Research on crustal structure and lithosphere property in the Okinawa Trough area

IOCAS-IR > 海洋地质与环境重点实验室

	Research on crustal structure and lithosphere property in the Okinawa Trough area
	Hao, TY ; Liu, JH ; Guo, F ; Huang, ZX ; Xu, Y ; Dai, MG ; Li, AC ; Fu, YT
	2004-05-01
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	47 期号:3 页码:462-+
文章类型	Article
摘要	A mass of geological, geophysical and geochemical data and information from the Okinawa Trough area are collected for comprehensive research in the study area from East China to Okinawa Trough and then to Ryukyu Island Are region. According to the seismic tomography result (P and S wave) and the processing result of free-air and Bouguer gravity anomaly and magnetic anomaly data in the study area, the comprehensive interpretation is carried out. The Moho depth distribution of the study area is obtained by the inversion calculation based on gravity data using the Harmonious Series method. The crust properties are analyzed. Meantime, some Cenozoic basalt data from Kuandian (NE China), Hannuoba (North China), Minxi (South China), Penghu Islands (Taiwan Strait), Okinawa Trough and Japan Island Arc regions are chosen to make the comparison research on element- isotopes. The result indicates that the lithosphere thickness in the Okinawa Trough area has obviously decreased, where a Low -velocity layer of upper-mantle has reached the Moho interface and the metasometized asthenosphere has formed. The research result on element- isotopes shows that the characteristic of the crust in the Okinawa Trough area is different from that in East China area and the Ryukyu Island Arc area. It is considered that the crust in the Okinawa Trough area belongs to the transition type, which is quite similar to the feature of the oceanic crust.; A mass of geological, geophysical and geochemical data and information from the Okinawa Trough area are collected for comprehensive research in the study area from East China to Okinawa Trough and then to Ryukyu Island Are region. According to the seismic tomography result (P and S wave) and the processing result of free-air and Bouguer gravity anomaly and magnetic anomaly data in the study area, the comprehensive interpretation is carried out. The Moho depth distribution of the study area is obtained by the inversion calculation based on gravity data using the Harmonious Series method. The crust properties are analyzed. Meantime, some Cenozoic basalt data from Kuandian (NE China), Hannuoba (North China), Minxi (South China), Penghu Islands (Taiwan Strait), Okinawa Trough and Japan Island Arc regions are chosen to make the comparison research on element- isotopes. The result indicates that the lithosphere thickness in the Okinawa Trough area has obviously decreased, where a Low -velocity layer of upper-mantle has reached the Moho interface and the metasometized asthenosphere has formed. The research result on element- isotopes shows that the characteristic of the crust in the Okinawa Trough area is different from that in East China area and the Ryukyu Island Arc area. It is considered that the crust in the Okinawa Trough area belongs to the transition type, which is quite similar to the feature of the oceanic crust.
关键词	Okinawa Trough Crustal Strucure Tomography Isotope Comparison
学科领域	Geochemistry & Geophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000221751100015
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/3760
专题	海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.Chinese Seismol Bur, Inst Crustal Dynam, Beijing 100085, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Hao, TY,Liu, JH,Guo, F,et al. Research on crustal structure and lithosphere property in the Okinawa Trough area[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2004,47(3):462-+.
APA	Hao, TY.,Liu, JH.,Guo, F.,Huang, ZX.,Xu, Y.,...&Fu, YT.(2004).Research on crustal structure and lithosphere property in the Okinawa Trough area.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,47(3),462-+.
MLA	Hao, TY,et al."Research on crustal structure and lithosphere property in the Okinawa Trough area".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 47.3(2004):462-+.

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