Chanac Formation
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| Chanac Formation | |
|---|---|
| Stratigraphic range: Neogene | |
| Type | Geological formation |
| Underlies | Etchegoin Formation, Kern River Beds Formation |
| Overlies | Santa Margarita Formation |
| Location | |
| Region | San Joaquin Valley, Kern County, California |
| Country | United States |
The Chanac Formation is a Cenozoic Era sandstone geologic formation in the southeastern San Joaquin Valley, within Kern County, California.[1]
Geology
[edit | edit source]The Kern River Series is divided into the lower Chanac Formation unit, and the upper Kern River Beds Formation unit, with the wedge of the Etchegoin Formation in the middle in the western section.[1] It is composed of sandstone and cobble conglomerate.[1] It overlies the Miocene period Santa Margarita Formation.
It preserves fossils dating back to the Neogene period.[2]
Fossil content
[edit | edit source]Mammals
[edit | edit source]Carnivorans
[edit | edit source]| Carnivorans reported from the Chanac Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Borophagus | B. littoralis | North Tejon Hills, Kern County, California.[3] | Left molar (LACM 16585).[3] | A borophagine dog also found in the Green Valley, Santa Margarita and Dove Spring formations. | |
| Epicyon | E. haydeni | North Tejon Hills, Kern County, California.[3] | Nuchal fragment of skull (LACM 16581).[3] | A borophagine dog. | |
See also
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- Geology of Kern County, California
- Neogene California
- List of fossiliferous stratigraphic units in California
- Paleontology in California
References
[edit | edit source]- ^ a b c USGS.gov: "The Kern River Formation, Southeastern San Joaquin Valley, California"; Geological Survey Bulletin 1529-D; By J. Alan Bartow and Gardner M. Pittman; United States Government Printing Office, Washington, D.C.; 1983 (with map on pg. D4).
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