Chatsworth Formation
Cretaceous geologic formation in Southern California
From Wikipedia, the free encyclopedia
The Chatsworth Formation is a Cretaceous period sandstone geologic formation in the Simi Hills and western Santa Susana Mountains of southern California.[1] [2]
TypeFormation
RegionLos Angeles County and Ventura County, California
CountryUnited States
ExtentSimi Hills, Santa Susana Mountains
| 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 |
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
