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Santa Cruz Mudstone

Deep marine depositsFluvial depositsGeologic formations of CaliforniaMessinianMudstone formations
Neogene CaliforniaPaleontology in CaliforniaTortonian

The Santa Cruz Mudstone is a geologic formation in California. The siliceous organic mudstones of the formation were deposited in deep water and fluvial environments. The formation overlies the Santa Margarita Sandstone and is overlain by the Purisima Formation. The Santa Cruz Mudstone was formerly considered part of the Monterey Formation. The formation preserves bivalve and echinoid fossils as well as vertebrates of Parabalaenoptera baulinensis and Otodus megalodon. The formation dates back to the Late Miocene (Tortonian to Messinian) period.

Excerpt from the Wikipedia article Santa Cruz Mudstone (License: CC BY-SA 3.0, Authors).

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Latitude Longitude
N 37.1 ° E -122.3 °
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San Mateo County (San Mateo)



California, United States
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