Differentiation of Continental Subduction Mode: Numerical Modeling

Yang Tuoxin; Huangfu Pengpeng; Zhang Yan

doi:10.1007/s12583-017-0946-y

Volume 30 Issue 4

Aug 2019

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Journal of Earth Science > 2019 > 30(4): 809-822.

Yang Tuoxin, Huangfu Pengpeng, Zhang Yan. Differentiation of Continental Subduction Mode: Numerical Modeling. Journal of Earth Science, 2019, 30(4): 809-822. doi: 10.1007/s12583-017-0946-y

Citation:

Yang Tuoxin, Huangfu Pengpeng, Zhang Yan. Differentiation of Continental Subduction Mode: Numerical Modeling. Journal of Earth Science, 2019, 30(4): 809-822. doi: 10.1007/s12583-017-0946-y

Yang Tuoxin, Huangfu Pengpeng, Zhang Yan. Differentiation of Continental Subduction Mode: Numerical Modeling. Journal of Earth Science, 2019, 30(4): 809-822. doi: 10.1007/s12583-017-0946-y

Citation:

Yang Tuoxin, Huangfu Pengpeng, Zhang Yan. Differentiation of Continental Subduction Mode: Numerical Modeling. Journal of Earth Science, 2019, 30(4): 809-822. doi: 10.1007/s12583-017-0946-y

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Differentiation of Continental Subduction Mode: Numerical Modeling

doi: 10.1007/s12583-017-0946-y

1.
Guangdong Provincial Key Lab of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou 510275, China; Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
2.
Key Laboratory of Computational Geodynamics, College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Funds:

the NSFC Project 41622404

the NSFC Project 41704091

the Strategic Priority Research Program (B) of Chinese Academy of Sciences XDB18000000

the NSFC Project 41688103

the 973 Project 2015CB856106

the NSFC Project U1701641

More Information

Corresponding author: Yan Zhang
Received Date: 13 Jul 2018
Accepted Date: 23 Nov 2018
Publish Date: 01 Aug 2019

Abstract

Abstract

The convergence of the multi-layered continental lithospheres with variable and complex thermal and rheological properties results in various modes of continental collision with distinct deformation behavior of the lithospheric mantle. Using high-resolution thermo-mechanical numerical models, we systematically investigated the effects of crustal rheological strength and the convergence rate on the continental subduction mode. The model results reveal three basic modes of continental subduction, including slab break-off, steep subduction and continental flat-slab subduction. Whether lithospheric mantle of the overriding plate retreats or not during convergence enables the division of the first two modes into two sub-types, which are dominated by the crustal rheological strength. The mode of slab break-off develops under the conditions of low/moderate rheological strength of the continental crust and low convergence rate. In contrast, continental flat-slab subduction favors the strong crust and the high convergence rate. Otherwise, continental steep subduction occurs. The numerical results provide further implications for Geodynamics conditions and physical processes of different modes of continental collision that occur in nature.
- continental subduction,
- slab break-off,
- steep subduction,
- continental flat-slab subduction,
- numerical modeling

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References(45)

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Differentiation of Continental Subduction Mode: Numerical Modeling

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