Timing of Tibetan uplift constrained by analysis of volcanic rocks

Details Timing of Tibetan uplift constrained by analysis of volcanic rocks Timing of Tibetan uplift constrained by analysis of volcanic rocks

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.364...50t&link_type=abstract

Nature (ISSN 0028-0836), vol. 364, no. 6432, p. 50-54.

Physics

69

Cenozoic Era, Climate Change, Paleoclimatology, Rock Mechanics, Volcanoes, Lithosphere, Magma, Tibet

Scientific paper

New geochemical data are presented for postmid-Miocene lavas from the Tibetan plateau which indicate their lithospheric mantle origin. Thermal considerations show that a thinning of the lithospheric mantle is associated with the generation of such magmas; volcanism is therefore coincident with uplift, furnishing a climate-independent means of dating the onset of uplift. Ar-40/Ar-39 dating places the volcanism and associated uplift at 13 million years ago.

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