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Ambient Noise Tomography of the Shandong Province and its Implication for Cenozoic Intraplate Volcanism in Eastern China
Li, Cuilin1,2,3; Chen, Chuanxu4; Dong, Dongdong1,2,3; Kuponiyi, Ayodeji Paul5,6; Dosso, Stan E.6; Su, Daolei7
2018-09-01
发表期刊GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
ISSN1525-2027
卷号19期号:9页码:3286-3301
摘要New images of shear wave velocity (V-S) structure of the crust and uppermost mantle in the Shandong province of China are presented based on inversion of ambient seismic noise data from 47 broadband stations. Interstation Rayleigh wave phase-velocity dispersion curves for periods of 1-40 s are obtained from noise cross correlations between stations. Two-dimensional phase-velocity maps at periods of 5-30 s are obtained by tomographic inversion of these dispersion curves, which are then inverted for 3-D Vs heterogeneity to similar to 80-km depth. Our results show clear indications of Moho uplift and crustal thinning beneath the northern segment of the Yishu fault zone and the Jiaobei uplift, thus providing seismological evidence for the steep geometry and deep penetration of the fault system. Instead of large-scale, low-velocity anomalies beneath eastern China as imaged by previous regional tomography, our high-resolution Vs results reveal fine-scale focused low-velocity anomalies beneath the isolated Cenozoic basalts. There are strong spatial correlations between the narrow low Vs zones in the uppermost mantle and the thinned crust, as well as the locations of the isolated Cenozoic volcanism in the study area. Our results suggest that the asthenosphere upwelling possibly originating from the stagnant Pacific slab is focused into localized features at 50- to 80-km depth that supply the isolated Cenozoic volcanoes of the eastern China continental margin.
关键词ambient noise tomography phase velocity crust structure Yishu fault zone intraplate volcanism
DOI10.1029/2018GC007515
资助者Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology ; National Program on Global Change and Air-Sea Interaction ; Research Program of Earthquake Administration of Shandong Province ; National Natural Science Foundation of China
语种英语
资助项目Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology[MGQNLM-KF201706] ; National Program on Global Change and Air-Sea Interaction[GASI-GEOGE-02] ; Research Program of Earthquake Administration of Shandong Province[JJ1601] ; National Natural Science Foundation of China[41606055]
关键词[WOS]SEISMIC-SOUNDING PROFILE ; MANTLE TRANSITION ZONE ; NORTH CHINA ; CRUSTAL STRUCTURE ; STAGNANT SLAB ; GEODYNAMIC IMPLICATIONS ; JIAODONG PENINSULA ; VELOCITY STRUCTURE ; ALKALINE BASALTS ; OCEANIC-CRUST
WOS研究方向Geochemistry & Geophysics
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000448475100025
出版者AMER GEOPHYSICAL UNION
引用统计
文献类型期刊论文
条目标识符http://ir.idsse.ac.cn/handle/183446/6305
通讯作者Li, Cuilin; Chen, Chuanxu
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
4.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China
5.Geol Survey Canada, Pacific Geosci Ctr, Sidney, BC, Canada
6.Univ Victoria, Sch Earth & Ocean Sci, Victoria, BC, Canada
7.Earthquake Adm Jinan City, Jinan, Shandong, Peoples R China
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GB/T 7714
Li, Cuilin,Chen, Chuanxu,Dong, Dongdong,et al. Ambient Noise Tomography of the Shandong Province and its Implication for Cenozoic Intraplate Volcanism in Eastern China[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2018,19(9):3286-3301.
APA Li, Cuilin,Chen, Chuanxu,Dong, Dongdong,Kuponiyi, Ayodeji Paul,Dosso, Stan E.,&Su, Daolei.(2018).Ambient Noise Tomography of the Shandong Province and its Implication for Cenozoic Intraplate Volcanism in Eastern China.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,19(9),3286-3301.
MLA Li, Cuilin,et al."Ambient Noise Tomography of the Shandong Province and its Implication for Cenozoic Intraplate Volcanism in Eastern China".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 19.9(2018):3286-3301.
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