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  2. 地质与地球物理研究所
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  4. 中国科学院地球与行星物理重点实验室
Seismic, thermal and compositional structures of the stagnant slab in the mantle transition zone beneath southeastern China

文献类型：期刊论文

作者Wang, Yi2,3; He, Yumei1,4,5; Lu, Gang1,6; Wen, Lianxing7
刊名TECTONOPHYSICS
出版日期2020-01-20
卷号775页码:11
关键词Mantle transition zone Stagnant slab Triplication waveform modeling Mineralogical modeling Thermal structure
ISSN号0040-1951
DOI10.1016/j.tecto.2019.228208
英文摘要The structure of Earth's mantle transition zone (MTZ) contains important information about how oceanic plates are recycled into the mantle. However, morphologies of stagnant slab in the MTZ inferred from seismic studies remain controversial. Here, we conduct combined geodynamic, mineral physical and seismologic modeling to infer fine features of the stagnant slab in the MTZ beneath southeastern China. This method applies mineral physics modeling in combination with geodynamically consistent thermal anomalies to predict seismic velocity structures in the MTZ that are used in triplication waveform modeling. The synthetic waveforms are systematically compared with observed data using a grid search optimization. Our best-fit model reveals a stagnant slab lying at the bottom of the MTZ with a peak temperature reduction of 350 +/- 80 K and a thickness of 85 +/- 20 km, indicating that it underwent little deformation. By joint modeling of the mineral physics and thermal history of the slab, our approach improves estimates of both the thickness and temperature of the stagnant slab and provides a better understanding of the paleo subduction system beneath southeastern China.
WOS关键词PHASE-TRANSFORMATIONS ; TECTONIC EVOLUTION ; SUBDUCTION ZONE ; SH-VELOCITY ; DISCONTINUITY ; LITHOSPHERE ; SHARPNESS ; DYNAMICS ; MODELS ; ASIA
资助项目National Natural Science Foundation of China[XDB18010302] ; National Natural Science Foundation of China[41490612] ; National Natural Science Foundation of China[41590621] ; National Natural Science Foundation of China[41374054] ; National Natural Science Foundation of China[41774112]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000515211300001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/95608]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者He, Yumei
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 10029, Peoples R China
2.Univ Sci & Technol China, Sch Earth & Space Sci, Lab Seismol & Phys Earths Interior, Hefei 230026, Anhui, Peoples R China
3.Natl Geophys Observ Mengcheng, Mengcheng 233500, Anhui, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
5.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
7.SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA
推荐引用方式
GB/T 7714		 Wang, Yi,He, Yumei,Lu, Gang,et al. Seismic, thermal and compositional structures of the stagnant slab in the mantle transition zone beneath southeastern China[J]. TECTONOPHYSICS,2020,775:11.
APA Wang, Yi,He, Yumei,Lu, Gang,&Wen, Lianxing.(2020).Seismic, thermal and compositional structures of the stagnant slab in the mantle transition zone beneath southeastern China.TECTONOPHYSICS,775,11.
MLA Wang, Yi,et al."Seismic, thermal and compositional structures of the stagnant slab in the mantle transition zone beneath southeastern China".TECTONOPHYSICS 775(2020):11.

入库方式： OAI收割

来源：地质与地球物理研究所

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