Topanga Canyon Formation Explained

Topanga Canyon Formation
Type:	Formation
Age:	Neogene
Period:	Neogene
Region:	Santa Monica Mountains Los Angeles County, California
Country:	United States
Underlies:	Modelo Formation

The Topanga Canyon Formation is a Miocene epoch geologic formation in the Santa Monica Mountains, Simi Hills, Santa Ana Mountains and San Joaquin Hills, in Los Angeles County, Ventura County, and Orange County, southern California.^[1] It is primarily composed of hard sandstone with some inter-bedded siltstone.

Fossils

It preserves fossils dating back to the Miocene epoch of the Neogene period, during the Cenozoic Era.^{[2] [3]}

See also

• • List of fossiliferous stratigraphic units in California
• Paleontology in California

References

Notes and References

1. http://pubs.usgs.gov/of/1997/of97-259/ USGS.gov: "Preliminary Geologic Map of the Simi 7.5' Quadrangle, Southern California, A Digital Database"
2. Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021.
3. Web site: Topanga Formation | Invertebrate Paleontology @ NHM.