Topanga Formation

Topanga Canyon Formation
Topanga Canyon Formation
Stratigraphic range: Neogene
Type	Formation
Underlies	Modelo Formation
Location
Region	Santa Monica Mountains; Los Angeles County, California
Country	United States

The Topanga Canyon Formation (/təˈpæŋɡə/ ^ⓘ) 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]

References

^ USGS.gov: "Preliminary Geologic Map of the Simi 7.5' Quadrangle, Southern California, A Digital Database"; Open-File Report 97-259; compiled by R.F. Yerkes and R.H. Campbell; 1997.
^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
^ "Topanga Formation | Invertebrate Paleontology @ NHM".

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[usgssimi-1] USGS.gov: "Preliminary Geologic Map of the Simi 7.5' Quadrangle, Southern California, A Digital Database"; Open-File Report 97-259; compiled by R.F. Yerkes and R.H. Campbell; 1997.

[2] Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

[3] "Topanga Formation | Invertebrate Paleontology @ NHM".

[1]

[2]

[3]

Fossils

See also

References