Crustal structure beneath the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from active source seismic experiment along the Lixin to Yixing profile in East China

	Crustal structure beneath the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from active source seismic experiment along the Lixin to Yixing profile in East China
	Xu Tao 1; Zhang Zhongjie 1; Tian XiaoBo 1; Liu BaoFeng 2; Bai ZhiMing 1; Lu QingTian 3; Teng JiWen 1
刊名	ACTA PETROLOGICA SINICA
	2014-04-01
卷号	30 期号:4 页码:918-930
关键词	Middle-Lower Yangtze metallogenic belt Crustal velocity structure Wide-angle seismic data Lixin-Yixing
ISSN号	1000-0569
文献子类	Article
英文摘要	To understand the formation and the tectonic process of the Mesozoic Middle-Lower Yangtze Metallogenic Belt (YMB), the SinoProbe program conducted a 450km-long active source seismic experiment along a profile from Lixing to Yixing. We herein resent the modeling results and the interpretations of the crustal velocity structure obtained with this wide-angle seismic dataset. Our results show: (1) The thickness of the sedimentary layer is 3 similar to 5km in the Yangtze block, and 4 similar to 7km in the Hefei basin. (2) The average Moho depth is 30 similar to 32km along the profile. The Moho depth is up to 35km beneath the Tan-lu Fault, and shallows up to 30 similar to 31km beneath the Ningwu ore district. (3) The average velocity of the lower crust is 6.5 similar to 6.6km/s along the profile, decreases to 6.4 similar to 6.5km/s beneath the Ningwu ore district. The average velocity of uppermost mantle is 8.0 similar to 8.2km/s along the profile, decreases to 7.9 similar to 8.1 km/s beneath the Ningwu ore district. (4) An over 20-km long low velocity belt is seen from the surface to the Moho nearby. The Moho uplift, the low velocity anomalies in the lower crust and the uppermost mantle, all these features can be reasonably regarded as the relics of past asthenosphere upwelling and lithosphere thinning, therefore support the Mesozoic magmatism and mineralization to be consequence of mantle upwelling process.
WOS关键词	LOWER REACHES ; SOUTH CHINA ; VELOCITY STRUCTURE ; INTRUSIVE ROCKS ; DEEP GEODYNAMICS ; VOLCANIC-BASIN ; NINGZHEN AREA ; IGNEOUS ROCKS ; ORE DISTRICT ; UPPER MANTLE
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000335541600003
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86114]
专题	中国科学院地质与地球物理研究所
通讯作者	Xu Tao
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.China Earthquake Adm, Geophys Explorat Ctr, Zhengzhou 450002, Peoples R China 3.Chinese Acad Geol Sci, Inst Mineral Resources, MLR, Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Xu Tao,Zhang Zhongjie,Tian XiaoBo,et al. Crustal structure beneath the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from active source seismic experiment along the Lixin to Yixing profile in East China[J]. ACTA PETROLOGICA SINICA,2014,30(4):918-930.
APA	Xu Tao.,Zhang Zhongjie.,Tian XiaoBo.,Liu BaoFeng.,Bai ZhiMing.,...&Teng JiWen.(2014).Crustal structure beneath the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from active source seismic experiment along the Lixin to Yixing profile in East China.ACTA PETROLOGICA SINICA,30(4),918-930.
MLA	Xu Tao,et al."Crustal structure beneath the Middle-Lower Yangtze metallogenic belt and its surrounding areas: Constraints from active source seismic experiment along the Lixin to Yixing profile in East China".ACTA PETROLOGICA SINICA 30.4(2014):918-930.