A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
| Santa Susana Formation | |
|---|---|
| Stratigraphic range: Late Paleocene-Early Eocene | |
| Type | Formation |
| Underlies | Meganos Formation |
| Overlies | Martinez Formation |
| Thickness | 1,000–1,500 ft (300–460 m) |
| Lithology | |
| Primary | Shale |
| Other | Sandstone, conglomerate |
| 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.[1][2][3]
The formation consists largely of light-gray shale and some fine-grained shaly sandstone, with a lens of heavy conglomerates in the lower part.[1][4] Small beds of limestone are also present.[5] It is from 1,000–1,500 feet (300–460 m) thick.[1][4]
Fossil content
The Santa Susana Formation preserves fossils from the Late Paleocene to Early Eocene epochs in the Paleogene period of the Cenozoic Era.[4][6] 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.[1][3][7]
See also
- Geology of Los Angeles County, California
- List of fossiliferous stratigraphic units in California
- Paleogene California
- Paleontology in California
References
- ^ a b c d USGS.gov: Geolex - Santa Susana Formation; accessed 8.15.2015
- ^ "A summary of work in progress on the Tertiary and Quaternary of western North America"; Clark, B.L.; Pan-Pacific Science Congress Proceedings, Australia, v. 1, p. 874-879 (1924); accessed 8.15.2015.
- ^ a b "A contribution to the paleontology of the Martinez Eocene of California"; Nelson, R. N.; University of California Publications in Geological Sciences v. 15, no. 11 (1925); ; accessed 8.15.2015.
- ^ a b c USGS.gov: "Preliminary geologic map of the Santa Susana quadrangle, Southern California"; R. F. Yerkes1 and R. H. Campbell; accessed 8.15.2015.
- ^ Campbell, R.H., Wills, C.J., Irvine, P.J., and Swanson, B.J., 2016. Preliminary geologic map of the Los Angeles 30' x 60' quadrangle, California.Version 2.1, California Geological Survey, Preliminary Geologic Maps PGM-13-06 https://ngmdb.usgs.gov/mapview/?center=-118.371,34.313&zoom=10
- ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
- ^ "Checklist of California Tertiary marine Mollusca"; Keen, A.M., and Bentson, Herdis; Geological Society of America Special Paper, 56, 280 p. (1944); late Paleocene through early Eocene; accessed 8.15.2015.
External linksedit
Media related to Santa Susana Formation (California) at Wikimedia Commons
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