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Articles | Volume 9, issue 5
Articles | Volume 9, issue 5
https://doi.org/10.5194/se-9-1061-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-9-1061-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 9, issue 5
Research article
 | 
10 Sep 2018
Research article |  | 10 Sep 2018

Channel flow, tectonic overpressure, and exhumation of high-pressure rocks in the Greater Himalayas

Fernando O. Marques, Nibir Mandal, Subhajit Ghosh, Giorgio Ranalli, and Santanu Bose

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Short summary
We couple Himalayan tectonics to numerical simulations to show how upward-tapering channel (UTC) flow can be used to explain the evidence. The simulations predict high tectonic overpressure (TOP > 2), which increases exponentially with a decrease in UTC mouth width, and with increase in velocity and channel viscosity. The highest TOP occurs at depths < −60 km, which, combined with the flow in the UTC, forces high-pressure rocks to exhume along the channel’s hanging wall, as in the Himalayas.
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