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Dynamics of unstable continental subduction: Insights from numerical modeling
Huangfu, PP (Huangfu PengPeng)1,2; Wang, YJ (Wang YueJun)1,3; Fan, WM (Fan WeiMing)3; Li, ZH (Li ZhongHai)2; Zhou, YZ (Zhou YongZhi)1; Wang, YJ
Source PublicationSCIENCE CHINA-EARTH SCIENCES
2017
Volume60Issue:2Pages:218-234
DOI10.1007/s11430-016-5014-6
AbstractNumerical experiments are used in this study to systematically investigate the effects of convergence rate, crustal rheological strength, and lithospheric thermal structure on the dynamics of continental collision. The study focuses on the types, conditions and processes of unstable continental subduction. Modelling results suggest that the development of unstable continental subduction can be promoted by conditions that tend to decrease rheological strength of the lithosphere, such as low crustal rheological strength, "hot" thermal structure of the lithosphere, or low convergence rate. Unstable subduction mode can be further categorized into three types: (1) multi-stage slab breakoff, (2) continuously "flowing" of fluid-like slab into the upper mantle, and (3) large-scale detachment of the thickened orogenic root. These three types of unstable continental subduction are respectively associated with (1) a low convergence rate, (2) "hot" thermal structure of the lithosphere with a high convergence rate, and (3) moderate-high crustal rheological strength with a low convergence rate. It is also revealed that the evolution of crustal melting is dominated by the deformation pattern of continental collision, which is mainly controlled by crustal rheological strength. The modelling results have important implications for understanding of continental subduction mode selection under specific geodynamic conditions.
Subject Area地质学
WOS IDWOS:000394043000002
Language英语
Indexed BySCI
KeywordINDIAN LITHOSPHERE BENEATH COLLISIONAL OROGENS TIBETAN PLATEAU CENTRAL-ASIA ZONES ROCKS EXHUMATION RHEOLOGY INSTABILITIES METAMORPHISM
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary ; Geology
Cooperation Status国内
SubtypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8347
Collection图书馆
Corresponding AuthorWang, YJ
Affiliation1.Sun Yat Sen Univ, Sch Earth Sci & Geol Engn, Guangzhou 510275, Guangdong, Peoples R China.
2.Univ Chinese Acad Sci, Coll Earth Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China.
3.Chinese Acad Sci, Inst Tibetan Plateau Res, CAS Ctr Excellence Tibetan Plateau Earth Sci, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Huangfu, PP ,Wang, YJ ,Fan, WM ,et al. Dynamics of unstable continental subduction: Insights from numerical modeling[J]. SCIENCE CHINA-EARTH SCIENCES,2017,60(2):218-234.
APA Huangfu, PP ,Wang, YJ ,Fan, WM ,Li, ZH ,Zhou, YZ ,&Wang, YJ.(2017).Dynamics of unstable continental subduction: Insights from numerical modeling.SCIENCE CHINA-EARTH SCIENCES,60(2),218-234.
MLA Huangfu, PP ,et al."Dynamics of unstable continental subduction: Insights from numerical modeling".SCIENCE CHINA-EARTH SCIENCES 60.2(2017):218-234.
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