Lithosphere architecture and geodynamic model of Middle and Lower Reaches of Yangtze Metallogenic Belt: A review from SinoProbe

	Lithosphere architecture and geodynamic model of Middle and Lower Reaches of Yangtze Metallogenic Belt: A review from SinoProbe
	Lu QingTian 1; Dung ShuWen 2; Shi DaNian 1; Tang JingTian 3; Jiang GuoMing 4; Zhang YongQian 1; Xu Tao 5; SinoProbe-03-CJ Group
刊名	ACTA PETROLOGICA SINICA
	2014-04-01
卷号	30 期号:4 页码:889-906
关键词	Middle and Lower Yangtze Metallogenic Belt Teleseismic tomography Deep reflection seismic Intro-continental subduction Lithosphere delamination Geodynamic model
ISSN号	1000-0569
文献子类	Article
英文摘要	The lithosphere structure and deep processes are keys to understanding the formation of ore-district and metallogenic province. Lithosphere-scale process could create big footprints or signatures which can be observed by geophysics methods. To better understand the deep dynamic of the major metallogenic province, the authors has conducted an integrated deep exploration across Middle and Lower Reaches of Yangtze Metallogenic Belt (YMB) in eastern China, these included broadband seismic, deep reflection seismic, wide-angle reflection seismic and magnetotelluric sounding. The findings based on the data processing and inversion of these integrated geophysical exploration include: (1) Lower velocity body at the top of upper mantle and a SW dipping high velocity body with center depth at 300km, were imaged by teleseismic tomography beneath YMB; (2) S-wave receive function evidence the thinning of the lithosphere beneath the YMB to 50 similar to 70km; and SKS, SKKS shear wave splitting results show NE parallel fast-wave polarization direction which parallel with the regional tectonic lineament; (3) The reflection seismic data reveals strong NW-SE upper crustal contraction deformation, characterized as tight fold, thrust fault and nappe. The "crocodile" reflection structures are found beneath the Ningwu volcanic basin, Changjiang deep fault and Tan-Lu fault, indicating the decoupled deformation process of the upper and lower crust. Overall, the seismic data show evidence for an introcontinental orogen with lower crust and upper mantle subduction and imbrication; (4) Refraction seismic and MT data provide velocity and resistivity distribution across the YMB, and show a general agreement with the tectonic units. Based on the results of the integrated geophysical exploration, combining with the recent geochemistry results, a geodynamic model is proposed for the YMB. The model suggests that Middle and Later Jurassic introcontinental subduction, lithosphere delamination, mantle-derived magmatic underplating and MASH process are responsible for the formation of this world-class metallogenic belt.
WOS关键词	SURROUNDING AREAS CONSTRAINTS ; CRUSTAL STRUCTURE BENEATH ; SOURCE SEISMIC EXPERIMENT ; LOWER CONTINENTAL-CRUST ; CU-AU MINERALIZATION ; LU FAULT ZONE ; EASTERN CHINA ; SOUTH CHINA ; TAN-LU ; SOUTHEASTERN CHINA
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000335541600001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86672]
专题	中国科学院地质与地球物理研究所
通讯作者	Lu QingTian
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 2.Chinese Acad Geol Sci, Beijing 100037, Peoples R China 3.Cent S Univ, Sch Geosci & Infophys, Key Lab Metallogen Predict Nonferrous Met, Minist Educ, Changsha 410083, Hunan, Peoples R China 4.China Univ Geosci, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Lu QingTian,Dung ShuWen,Shi DaNian,et al. Lithosphere architecture and geodynamic model of Middle and Lower Reaches of Yangtze Metallogenic Belt: A review from SinoProbe[J]. ACTA PETROLOGICA SINICA,2014,30(4):889-906.
APA	Lu QingTian.,Dung ShuWen.,Shi DaNian.,Tang JingTian.,Jiang GuoMing.,...&SinoProbe-03-CJ Group.(2014).Lithosphere architecture and geodynamic model of Middle and Lower Reaches of Yangtze Metallogenic Belt: A review from SinoProbe.ACTA PETROLOGICA SINICA,30(4),889-906.
MLA	Lu QingTian,et al."Lithosphere architecture and geodynamic model of Middle and Lower Reaches of Yangtze Metallogenic Belt: A review from SinoProbe".ACTA PETROLOGICA SINICA 30.4(2014):889-906.