| Chatsworth Formation | |
|---|---|
| Stratigraphic range: Campanian & Maestrichtian epochs of Cretaceous | |
 Chatsworth Formation at Stoney Point California | |
| Type | Formation |
| Location | |
| Region | Los Angeles County and Ventura County, California |
| Country | United States |
| Extent | Simi 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
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]
- ringiculid Biplica
- naticids Gyrodes and Euspira
- trochid Atira
- aporrhaids Anchuras and Lispodesthes
- turritellid Turritella
- perissityid Perissitys
See also
- Stoney Point (California) — Chatsworth Formation landmark.
- Cretaceous California
- Geology of Los Angeles County, California
- List of fossiliferous stratigraphic units in California
- Paleontology in California
References
- 1 2 AAPG Archives: Paleographic Interpretation of the Chatsworth Formation
- ↑ Cleanuprocketdyne.org: Santa Susana Field Lab links to Chatsworth Formation groundwater contamination
- 1 2 USGS.gov: "Preliminary geologic map of the Santa Susana quadrangle, Southern California"
- ↑ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
- ↑ Overview of late cretaceous marine gastropods from the Simi Hills, by Mary Stecheson, Department of Geological Sciences, California State Univ, Northridge.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.