Short description: Early Pleistocene geologic formation in California, United States
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.
See also
List of fossiliferous stratigraphic units in California
Paleontology in California
References
↑California Geological Survey: Geologic Map of the Sacramento Quadrangle
↑California Division of Mines and Geology.ca..gov: "The GEOLOGY, GEOMORPHOLOGY, and SOILS of the SAN JOAQUIN VALLEY in the VICINITY of the MERCED RIVER, CALIFORNIA.", by RODNEY J. ARKLEY
Lecturer and Specialist in the Agricultural Experiment Station, Department of Soils and Plant Nutrition, University of California, Berkeley, California.
((Various Contributors to the Paleobiology Database)). "Fossilworks: Gateway to the Paleobiology Database". http://www.fossilworks.org/cgi-bin/bridge.pl?action=home.
v
t
e
Quaternary Period
Pleistocene Epoch
Holocene Epoch
Early
Middle
Late
Meghalayan
Northgrippian
Greenlandian
Preboreal
Boreal
Atlantic
Subboreal
Subatlantic
v
t
e
Geological history of Earth
Cenozoic era (present–66.0 Mya)
Quaternary (present–2.588 Mya)
Holocene (present–11.784 kya)
Pleistocene (11.784 kya–2.588 Mya)
Neogene (2.588–23.03 Mya)
Pliocene (2.588–5.333 Mya)
Miocene (5.333–23.03 Mya)
Paleogene (23.03–66.0 Mya)
Oligocene (23.03–33.9 Mya)
Eocene (33.9–56.0 Mya)
Paleocene (56.0–66.0 Mya)
Mesozoic era (66.0–251.902 Mya)
Cretaceous (66.0–145.0 Mya)
Late (66.0–100.5 Mya)
Early (100.5–145.0 Mya)
Jurassic (145.0–201.3 Mya)
Late (145.0–163.5 Mya)
Middle (163.5–174.1 Mya)
Early (174.1–201.3 Mya)
Triassic (201.3–251.902 Mya)
Late (201.3–237 Mya)
Middle (237–247.2 Mya)
Early (247.2–251.902 Mya)
Paleozoic era (251.902–541.0 Mya)
Permian (251.902–298.9 Mya)
Lopingian (251.902–259.8 Mya)
Guadalupian (259.8–272.3 Mya)
Cisuralian (272.3–298.9 Mya)
Carboniferous (298.9–358.9 Mya)
Pennsylvanian (298.9–323.2 Mya)
Mississippian (323.2–358.9 Mya)
Devonian (358.9–419.2 Mya)
Late (358.9–382.7 Mya)
Middle (382.7–393.3 Mya)
Early (393.3–419.2 Mya)
Silurian (419.2–443.8 Mya)
Pridoli (419.2–423.0 Mya)
Ludlow (423.0–427.4 Mya)
Wenlock (427.4–433.4 Mya)
Llandovery (433.4–443.8 Mya)
Ordovician (443.8–485.4 Mya)
Late (443.8–458.4 Mya)
Middle (458.4–470.0 Mya)
Early (470.0–485.4 Mya)
Cambrian (485.4–541.0 Mya)
Furongian (485.4–497 Mya)
Miaolingian (497–509 Mya)
Series 2 (509–521 Mya)
Terreneuvian (521–541.0 Mya)
Proterozoic eon (541.0 Mya–2.5 Gya)
Neoproterozoic (541.0 Mya–1 Gya)
Ediacaran (541.0–~635 Mya)
Cryogenian (~635–~720 Mya)
Tonian (~720 Mya–1 Gya)
Mesoproterozoic (1–1.6 Gya)
Stenian (1–1.2 Gya)
Ectasian (1.2–1.4 Gya)
Calymmian (1.4–1.6 Gya)
Paleoproterozoic (1.6–2.5 Gya)
Statherian (1.6–1.8 Gya)
Orosirian (1.8–2.05 Gya)
Rhyacian (2.05–2.3 Gya)
Siderian (2.3–2.5 Gya)
Archean eon (2.5–4 Gya)
Eras
Neoarchean (2.5–2.8 Gya)
Mesoarchean (2.8–3.2 Gya)
Paleoarchean (3.2–3.6 Gya)
Eoarchean (3.6–4 Gya)
Hadean eon (4–4.6 Gya)
kya = thousands years ago. Mya = millions years ago. Gya = billions years ago.
See also: Geologic time scale
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