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Chatsworth Formation

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Chatsworth Formation
Stratigraphic range: Campanian & Maestrichtian epochs of Cretaceous
Chatsworth Formation at Stoney Point California
TypeFormation
Location
RegionLos Angeles County and Ventura County, California
CountryUnited States
ExtentSimi Hills, Santa Susana Mountains

The Chatsworth Formation is a Cretaceous period sandstone geologic formation in the Simi Hills and western Santa Susana Mountains of southern California.[1] [2]

It is found in western Los Angeles County and eastern Ventura County. The formation's thickness can be more than 610 metres (2,000 ft).[3]

Fossils

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The sedimentary marine formation preserves fossils dating from the Middle Campanian to Early Maestrichtian epochs of the Cretaceous period.[1][4] It has diverse molluscan faunas.[3]

The most common taxa are:[5]

See also

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References

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  1. ^ a b AAPG Archives: Paleographic Interpretation of the Chatsworth Formation
  2. ^ Cleanuprocketdyne.org: Santa Susana Field Lab links to Chatsworth Formation groundwater contamination
  3. ^ a b USGS.gov: "Preliminary geologic map of the Santa Susana quadrangle, Southern California"
  4. ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
  5. ^ Overview of late cretaceous marine gastropods from the Simi Hills, by Mary Stecheson, Department of Geological Sciences, California State Univ, Northridge.