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  4. 岩石圈演化国家重点实验室
XKS splitting-based upper-mantle deformation in the Jiaodong Peninsula records the boundary between the North China Craton and South China Block

文献类型：期刊论文

作者Wu, Chenglong3; Xu, Tao1,3; Ai, Yinshuang1,4; Dong, Weiyu2,3; Li, Long2,4
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2020-08-01
卷号222期号:2页码:956-964
关键词Seismic anisotropy Fractures faults high strain deformation zones Rheology: mantle
ISSN号0956-540X
DOI10.1093/gji/ggaa224
英文摘要The Jiaodong Peninsula consists of the Jiaobei massif and the Northern Sulu UHP massif. These are separated by the Wulian suture zone (WSZ), a key region for understanding the collision between the North China Craton (NCC) and South China Block (SCB). To interpret this collisional zone, a broad-band seismic profile of 20 stations was installed across the WSZ. Shear wave splitting analysis of teleseismic data revealed a contrast in the splitting patterns beneath different structural zones of the Jiaodong Peninsula. The anisotropic structures of the Jiaobei massif and Northern Sulu UHP massif can be explained by a single anisotropic layer model with WNW-ESE or E-W oriented fast directions. In the WSZ, splitting parameters exhibit pronounced variation in backazimuths indicating a two-layer anisotropy pattern. The lower layer exhibits a WNW-ESE fast direction consistent with that observed in the other two regions. Because the fast direction is generally parallel to the present-day direction of Pacific plate subduction, the anisotropy most likely represents asthenospheric return flow in the big mantle wedge caused by Pacific plate subduction. The upper layer exhibits an NE fast direction, that is, parallel to faulting associated with the WSZ. The lithosphere may preserve fossilized anisotropy induced by the Late Triassic collision of the NCC and SCB even after subsequent destruction and thinning from the Late Mesozoic to Cenozoic. We infer that the WSZ represents a lithospheric-scale structural boundary between the NCC and SCB.
WOS关键词SEISMIC ANISOTROPY ; P-WAVE ; METAMORPHIC ROCKS ; OROGENIC BELT ; EAST CHINA ; TAN-LU ; SHEAR ; BENEATH ; EXHUMATION ; EVOLUTION
资助项目Chinese National Key Research and Development Program[2016YFC0600101] ; National Natural Science Foundation of China[41804058]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000565896700016
出版者OXFORD UNIV PRESS
资助机构Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; 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/132A11/97798]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
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
通讯作者Xu, Tao
作者单位1.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Chenglong,Xu, Tao,Ai, Yinshuang,et al. XKS splitting-based upper-mantle deformation in the Jiaodong Peninsula records the boundary between the North China Craton and South China Block[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2020,222(2):956-964.
APA Wu, Chenglong,Xu, Tao,Ai, Yinshuang,Dong, Weiyu,&Li, Long.(2020).XKS splitting-based upper-mantle deformation in the Jiaodong Peninsula records the boundary between the North China Craton and South China Block.GEOPHYSICAL JOURNAL INTERNATIONAL,222(2),956-964.
MLA Wu, Chenglong,et al."XKS splitting-based upper-mantle deformation in the Jiaodong Peninsula records the boundary between the North China Craton and South China Block".GEOPHYSICAL JOURNAL INTERNATIONAL 222.2(2020):956-964.

入库方式： OAI收割

来源：地质与地球物理研究所

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