Hosselkus Limestone
The Hosselkus Limestone is an Upper Triassic fossiliferous marine micritic limestone formation that outcrops in Plumas and Shasta Counties, California. It is known for its invertebrate fauna, most notably the many species of shelled cephalopods.
| Hosselkus Limestone | |
|---|---|
| Stratigraphic range: Late Triassic, | |
Weathered portions of the Hosselkus Limestone | |
| Type | Geological formation |
| Thickness | up to 140 feet (40 m) |
| Lithology | |
| Primary | Limestone |
| Other | granite, slate, sandstone |
| Location | |
| Coordinates | 40.06°N 120.72°W |
| Region | California |
| Country | United States |
| Type section | |
| Named for | Hosselkus Creek, Plumas County, California |
| Named by | Diller, J. S. |
| Year defined | 1892 |
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