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Late Cenozoic Paleohydrology of the Western San Joaquin

Late Cenozoic Paleohydrology of the Western San Joaquin

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Full Title: Late Cenozoic Paleohydrology of the Western San Joaquin Valley, California

Authors: George H. Davis and Tyler B. Coplen


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The origin of uniform-quality, fresh ground water in the main confined aquifer of the San Joaquin Valley, California, sandwiched between poor-quality ground waters above and below, has long been an enigma. This paper applies isotopic chemistry, conventional chemistry, meteorology, and subsurface stratigraphy to develop a model of mid-Pleistocene paleometeorology of central California consistent with the chemistry of the confined waters and the hydrogeology of the area. The model has profound implications with respect to the isotopic character and amounts of precipitation during the early and mid-Pleistocene over the Sierra Nevada and the Great Basin to the east.

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Published: 6/22/1989

ISBN Number: 0813722349

Pages: 40

Product Category: Special Papers