Origin of high mountains in the continents: The Southern Sierra Nevada

Brian Wernicke, Robert Clayton, Mihai Ducea, Craig H. Jones, Stephen Park, Stan Ruppert, Jason Saleeby, J. Kent Snow, Livia Squires, Moritz Fliedner, George Jiracek, Randy Keller, Simon Klemperer, James Luetgert, Peter Malin, Kate Miller, Walter Mooney, Howard Oliver, Robert Phinney

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201 Scopus citations

Abstract

Active and passive seismic experiments show that the southern Sierra, despite standing 1.8 to 2.8 kilometers above its surroundings, is underlain by crust of similar seismic thickness, about 30 to 40 kilometers. Thermobarometry of xenolith suites and magnetotelluric profiles indicate that the upper mantle is eclogitic to depths of 60 kilometers beneath the western and central parts of the range, but little subcrustal lithosphere is present beneath the eastern High Sierra and adjacent Basin and Range. These and other data imply the crust of both the High Sierra and Basin and Range thinned by a factor of 2 since 20 million years ago, at odds with purported late Cenozoic regional uplift of some 2 kilometers.

Original languageEnglish (US)
Pages (from-to)190-193
Number of pages4
JournalScience
Volume271
Issue number5246
DOIs
StatePublished - Jan 1 1996
Externally publishedYes

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    Wernicke, B., Clayton, R., Ducea, M., Jones, C. H., Park, S., Ruppert, S., Saleeby, J., Snow, J. K., Squires, L., Fliedner, M., Jiracek, G., Keller, R., Klemperer, S., Luetgert, J., Malin, P., Miller, K., Mooney, W., Oliver, H., & Phinney, R. (1996). Origin of high mountains in the continents: The Southern Sierra Nevada. Science, 271(5246), 190-193. https://doi.org/10.1126/science.271.5246.190