Asymmetric exhumation of the Mount Everest region: Implications for the tectono-topographic evolution of the Himalaya

作者：Carrapa B; Robert X; DeCelles P G; Orme D A; Thomson S N; Schoenbohm L M

来源：Geology, 2016, 44(8): 611-614.

DOI：10.1130/G37756.1

The tectonic and topographic history of the Himalaya-Tibet orogenic system remains controversial, with several competing models that predict different exhumation histories. Here, we present new low-temperature thermochronological data from the Mount Everest region, which, combined with thermal-kinematic landscape evolution modeling, indicate asymmetric exhumation of Mount Everest consistent with a scenario in which the southern edge of the Tibetan Plateau was located > 100 km farther south during the mid-Miocene. Northward plateau retreat was caused by erosional incision during the Pliocene. Our results suggest that the South Tibetan Detachment was a localized structure and that no coupling between precipitation and erosion is required for Miocene exhumation of Greater Himalayan Sequence rocks on Mount Everest.

• 出版日期2016-8