| Turlock Lake Formation Stratigraphic range: Early Pleistocene | |
|---|---|
| Type | Geologic formation |
| Underlies | Riverbank Formation |
| Overlies | Mehrten Formation, North Merced Pediment and Gravels |
| Lithology | |
| Primary | Granitic sand over stratified silt |
| Location | |
| Region | Sacramento County, California |
| Country | United States |
The Turlock Lake Formation is an Early Pleistocene geologic formation in the Sierra Nevada foothills in Sacramento County, California. Cities in/over the formation's area include Citrus Heights, Carmichael, and Roseville. [1]
The Turlock Lake Formation is a fan deposit of dominantly granitic alluvium covering the westward extension of the North Merced Pediment and Gravels formation, and directly overlying the Mehrten Formation. [2]
It preserves Early Pleistocene Quaternary period fossils.
Platygonus is an extinct genus of herbivorous peccaries of the family Tayassuidae, endemic to North and South America from the Miocene through Pleistocene epochs, existing for about 10.289 million years. P. compressus stood 2.5 feet tall.
The Serra Fault is the northernmost fault in a zone of northwest-striking range front thrust faults adjacent to and northeast of the San Francisco Peninsula segment of the San Andreas Fault, in eastern San Mateo County, California.
The Blanco Formation, originally named the Blanco Canyon Beds, is an early Pleistocene geologic formation of clay, sand, and gravel whitened by calcium carbonate cementation and is recognized in Texas and Kansas.
The Camp Rice Formation is a geologic formation in west Texas and southern New Mexico. It preserves fossils of the Pliocene-Pleistocene. These include the distinctive Tonuco Mountain Local Fauna.
The Alamosa Formation is a geologic formation in Colorado. It preserves fossils. The formation was deposited by Lake Alamosa, a paleolake that existed from the Pliocene to the middle Pleistocene.
The Merced Formation is a geologic formation in California, and also in Oregon and Washington state. It is named for Lake Merced, a natural lake on the western San Francisco coastline.
The Bragdon Formation is a geologic formation in California. It preserves fossils dating back to the Carboniferous period. Its sandstones may be rich in quartz, chert and sedimentary rock fragments, or volcanic rock fragments, or volcanic ash (tuff) containing abundant crystals. Gravelly, loamy brown soils of the Hugo series are commonly developed on Bragdon parent material in the Trinity Lake area.
The Funks Shale is a geologic formation in the Sacramento Valley of northern California.
The Mulholland Formation is a Pliocene epoch geologic formation in the Berkeley Hills and San Leandro Hills of the East Bay region of the San Francisco Bay Area, California. It is found within Alameda County and Contra Costa County.
The Purisima Formation is a geologic formation in California. It preserves fossils dating from the Late Miocene to Early Pleistocene.
The Santa Clara Formation is a geologic formation in the southeastern Santa Cruz Mountains, in Santa Clara County, California.
The Capay Formation is a geologic formation in Yolo County, western Sacramento Valley, California. It preserves fossils dating back to the Paleogene period.
The Martinez Formation is an Eocene Epoch geologic formation in California.
The Tejon Formation is a Paleogene period geologic formation in California.
The Brawley Formation is a geologic formation in the Colorado Desert of southern California, located in northwestern Imperial County and eastern San Diego County.
The Lomita Marl is a geologic formation in Los Angeles County, southern California.
The San Benito Gravels is a Quaternary Epoch geologic formation in California.
The Tecopa Lake Beds is a Blancan Pleistocene geologic formation in the Mojave Desert in eastern California. It is in the Tecopa area, east of Death Valley, in southeastern Inyo and northeastern San Bernardino County.
The Palm Spring Formation is a Pleistocene Epoch geologic formation in the eastern Colorado Desert of Imperial County and San Diego County County, Southern California.
The Ocotillo Formation is a Pliocene fluvial-alluvial fan geologic formation in the Colorado Desert of Southern California.
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