Santa Susana Formation
| Santa Susana Formation Stratigraphic range: Late Paleocene to Early Eocene of Paleogene |
|
|---|---|
| Type | Formation |
| Underlies | Meganos Formation |
| Overlies | Martinez Formation |
| Thickness | 1,000–1,500 feet (300–460 m) |
| Location | |
| Region | Los Angeles County and Ventura County, California |
| Country | United States |
| Extent | Simi Hills, Santa Susana Mountains |
| Type section | |
| Named for | Santa Susana, California |
The Santa Susana Formation is a Paleogene period geologic formation in the Simi Hills and western Santa Susana Mountains of southern California.
The formation consists largely of light-gray shale and some fine-grained shaly sandstone, with a lense of heavy conglomerates in the lower part. It is from 1,000–1,500 feet (300–460 m) thick.
The Santa Susana Formation preserves fossils from the Late Paleocene to Early Eocene epochs in the Paleogene period of the Cenozoic Era. Fossilized fauna in the Santa Susana Formation is entirely different from that of underlying Martinez Formation, and has very little in common with that of the overlying Meganos Formation.
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