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Forced Cenozoic continental subduction of Tarim craton-like lithosphere below the Tianshan revealed by ambient noise tomography

文献类型：期刊论文

作者Sun, Weijia1; Ao, Songjian2; Tang, Qingya1; Malusa, Marco G.3; Zhao, Liang2; Xiao, Wenjiao2,4
刊名GEOLOGY
出版日期2022-12-01
卷号50期号:12页码:1393-1397
ISSN号0091-7613
DOI10.1130/G50510.1
英文摘要The possibility that craton-like lithosphere may undergo subduction during convergence of major tectonic plates is still poorly investigated. We addressed this issue using ambient noise tomography of the Tarim Basin and the Tianshan (Central Asia). Our S-wave velocity model reveals a flat-lying high-velocity anomaly beneath the Tarim Basin in the 45-60 km depth range, consistent with intrusion of mafic rocks at the base of the lower crust above a depleted lithospheric mantle, as expected after interaction of the lithosphere with a mantle plume. This high-velocity anomaly can be followed northward, steeply dipping (similar to 45 degrees) beneath the Tianshan, which indicates that the Tarim craton-like lithosphere was subducted to mantle depths. It is connected with a fast P-wavespeed anomaly in the upper mantle, interpreted as a relict of the South Tianshan Ocean. A long period of tectonic quiescence, after the closure of the South Tianshan Ocean and before the Cenozoic tectonic rejuvenation of the Tianshan, suggests a minor role of oceanic slab pull in controlling continental subduction. The major player is instead the northward push of India within the framework of Cenozoic India-Asia convergence. We conclude that forced subduction can be experienced not only by thinned continental crust but also by a strong craton-like lithosphere.
WOS关键词SOUTH TIANSHAN ; TIEN-SHAN ; ASIA ; TECTONICS ; INSIGHTS ; NORTH ; PHASE ; OCEAN ; BELT
资助项目National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[42022026] ; National Natural Science Foundation of China[41822204] ; National Natural Science Foundation of China[41774060]
WOS研究方向Geology
语种英语
WOS记录号WOS:000911443000013
出版者GEOLOGICAL SOC AMER, INC
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/132A11/106841]  
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Sun, Weijia; Ao, Songjian; Malusa, Marco G.
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Univ Milano Bicocca, Dept Earth & Environm Sci, I-20126 Milan, Italy
4.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Weijia,Ao, Songjian,Tang, Qingya,et al. Forced Cenozoic continental subduction of Tarim craton-like lithosphere below the Tianshan revealed by ambient noise tomography[J]. GEOLOGY,2022,50(12):1393-1397.
APA Sun, Weijia,Ao, Songjian,Tang, Qingya,Malusa, Marco G.,Zhao, Liang,&Xiao, Wenjiao.(2022).Forced Cenozoic continental subduction of Tarim craton-like lithosphere below the Tianshan revealed by ambient noise tomography.GEOLOGY,50(12),1393-1397.
MLA Sun, Weijia,et al."Forced Cenozoic continental subduction of Tarim craton-like lithosphere below the Tianshan revealed by ambient noise tomography".GEOLOGY 50.12(2022):1393-1397.

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来源：地质与地球物理研究所

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