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The numerical modeling of the formation and evolution of rifted continental margin
Chen, L; Song, HB; Xu, HH; Liu, H; chenlin@mail.iggcas.ac.cn; hbsong@mail.iggcas.ac.cn
2009
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
卷号52期号:11页码:2781-2787
摘要On the basis of the isoviscous corner flow model, we established upwelling divergent mantle flow field. When this flow field acts on the base of continental lithosphere, the deformation and thinning of continental lithosphere leading to breakup and the initiation of sea-floor spreading can be described. The numerical modeling results indicate that lithosphere behaves as depth-dependent stretching manifested as stretching factors from different depth are different, and the surface heat significantly increases in response to an upwelling divergent mantle flow. The isostatic adjustment due to the mantle flow-induced thermal disturbance leads to surface subsidence; meanwhile, the thermal disturbance reduces the rheological strength of lithosphere, especially at deformation center. The critical depth of brittle deformation is reduced and the range of ductile deformation becomes larger significantly. This deformation finally evolves into continental breakup, mantle exhumation, and the formation of sea-floor spreading and rifted continental margin under the continuing impact of upwelling divergent mantle flow.
部门归属[Chen Lin; Song Hai-Bin; Liu Hong] Chinese Acad Sci, Key Lab Petr Resources Res, Inst Geol & Geophys, Beijing 100029, Peoples R China; [Chen Lin] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China; [Xu He-Hua] Chinese Acad Sci, Key Lab Marginal Sea Geol, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
关键词Rifted Continental Margin Upwelling Divergent Mantle Flow Heat Flow Subsidence Stretching Factor Yielding Stress Envelope
学科领域Geochemistry & Geophysics
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000272324900013
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4590
专题中科院边缘海地质重点实验室
通讯作者chenlin@mail.iggcas.ac.cn; hbsong@mail.iggcas.ac.cn
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GB/T 7714
Chen, L,Song, HB,Xu, HH,et al. The numerical modeling of the formation and evolution of rifted continental margin[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(11):2781-2787.
APA Chen, L,Song, HB,Xu, HH,Liu, H,chenlin@mail.iggcas.ac.cn,&hbsong@mail.iggcas.ac.cn.(2009).The numerical modeling of the formation and evolution of rifted continental margin.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(11),2781-2787.
MLA Chen, L,et al."The numerical modeling of the formation and evolution of rifted continental margin".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.11(2009):2781-2787.
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