中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
Intracontinental lithospheric delamination: Constraints from imaging the mantle transition zone beneath the southwestern part of the Sichuan Basin

文献类型：期刊论文

作者Yang, Fan3,4; Li, Juan2,3,4; Chen, Sidan3,4; Chen, Yun1,5; Li, Long3,4; Ai, Yinshuang2,3,4
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2023-09-11
页码13
ISSN号1674-7313
关键词Mantle transition zone Receiver function Southwestern part of the Sichuan Basin Dripping lithospheric delamination Sichuan-Yunnan block
DOI10.1007/s11430-022-1129-9
英文摘要The southwestern part of the Sichuan Basin (SW-SCB) is adjacent to the eastern Himalayan syntaxis. Affected by the Indo-Eurasian collision and subsequent intrusion of the Indian plate into the Eurasian plate during the Cenozoic, this region is ideal for the study of the tectonic evolution of the intracontinental lithosphere and the dynamic processes of deep and shallow structures. In this study, we applied the receiver function technique to the data obtained from a recently deployed high-density broadband seismic array across the Sichuan Basin and Sichuan-Yunnan block (SCB-SYB). We conducted a multi-frequency and multi-model correction analysis to image the structure of the mantle transition zone beneath this region. The results showed the 660-km discontinuity gradually increasing in depth by 10-30 km beneath the western side of the Anninghe-Xiaojiang Fault, suggesting the presence of thermal anomalies caused by the subducted Indian plate from west to east. At the junction of the SCBSYB, the 410-km discontinuity exhibited a slight uplift of 5-10 km, while the 660-km discontinuity showed a significant depression of similar to 30 km over a lateral range of similar to 150 km. Based on previous surface GPS observation and dynamic numerical simulation studies, we suggest that the sharp lateral small-scale topography of this 660-km discontinuity beneath the SW-SCB may have resulted from dripping delamination of the lithosphere within the strain localization area. Furthermore, the aggregation of delaminated lithospheric material at the base of the 660-km discontinuity determines the regional topography of mantle transition zone discontinuities. In this study, we provided seismological evidence for the challenging detection of small-scale intracontinental lithosphere dripping delamination. Moreover, it provides a new view for studying deep and shallow dynamic processes in intracontinental regions with stress concentration resulting from plate/continental subduction and collision.
WOS关键词LOWER CRUSTAL FLOW ; P-WAVE TOMOGRAPHY ; RECEIVER FUNCTION ; TIBETAN PLATEAU ; STRENGTH HETEROGENEITIES ; DISCONTINUITIES BENEATH ; CRATONIC LITHOSPHERE ; SOUTHERN CALIFORNIA ; SEISMIC SIGNATURE ; SE TIBET
资助项目National Key Research and Development Program of China[IG-GCAS-201904] ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; [2017YFC1500302]
WOS研究方向Geology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:001066155200002
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program 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 ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program 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 ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program 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 ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program 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 ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/110873]  
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Li, Juan
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Heilongjiang Mohe Observ Geophys, Inst Geol & Geophys, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
5.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Fan,Li, Juan,Chen, Sidan,et al. Intracontinental lithospheric delamination: Constraints from imaging the mantle transition zone beneath the southwestern part of the Sichuan Basin[J]. SCIENCE CHINA-EARTH SCIENCES,2023:13.
APA Yang, Fan,Li, Juan,Chen, Sidan,Chen, Yun,Li, Long,&Ai, Yinshuang.(2023).Intracontinental lithospheric delamination: Constraints from imaging the mantle transition zone beneath the southwestern part of the Sichuan Basin.SCIENCE CHINA-EARTH SCIENCES,13.
MLA Yang, Fan,et al."Intracontinental lithospheric delamination: Constraints from imaging the mantle transition zone beneath the southwestern part of the Sichuan Basin".SCIENCE CHINA-EARTH SCIENCES (2023):13.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。