Type Formation Named for Santa Susana, California Underlies Meganos Formation | Country United States Overlies Martinez Formation | |
Thickness 1,000–1,500 feet (300–460 m) Region Los Angeles County and Ventura County, California Extent Simi Hills, Santa Susana Mountains | ||
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.
Fossils
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.
References
Santa Susana Formation Wikipedia(Text) CC BY-SA