Early Paleozoic ridge subduction in the Chinese Altai: Insight from the abrupt change in zircon Hf isotopic compositions

doi:10.1007/s11430-009-0110-3

	Early Paleozoic ridge subduction in the Chinese Altai: Insight from the abrupt change in zircon Hf isotopic compositions
	Sun Min 1; Long XiaoPing 1,2; Cai KeDa 1; Jiang YingDe 1; Wang BuYun 1; Yuan Chao 2; Zhao GuoChun 1; Xiao WenJiao 3; Wu FuYuan 3
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2009-09-01
卷号	52 期号:9 页码:1345-1358
关键词	Paleozoic ridge subduction Hf isotope granite Altai
ISSN号	1006-9313
DOI	10.1007/s11430-009-0110-3
文献子类	Article
英文摘要	Zircons were separated from granitoids, gneisses, and sedimentary rocks of the Chinese Altai. Those with igneous characteristics yielded U-Pb ages of 280-2800 Ma, recording a long history of magmatic activity in the region. Zircon Hf isotopic compositions show an abrupt change at similar to 420 Ma, indicating that prior to that time the magmas came from both ancient and juvenile sources, whereas younger magmas were derived mainly from juvenile material. This may imply that the lithosphere was significantly modified in composition by a rapid addition of melt from the mantle. We suggest that this dramatic change was due to the onset of ridge subduction, which can account not only for the formation of voluminous granitoids, mafic rocks with complex compositions, and the association of adakite + high-Mg andesite + boninite + Nb-enriched basalt, but also for the coeval high-T, low-P metamorphism.
WOS关键词	XINJIANG AUTONOMOUS REGION ; NW CHINA ; TECTONIC EVOLUTION ; NORTHWEST CHINA ; U-PB ; NORTHERN XINJIANG ; IGNEOUS ROCKS ; OROGENIC BELT ; GEOCHEMISTRY ; DEPOSITS
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000269974200008
资助机构	National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; Hong Kong RGC(HKU704307P ; Hong Kong RGC(HKU704307P ; National Natural Science Foundation of China(40772130 ; National Natural Science Foundation of China(40772130 ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 704004P) ; 704004P) ; 40803009) ; 40803009) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; Hong Kong RGC(HKU704307P ; Hong Kong RGC(HKU704307P ; National Natural Science Foundation of China(40772130 ; National Natural Science Foundation of China(40772130 ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 704004P) ; 704004P) ; 40803009) ; 40803009) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; Hong Kong RGC(HKU704307P ; Hong Kong RGC(HKU704307P ; National Natural Science Foundation of China(40772130 ; National Natural Science Foundation of China(40772130 ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 704004P) ; 704004P) ; 40803009) ; 40803009) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; Hong Kong RGC(HKU704307P ; Hong Kong RGC(HKU704307P ; National Natural Science Foundation of China(40772130 ; National Natural Science Foundation of China(40772130 ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 704004P) ; 704004P) ; 40803009) ; 40803009)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71596]
专题	中国科学院地质与地球物理研究所
通讯作者	Sun Min
作者单位	1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Guangdong, Peoples R China 3.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	Sun Min,Long XiaoPing,Cai KeDa,et al. Early Paleozoic ridge subduction in the Chinese Altai: Insight from the abrupt change in zircon Hf isotopic compositions[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2009,52(9):1345-1358.
APA	Sun Min.,Long XiaoPing.,Cai KeDa.,Jiang YingDe.,Wang BuYun.,...&Wu FuYuan.(2009).Early Paleozoic ridge subduction in the Chinese Altai: Insight from the abrupt change in zircon Hf isotopic compositions.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,52(9),1345-1358.
MLA	Sun Min,et al."Early Paleozoic ridge subduction in the Chinese Altai: Insight from the abrupt change in zircon Hf isotopic compositions".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 52.9(2009):1345-1358.