Nd, Sr, Pb isotopic characteristics of the Mesozoic intrusive rocks in the Taihang Da Hinggan Mountains Tectonomagmatic Belt and their source region

	Nd, Sr, Pb isotopic characteristics of the Mesozoic intrusive rocks in the Taihang Da Hinggan Mountains Tectonomagmatic Belt and their source region
	Cai, JH ; Yan, GH ; Xiao, CD ; Wang, GY ; Mu, BL ; Zhang, RH
刊名	ACTA PETROLOGICA SINICA
	2004-09-01
卷号	20 期号:5 页码:1225-1242
关键词	Sr, Nd, Pb isotopes source region intrusive rocks Mesozoic Taihang - Da Hinggan Tectonomagmatic Belt
ISSN号	1000-0569
文献子类	Article
英文摘要	The Taihang - Da Hinggan Mountains Tectonomagmatic Belt is the Mesozoic magmaeric activities concentrating area in eastern China, which passes through the two tectonic units of the North China Craton and the Inn Mongolian Orogenic Zone. In this paper a systematic geochemical study on Nd, Sr and Ph isotopic characteristics from more than 40 typical complexes along the tectonomagmatic belt is presented to indicate that the Mesozoic intrusives in different sections of this belt ( mainly the north, south Taihang Mountains and the middle-south Da Hinggan Mountains), even those of different stages ( mainly three stages) in the same section have entirely different Nd, Sr and Pb isotopic characteristics, which reveals that their source regions are different. The source rocks in the southern section of Taihang Mountains are related to materials from the enriched mantle reservoir. In the northern section the early stage basic-intermediate rocks are mainly formed by the partial melting of materials from the enriched mantle, the main stage intermediate-acid ones have a close connection to materials from the lower crust, while the late stage alkali-rich ones are even derived from those from the lower-middle crust. And the intermediate-acid magma in the middle-south Da Hinggan Mountains is mainly originated from depleted mantle materials. These also reveal that the lithospheric mantle below the North China Craton is enriched and that below the Inner Mongolia Orogenic Zone is depleted. In addition, implicated by Nd depleted mantle model ages (T-DM), 2543 similar to 1485Ma probably represents the time for mantle enrichment beneath the North China Craton, and 983 similar to 540Ma ( Proterozoic to early Palaeozoic period) suggests one of the main stages for the crust growth in Da Hinggan Mountains area.
WOS关键词	NORTH CHINA ; GEOCHEMICAL CHARACTERISTICS ; LITHOSPHERIC MANTLE ; IGNEOUS ROCKS ; SM-ND ; COMPLEX ; GRANITOIDS ; PETROGENESIS ; SYSTEMATICS ; GENESIS
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000224589100018
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64393]
专题	中国科学院地质与地球物理研究所
通讯作者	Cai, JH
作者单位	1.Peking Univ, Fac Earth & Space Sci, Beijing 100871, Peoples R China 2.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 3.N China Bur Exploitat Geol, Tianjin 300181, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Cai, JH,Yan, GH,Xiao, CD,et al. Nd, Sr, Pb isotopic characteristics of the Mesozoic intrusive rocks in the Taihang Da Hinggan Mountains Tectonomagmatic Belt and their source region[J]. ACTA PETROLOGICA SINICA,2004,20(5):1225-1242.
APA	Cai, JH,Yan, GH,Xiao, CD,Wang, GY,Mu, BL,&Zhang, RH.(2004).Nd, Sr, Pb isotopic characteristics of the Mesozoic intrusive rocks in the Taihang Da Hinggan Mountains Tectonomagmatic Belt and their source region.ACTA PETROLOGICA SINICA,20(5),1225-1242.
MLA	Cai, JH,et al."Nd, Sr, Pb isotopic characteristics of the Mesozoic intrusive rocks in the Taihang Da Hinggan Mountains Tectonomagmatic Belt and their source region".ACTA PETROLOGICA SINICA 20.5(2004):1225-1242.