| Title | Two Phases of Crustal Shortening in Northeastern Tibet as a Result of a Stronger Qaidam Lithosphere During the Cenozoic India-Asia Collision |
| Author | |
| Corresponding Author | Xie, Renxian |
| Publication Years | 2023-01
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| DOI | |
| Source Title | |
| ISSN | 0278-7407
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| EISSN | 1944-9194
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| Volume | 42 |
| Abstract | Although two phases of Cenozoic crustal deformation in the Qilian Shan thrust belt of northeastern Tibet has been documented, their dynamic causes remain unclear. To address this issue, we investigate whether the mechanical strength of the Qaidam Basin, which is located between the Eastern Kunlun Range and the Qilian Shan, was a controlling factor for the observed deformation history by performing 2-D thermal–mechanical simulations. Our models consider the division of the Tibetan terranes (i.e., Qilian arc, Kunlun-Qaidam, Songpan-Ganzi, Qiangtang, and Lhasa, from north to south) bounded by suture zones. Simulation results show that weak suture zones in central Tibet can lead to peeling off and sinking of the mantle lithosphere beneath the Qiangtang and Songpan–Ganzi terranes. After lithospheric delamination, varying north-south width, thickness and strength of the Qaidam crust creates three end-member model results: (a) the mantle lithosphere of the Lhasa terrane delaminates while the mantle lithosphere beneath Eastern Kunlun-Qaidam terrane and the Qilian Shan thrust belt (KQQ) remains undeformed, (b) the Lhasa mantle lithosphere moves northward while the KQQ mantle lithosphere subducts southward, and (c) the Lhasa mantle lithosphere moves northward while lithospheric thickening occurs north of the Qaidam Basin. Our simulations show that pre-existing weaknesses in northeastern Tibet can be activated and deformed shortly after the onset of collision, and a second wave of deformation sweeps across northeastern Tibet after lithospheric delamination in northern Tibet. © 2023. American Geophysical Union. All Rights Reserved. |
| Indexed By | |
| Language | English
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| SUSTech Authorship | First
; Corresponding
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| Funding Project | The authors sincerely thank Prof. Taras Gerya for providing the I2VIS package used in this study. The authors also thank Prof. Yingjie Yang and Xiaofeng Liang for kindly providing the Vs model of the Tibetan lithosphere, Dr. Zhiyong Yan for drawing the cartoons shown in Figure 8a , and Dr. Lipeng He for suggestions for the improvement of our figures. The authors acknowledge that all the figures used in this work were prepared with the Generic Mapping Tools (GMT, http://www.soest.hawaii.edu/gmt/ ). This study was supported by the National Key R&D Program of China (2022YFF0800800) and the National Natural Science Foundation of China (Grants 41974110, 41731072, 41890814). The simulations were executed on the TianHe‐1A system at the National Supercomputer Center in Tianjin, the Beijing Super Cloud Computing Center, and Supercomputing Laboratory at IGGCAS. The authors are very grateful to the constructive comments provided by two anonymous reviewers and Prof. Chris Beaumont, which significantly improved the presentation of our work.The authors sincerely thank Prof. Taras Gerya for providing the I2VIS package used in this study. The authors also thank Prof. Yingjie Yang and Xiaofeng Liang for kindly providing the Vs model of the Tibetan lithosphere, Dr. Zhiyong Yan for drawing the cartoons shown in Figure 8a, and Dr. Lipeng He for suggestions for the improvement of our figures. The authors acknowledge that all the figures used in this work were prepared with the Generic Mapping Tools (GMT, http://www.soest.hawaii.edu/gmt/). This study was supported by the National Key R&D Program of China (2022YFF0800800) and the National Natural Science Foundation of China (Grants 41974110, 41731072, 41890814). The simulations were executed on the TianHe-1A system at the National Supercomputer Center in Tianjin, the Beijing Super Cloud Computing Center, and Supercomputing Laboratory at IGGCAS. The authors are very grateful to the constructive comments provided by two anonymous reviewers and Prof. Chris Beaumont, which significantly improved the presentation of our work.
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| Publisher | |
| EI Accession Number | 20230513474376
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| ESI Classification Code | Geology:481.1
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| ESI Research Field | GEOSCIENCES
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| Data Source | EV Compendex
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| Citation statistics |
Cited Times [WOS]:0
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| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/519722 |
| Department | Department of Ocean Science and Engineering |
| Affiliation | 1.Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China 2.Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Shenzhen, China 3.State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China 4.Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, Los Angeles; CA, United States 5.School of Geophysics and Geomatics, China University of Geosciences, Wuhan, China 6.State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China |
| First Author Affilication | Department of Ocean Science and Engineering |
| Corresponding Author Affilication | Department of Ocean Science and Engineering |
| First Author's First Affilication | Department of Ocean Science and Engineering |
| Recommended Citation GB/T 7714 |
Xie, Renxian,Chen, Lin,Yin, An,et al. Two Phases of Crustal Shortening in Northeastern Tibet as a Result of a Stronger Qaidam Lithosphere During the Cenozoic India-Asia Collision[J]. TECTONICS,2023,42.
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| APA |
Xie, Renxian.,Chen, Lin.,Yin, An.,Xiong, Xiong.,Chen, Yongshun John.,...&Wang, Kai.(2023).Two Phases of Crustal Shortening in Northeastern Tibet as a Result of a Stronger Qaidam Lithosphere During the Cenozoic India–Asia Collision.TECTONICS,42.
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| MLA |
Xie, Renxian,et al."Two Phases of Crustal Shortening in Northeastern Tibet as a Result of a Stronger Qaidam Lithosphere During the Cenozoic India–Asia Collision".TECTONICS 42(2023).
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