From HandWiki - Reading time: 3 min
| 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 (/tʊˈlɛəri/ (
listen)) is a Pliocene to Holocene epoch geologic formation in the central and southern San Joaquin Valley of central California .[1][2]
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]
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]