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  4. 岩石圈演化国家重点实验室
Lateral Structural Variation of the Lithosphere-Asthenosphere System in the Northeastern to Eastern Iranian Plateau and Its Tectonic Implications

文献类型：期刊论文

作者Wu, Zimu7,8; Chen, Ling1,7,8; Talebian, Morteza4; Wang, Xu7,8; Jiang, Mingming1,5; Ai, Yinshuang1,5,8; Lan, Haiqiang7; Gao, Yifan7,8; Khatib, Mohammad Mahdi6; Hou, Guangbing5
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2021
卷号126期号:1页码:23
ISSN号2169-9313
关键词asthenospheric melting Iranain plateau lithospheric deformation mantle dynamics structure of lithosphere‐ asthenosphere system S‐ wave receiver function
DOI10.1029/2020JB020256
英文摘要The Iranian plateau is a natural laboratory for deciphering the lithospheric deformation and deep dynamics in response to the Neo-Tethyan subduction and subsequent Arabia-Eurasia continental collision. Here we used S-wave receiver function data from a dense seismic array to construct the structural image of the lithosphere-asthenosphere system across the northeastern to eastern Iranian plateau. The lithosphere-asthenosphere boundary (LAB) is consistently imaged, being relatively flat at 80-90 km depth in eastern Iran, but deepening northward to similar to 120 km depth beneath the Kopeh Dagh-Turan platform boundary with an overall "root-like" shape in northeastern Iran. A shallower (<45 km) and a deeper Moho (similar to 50-55 km) are also observed beneath eastern and northeastern Iran, respectively, suggesting similar crustal deformation to mantle lithosphere but different patterns laterally. Moreover, a strong positive velocity discontinuity (PVD) is detected at similar to 170 km depth beneath eastern Iran, possibly representing the base of an asthenospheric low-velocity layer (LVL). Waveform modeling reveals large velocity contrasts of similar to 4%-6% over a depth range of less than 30 and 20 km, respectively, across the LAB and the asthenospheric PVD. Combining our new results with geological and petrological constraints, we deduced that the asthenospheric LVL contains a small amount of melt, with sharp boundaries separating from the nearly melt-free lithosphere above (LAB) and deeper mantle below (PVD). The observed structural variations of the lithosphere-asthenosphere system across the study region may result from the complex lithospheric deformation in response to the Arabia-Eurasia collision and effects of multiple tectono-thermal events associated with the earlier Neo-Tethyan subduction.
资助项目Strategic Priority Research Program[XDA20070302] ; International Partnership Program of Chinese Academy of Sciences[GJHZ1776] ; National Natural Science Foundation of China[91855207] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41822204] ; China-Pakistan Joint Research Center on Earth Sciences ; [SKL-Z201704-11712180]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000617378900002
资助机构Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; Strategic Priority Research Program ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences ; China-Pakistan Joint Research Center on Earth Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/100086]  
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Chen, Ling
作者单位1.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
2.Geol Survey Iran, Mashhad, Razavi Khorasan, Iran
3.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
4.Geol Survey Iran, Res Inst Earth Sci, Tehran, Iran
5.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China
6.Univ Birjand, Dept Geol, Birjand, Iran
7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
8.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
9.Acad Sinica, Inst Earth Sci, Taipei, Taiwan
10.Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan
推荐引用方式
GB/T 7714		 Wu, Zimu,Chen, Ling,Talebian, Morteza,et al. Lateral Structural Variation of the Lithosphere-Asthenosphere System in the Northeastern to Eastern Iranian Plateau and Its Tectonic Implications[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2021,126(1):23.
APA Wu, Zimu.,Chen, Ling.,Talebian, Morteza.,Wang, Xu.,Jiang, Mingming.,...&Zhu, Rixiang.(2021).Lateral Structural Variation of the Lithosphere-Asthenosphere System in the Northeastern to Eastern Iranian Plateau and Its Tectonic Implications.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,126(1),23.
MLA Wu, Zimu,et al."Lateral Structural Variation of the Lithosphere-Asthenosphere System in the Northeastern to Eastern Iranian Plateau and Its Tectonic Implications".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 126.1(2021):23.

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来源：地质与地球物理研究所

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