Tulare Formation
| Tulare Formation Stratigraphic range: Neogene & Quaternary | |
|---|---|
| Type | Formation |
| Underlies | (is topmost formation) |
| Overlies | San Joaquin Formation |
| Thickness | up to 4,000 feet (1,200 m) |
| Location | |
| Region | San Joaquin Valley, California |
| Country | United States |
The Tulare Formation is a Pliocene to Holocene epoch geologic formation in the central and southern San Joaquin Valley of central California.[1][2]
Geology
It overlies the San Joaquin Formation, and can be up to 4,000 feet (1,200 m) thick.[1][2]
Its sediments consist mainly of unconsolidated deposits of clay, silt, sand, and gravel.[1]
Fossils
Many freshwater fossils are preserved in the formation, dating back to the Neogene and Quaternary Periods of the Cenozoic Era.[3] They include the largest fossil assemblage of clams and snails known on the Pacific Coast.[1]
See also
- Neogene California
- List of fossiliferous stratigraphic units in California
- Paleontology in California
References
- 1 2 3 4 USGS.gov: "Geology of the Tulare Formation and other continental deposits, Kettleman City area, San Joaquin Valley, California, with a section on ground-water management considerations and use of texture maps"; Water-Resources Investigations Report 83-4000; by R.W. Page; 1983.
- 1 2 USGS.gov: "Neogene Gas Total Petroleum System—Neogene Nonassociated Gas Assessment Unit of the San Joaquin Basin Province"; Chapter 22 of the Petroleum Systems and Geologic Assessment of Oil and Gas in the San Joaquin Basin Province, California; by Allegra Hosford Scheirer and Leslie B. Magoon.
- ↑ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.
| Neogene Period | |||
|---|---|---|---|
| Miocene | Pliocene | ||
| Aquitanian | Burdigalian Langhian | Serravallian Tortonian | Messinian |
Zanclean | Piacenzian | ||
| Quaternary | ||
|---|---|---|
| Pleistocene | Holocene | |
| Early | Middle | Late | Preboreal | Boreal | Atlantic | Subboreal | Subatlantic | |
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