On the Geodynamic Mechanism of Episodic Uplift of the Tibetan Plateau during the Cenozoic Era
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This work is supported by the National Special Project on the Tibetan Plateau of the China Geological Survey (1212011121261, 1212010610103) and the National Natural Science Foundation of China (Nos. 41202144, 40902060).


On the Geodynamic Mechanism of Episodic Uplift of the Tibetan Plateau during the Cenozoic Era
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    摘要:

    Multi-stage uplift of the Tibetan Plateau during the Cenozoic implies a complex geodynamic process. In this paper, we review main geodynamic models for the uplift of the plateau, and, in particular, analyze the spatio-temporal framework of the Cenozoic deformation structures, which are closely related to the deep geodynamic mechanism for the plateau uplift. From this perspective, significant?change of the deformation regime over the Tibetan Plateau occurred by the middle-late Miocene, while thrust and thrust-folding system under NS compression was succeded by extension or stress-relaxation. Meanwhile, a series of large-scale strike-slip faults commenced or was kinemtically reversed. Based on a systematic synthesis of the structure deformation, magmatism, geomorphological?process and geophysical exploration, we propose a periodical model of alternating crustal compression and extension for episodic uplift of the Tibetan Plateau.

    Abstract:

    Multi-stage uplift of the Tibetan Plateau during the Cenozoic implies a complex geodynamic process. In this paper, we review main geodynamic models for the uplift of the plateau, and, in particular, analyze the spatio-temporal framework of the Cenozoic deformation structures, which are closely related to the deep geodynamic mechanism for the plateau uplift. From this perspective, significant?change of the deformation regime over the Tibetan Plateau occurred by the middle-late Miocene, while thrust and thrust-folding system under NS compression was succeded by extension or stress-relaxation. Meanwhile, a series of large-scale strike-slip faults commenced or was kinemtically reversed. Based on a systematic synthesis of the structure deformation, magmatism, geomorphological?process and geophysical exploration, we propose a periodical model of alternating crustal compression and extension for episodic uplift of the Tibetan Plateau.

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WANG Guocan, CAO Kai, WANG An, SHEN Tianyi, ZHANG Kexin and WANG Liquan.2014. On the Geodynamic Mechanism of Episodic Uplift of the Tibetan Plateau during the Cenozoic Era[J]. ACTA GEOLOGICA SINICA(English edition),88(2):699~716

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  • 收稿日期:2013-12-12
  • 最后修改日期:2014-02-21
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  • 在线发布日期: 2014-04-21
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