Tecopa Mud Hills

Mud hills in Tecopa California, Mojave Desert

Along the boundaries the vegetation is dry and sparse. In the hills, nothing grows in the crusted ash.

During the late Pliocene and early Pleistocene, a climate that was appreciably wetter than today' s sustained a moderately deep lake in the Tecopa basin. Deposits associated with Lake Tecopa consist of lacustrine mudstone, conglomerate, volcanic ash, and shoreline accumulations of tufa. Age control within the lake deposits is provided by air-fall tephra that are correlated with two ash falls from the Yellowstone caldera, the Lava Creek (0.62 Ma) and Huckleberry Ridge (2.02 Ma) Tuffs, and one from the Long Valley caldera, the Bishop Tuff (0.73 Ma).

Ma. = million years ago

Source = LATE TERTIARY AND QUATERNARY GEOLOGY OF THE TECOPA BASIN, SOUTHEASTERN CALIFORNIA
By John W. Hillhouse

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Disclaimer: Some portions of this project were developed with assistance from AI tools to help reconstruct historical contexts and fill informational gaps. All materials have been reviewed and fact-checked to ensure accuracy and reliability, though complete precision cannot be guaranteed. The aim is to provide dependable starting points and distinctive perspectives for further study, exploration, and research.

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