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DOI	10.1016/j.tecto.2021.228771
	Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone
	Zhao Q.; Fan X.; He Y.; Zheng L.; Sun Y.
发表日期	2021
ISSN	00401951
卷号	804
英文摘要	389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements. © 2021 Elsevier B.V.
关键词	Tan-Lu fault zone Teleseismic tomography Upper mantle velocity
英文关键词	Plates (structural components); Structural geology; Lateral heterogeneity; Low-velocity anomaly; Pacific plates; Seismic station; Tan Lu fault zone; Teleseismic events; Upper-mantle velocities; Velocity gradients; Velocity; dynamic analysis; fault zone; fold belt; Pacific plate; seismic tomography; subduction; teleseismic wave; upper mantle; velocity structure; China; Tan-Lu Fault Zone
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/208120
作者单位	Nanjing Tech University, Nanjing, 211816, China; Earthquake Administration of Jiangsu Province, Nanjing, 210014, China
推荐引用方式 GB/T 7714	Zhao Q.,Fan X.,He Y.,et al. Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone[J],2021,804.
APA	Zhao Q.,Fan X.,He Y.,Zheng L.,&Sun Y..(2021).Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone.Tectonophysics,804.
MLA	Zhao Q.,et al."Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone".Tectonophysics 804(2021).