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学科主题: Geochemistry & Geophysics
题名: The numerical modeling of the formation and evolution of rifted continental margin
作者: Chen, L ; Song, HB ; Xu, HH ; Liu, H
通讯作者: chenlin@mail.iggcas.ac.cn ; hbsong@mail.iggcas.ac.cn
关键词: Rifted continental margin ; Upwelling divergent mantle flow ; Heat flow ; Subsidence ; Stretching factor ; Yielding stress envelope
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
发表日期: 2009
卷: 52, 期:11, 页:2781-2787
收录类别: sci
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
项目归属: 海洋地质
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.
原文出处: 查看原文
WOS记录号: WOS:000272324900013
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4590
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Chen, L; Song, HB; Xu, HH; Liu, H.The numerical modeling of the formation and evolution of rifted continental margin,CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(11):2781-2787
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