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      Pacific subduction control on Asian continental deformation including Tibetan extension and eastward extrusion tectonics

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          Abstract

          The India-Asia collision has formed the highest mountains on Earth and is thought to account for extensive intraplate deformation in Asia. The prevailing explanation considers the role of the Pacific and Sunda subduction zones as passive during deformation. Here we test the hypothesis that subduction played an active role and present geodynamic experiments of continental deformation that model Indian indentation and active subduction rollback. We show that the synchronous activity and interaction of the collision zone and subduction zones explain Asian deformation, and demonstrate that east-west extension in Tibet, eastward continental extrusion and Asian backarc basin formation are controlled by large-scale Pacific and Sunda slab rollback. The models require 1740 ± 300 km of Indian indentation such that backarc basins form and central East Asian extension conforms estimates. Indentation and rollback produce ~260–360 km of eastward extrusion and large-scale clockwise upper mantle circulation from Tibet towards East Asia and back to India.

          Abstract

          The India-Asia collision has formed the highest mountains on Earth and is associated with extensive intraplate deformation. Here, the authors present geodynamic experiments of continental deformation across Central, East, and Southeast Asia which suggest that the Pacfic and Sunda subduction zones played an active role during intraplate deformation.

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          Most cited references72

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          India–Eurasia collision chronology has implications for crustal shortening and driving mechanism of plates

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            Quaternary extension in southern Tibet: Field observations and tectonic implications

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              Tethyan subducted slabs under India

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                Author and article information

                Contributors
                w.p.schellart@vu.nl
                Journal
                Nat Commun
                Nat Commun
                Nature Communications
                Nature Publishing Group UK (London )
                2041-1723
                2 October 2019
                2 October 2019
                2019
                : 10
                : 4480
                Affiliations
                [1 ]ISNI 0000 0004 1754 9227, GRID grid.12380.38, Department of Earth Sciences, , Vrije Universiteit Amsterdam, ; Amsterdam, Netherlands
                [2 ]ISNI 0000 0004 1936 7857, GRID grid.1002.3, School of Earth, Atmosphere and Environment, , Monash University, ; Melbourne, VIC 3800 Australia
                [3 ]ISNI 0000 0001 2191 0132, GRID grid.410588.0, Japan Agency for Marine-Earth Science and Technology, ; Yokohama, Japan
                [4 ]ISNI 0000 0001 2181 4263, GRID grid.9983.b, Instituto Dom Luiz (IDL), Faculdade de Ciências, , Universidade de Lisboa, ; Lisboa, Portugal
                [5 ]ISNI 0000 0001 2181 4263, GRID grid.9983.b, Departamento de Geologia, Faculdade de Ciências, , Universidade de Lisboa, ; Lisboa, Portugal
                Author information
                http://orcid.org/0000-0002-9802-0143
                http://orcid.org/0000-0002-8664-8419
                http://orcid.org/0000-0001-7505-3690
                http://orcid.org/0000-0002-6734-2916
                Article
                12337
                10.1038/s41467-019-12337-9
                6775058
                31578324
                dded7a63-9704-4aa3-9674-64ede1e50bdd
                © The Author(s) 2019

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 5 April 2019
                : 4 September 2019
                Categories
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                © The Author(s) 2019

                Uncategorized
                geodynamics,geology,tectonics
                Uncategorized
                geodynamics, geology, tectonics

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