A new model of slab tear of the subducting Philippine Sea Plate associated with Kyushu-Palau Ridge subduction

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	A new model of slab tear of the subducting Philippine Sea Plate associated with Kyushu-Palau Ridge subduction
	Cao, Lingmin 1,2; Wang, Zhi 1; Wu, Shiguo 2; Gao, Xiang 2
刊名	TECTONOPHYSICS
	2014-12-01
卷号	636 页码:158-169
关键词	Seismic tomography Philippine Sea Plate Kyushu-Palau Ridge Slab tear
通讯作者	Cao, LM (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China.
英文摘要	We suggest that the Kyushu-Palau Ridge (KPR) plays a key role in the subduction process of the Philippine Sea Plate (PSP) and the origin of the Abu volcano in the southwestern Japan. The 3-D P-wave velocity structure was imaged to approximately 300 km beneath the Abu volcano using a large number of P-wave arrivals from local earthquakes and teleseismic events. Our results indicate that a high-velocity anomaly beneath the Abu volcano is associated with the subducting PSP; however, the anomaly is not continuous, being interrupted apparently by a low-velocity anomaly zone extending northwestwards from 80 km to great depth. The PSP appears to be tearing and then forms a 'slab window' corresponding to KPR subduction at ca. 2 Ma. The low-velocity anomaly may indicate hot upper mantle material rising through the slab window and causing partial melting both of the lower crust of the overriding plate and the oceanic crust of the subducted KPR. A new model is presented for slab tearing of the PSP associated with the subduction of the buoyant, wide and thick KPR and directional change in the motion of the plate, contributing to better understanding of the Abu volcanism. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	Geochemistry & Geophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000345821700012
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/23789]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Cao, Lingmin,Wang, Zhi,Wu, Shiguo,et al. A new model of slab tear of the subducting Philippine Sea Plate associated with Kyushu-Palau Ridge subduction[J]. TECTONOPHYSICS,2014,636:158-169.
APA	Cao, Lingmin,Wang, Zhi,Wu, Shiguo,&Gao, Xiang.(2014).A new model of slab tear of the subducting Philippine Sea Plate associated with Kyushu-Palau Ridge subduction.TECTONOPHYSICS,636,158-169.
MLA	Cao, Lingmin,et al."A new model of slab tear of the subducting Philippine Sea Plate associated with Kyushu-Palau Ridge subduction".TECTONOPHYSICS 636(2014):158-169.