also
List of fossiliferous stratigraphic units in California
Paleontology in California
References
Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
Kata Kunci Pencarian:
- Havana
- Sierra Maestra
- Kamp konsentrasi Mauthausen-Gusen
- Modelo Formation
- Modelo
- Prowfish
- Chauliodus eximius
- Monterey Formation
- Simi Valley (valley)
- Aliso Canyon Oil Field
- Honor Rancho Oil Field
- Absalomichthys
- Topanga Canyon Formation
