Archean crustal evolution of the northern Tarim craton, NW China: Zircon U-Pb and Hf isotopic constraints

doi:10.1016/j.precamres.2010.05.001

	Archean crustal evolution of the northern Tarim craton, NW China: Zircon U-Pb and Hf isotopic constraints
	Long, Xiaoping 1; Yuan, Chao 1; Sun, Min 2; Zhao, Guochun 2; Xiao, Wenjiao 3; Wang, Yujing 1; Yang, Yueheng 3; Hu, Aiqin 1
刊名	PRECAMBRIAN RESEARCH
	2010-07-01
卷号	180 期号:3-4 页码:272-284
关键词	Zircon dating Hf isotope Archean Crustal evolution Tarim craton
ISSN号	0301-9268
DOI	10.1016/j.precamres.2010.05.001
文献子类	Article
英文摘要	Tarim craton is one of the major cratons in Central Asia. Basement rocks of the craton, such as TTG gneisses, are dominantly exposed in the northern (Kuluketage area) and the Eastern (Altyn Tagh Mountain). Recent years, only a few reliable Archean ages have been obtained for the basement rocks in the Altyn Tagh Mountain. Geochronological and geochemical studies have been conducted on the orthogneisses exposed in the Kuluketage area in order to unravel complex history of the Tarim craton. Zircon U-Pb dating of the rocks yielded three weighted mean (207)Pb/(206)Pb ages of 2516 +/- 6, 2575 +/- 13 and 2460 +/- 3 Ma, indicating that their protoliths were formed in the late Neoarchean to early Paleoproterozoic. The late Neoarchean orthogneisses exhibit low Sr/Y ratios (4-19) and Mg(#) values (35-44), with depleted Sr contents, negative Nb, Ta and Ti anomalies and strongly fractionated REE patterns ((La/Yb)(N) = 13-62), displaying typical geochemical features of arc igneous rocks. In contrast, the early Paleoproterozoic orthogneisses are characterized by high-SiO(2) contents, Sr/Y ratios (37-67) and Mg(#) values (46-67), with variably fractionated REE patterns ((La/Yb)(N) = 9-89), slight Sr enrichment and positive Eu anomalies, resembling high-SiO(2) adakites derived from subducted basaltic slab-melts. The late Neoarchean TTGs have low epsilon(Hf)(t) values (-5 to +1) and initial Hf compositions (0.280987-0.281160) with Mesoarchean two-stage model ages (T(DM2) = 2.9-3.3 Ga), suggesting that the crustal materials of the basement rocks in this area were initially extracted from a depleted mantle in the late Paleo- to Mesoarchean and were reworked in the late Neoarchean. The history of crustal growth is different from that of the North China and Yangtze cratons and thus implies relatively younger cratonization than the North China and Yangtze cratons. Zircons in the early Paleoproterozoic orthogneisses have high epsilon(Hf)(t) values (+4 to +10) and young Neoarchean two-stage model ages (2.5-2.7 Ga), revealing a juvenile crustal growth event in the late Neoarchean. Because there is no record of coeval juvenile crustal growth in the other two cratons, we suggest a separate crustal evolution for the northern Tarim craton which was stayed far from the other two cratons before the early Paleoproterozoic. (C) 2010 Elsevier B.V. All rights reserved.
WOS关键词	PLASMA-MASS SPECTROMETRY ; LU-HF ; CONTINENTAL-CRUST ; DETRITAL ZIRCONS ; SOUTH CHINA ; LIAONING PROVINCE ; YANGTZE CRATON ; TRACE-ELEMENT ; GEOCHRONOLOGICAL EVIDENCE ; TECTONIC SIGNIFICANCE
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000280032200010
资助机构	National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; National Natural Science Foundation of China(40803009 ; National Natural Science Foundation of China(40803009 ; Hong Kong RGC(7043/07P ; Hong Kong RGC(7043/07P ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 40721063 ; 40721063 ; 7066/07P ; 7066/07P ; 40772130) ; 40772130) ; 7053/08P) ; 7053/08P) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; National Natural Science Foundation of China(40803009 ; National Natural Science Foundation of China(40803009 ; Hong Kong RGC(7043/07P ; Hong Kong RGC(7043/07P ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 40721063 ; 40721063 ; 7066/07P ; 7066/07P ; 40772130) ; 40772130) ; 7053/08P) ; 7053/08P) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; National Natural Science Foundation of China(40803009 ; National Natural Science Foundation of China(40803009 ; Hong Kong RGC(7043/07P ; Hong Kong RGC(7043/07P ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 40721063 ; 40721063 ; 7066/07P ; 7066/07P ; 40772130) ; 40772130) ; 7053/08P) ; 7053/08P) ; National Basic Research Program of China(2007CB411308) ; National Basic Research Program of China(2007CB411308) ; National Natural Science Foundation of China(40803009 ; National Natural Science Foundation of China(40803009 ; Hong Kong RGC(7043/07P ; Hong Kong RGC(7043/07P ; CAS/SAFEA International Partnership Program for Creative Research Teams ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 40721063 ; 40721063 ; 7066/07P ; 7066/07P ; 40772130) ; 40772130) ; 7053/08P) ; 7053/08P)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/72452]
专题	中国科学院地质与地球物理研究所
通讯作者	Yuan, Chao
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, 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	Long, Xiaoping,Yuan, Chao,Sun, Min,et al. Archean crustal evolution of the northern Tarim craton, NW China: Zircon U-Pb and Hf isotopic constraints[J]. PRECAMBRIAN RESEARCH,2010,180(3-4):272-284.
APA	Long, Xiaoping.,Yuan, Chao.,Sun, Min.,Zhao, Guochun.,Xiao, Wenjiao.,...&Hu, Aiqin.(2010).Archean crustal evolution of the northern Tarim craton, NW China: Zircon U-Pb and Hf isotopic constraints.PRECAMBRIAN RESEARCH,180(3-4),272-284.
MLA	Long, Xiaoping,et al."Archean crustal evolution of the northern Tarim craton, NW China: Zircon U-Pb and Hf isotopic constraints".PRECAMBRIAN RESEARCH 180.3-4(2010):272-284.