The 2.65 Ga A-type granite in the northeastern Yangtze craton: Petrogenesis and geological implications

doi:10.1016/j.precamres.2015.01.003

	The 2.65 Ga A-type granite in the northeastern Yangtze craton: Petrogenesis and geological implications
	Zhou, Guangyan 1; Wu, Yuanbao 1; Gao, Shan 1; Yang, Jianzhou 1; Zheng, Jianping 1; Qin, Zhengwei 1; Wang, Hao2 ; Yang, Saihong 2
刊名	PRECAMBRIAN RESEARCH
	2015-03-01
卷号	258 页码:247-259
关键词	Yangtze Craton A-type granite Archean magmatism Craton stabilization Early evaluation
ISSN号	0301-9268
DOI	10.1016/j.precamres.2015.01.003
文献子类	Article
英文摘要	The presence of old residual continental crustal rocks in cratons is crucial for investigation of their early evolution. Due to the poor exposure of Archean rocks, the early evolution of the Yangtze Craton has not been well constrained yet. In this study, a combined study of zircon U-Pb and Hf-O isotopes, as well as whole rock major and trace elements and Nd isotopes have been conducted for a granite pluton at Huji town, in the northern part of the Yangtze Craton. U-Pb dating for magmatic zircons yielded a weighted mean age of 2656 +/- 6 Ma, revealing another Archean outcrop in the Yangtze Craton besides the Kongling terrane. The granite samples show relatively evaluated (K2O + Na2O)/CaO, TFeO/MgO ratios, and Zr, Nb, Ce, Ga and Y contents, sharing the same features as the A-type granite. They have pronounced Eu, Sr and Ba negative anomalies on the primitive mantle-normalized trace element spidergram, implying the residual of plagioclase in the magma sources. Their high Zr contents of 440-529 ppm correspond to initial magma temperatures of 930-962 degrees C. The zircons have negative epsilon(Hf)(t) values of -2.7 to 0.1, and Hf model ages of ca. 3.2 Ga, respectively. The delta O-18 values of the zircons range between 4.94 and 5.72% and give an average of 5.26 +/- 0.14%., suggesting no contribution of supracrustal rock into the host magma. Therefore, the Hf model ages indicate the generation of the Huji granite by reworking of ca. 3.2 Ga juvenile crustal rocks. Combined with previous studies, the finding of the Neoarchean Huji granites with ca. 3.2 Ga Hf model ages suggests the widespread of Archean basement in the Yangtze Craton. The occurrence of the ca. 2.65 Ga Huji granites likely records the thermally stable lithosphere and thus heralds the craton stabilization of the eastern part of the Yangtze Block. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词	U-PB AGE ; NORTH CHINA CRATON ; ARCHEAN CRUSTAL EVOLUTION ; PLASMA-MASS SPECTROMETRY ; CENTRAL KAAPVAAL CRATON ; HEAT-PRODUCING ELEMENTS ; HF ISOTOPE COMPOSITION ; SOUTH CHINA ; CONTINENTAL-CRUST ; VREDEFORT DOME
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000349875200014
资助机构	National Natural Science Foundation of China(41273035 ; National Natural Science Foundation of China(41273035 ; Ministry of Education of China(B07039) ; Ministry of Education of China(B07039) ; 41173016) ; 41173016) ; National Natural Science Foundation of China(41273035 ; National Natural Science Foundation of China(41273035 ; Ministry of Education of China(B07039) ; Ministry of Education of China(B07039) ; 41173016) ; 41173016) ; National Natural Science Foundation of China(41273035 ; National Natural Science Foundation of China(41273035 ; Ministry of Education of China(B07039) ; Ministry of Education of China(B07039) ; 41173016) ; 41173016) ; National Natural Science Foundation of China(41273035 ; National Natural Science Foundation of China(41273035 ; Ministry of Education of China(B07039) ; Ministry of Education of China(B07039) ; 41173016) ; 41173016)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86962]
专题	中国科学院地质与地球物理研究所
通讯作者	Wu, Yuanbao
作者单位	1.China Univ Geosci, Fac Earth Sci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 2.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	Zhou, Guangyan,Wu, Yuanbao,Gao, Shan,et al. The 2.65 Ga A-type granite in the northeastern Yangtze craton: Petrogenesis and geological implications[J]. PRECAMBRIAN RESEARCH,2015,258:247-259.
APA	Zhou, Guangyan.,Wu, Yuanbao.,Gao, Shan.,Yang, Jianzhou.,Zheng, Jianping.,...&Yang, Saihong.(2015).The 2.65 Ga A-type granite in the northeastern Yangtze craton: Petrogenesis and geological implications.PRECAMBRIAN RESEARCH,258,247-259.
MLA	Zhou, Guangyan,et al."The 2.65 Ga A-type granite in the northeastern Yangtze craton: Petrogenesis and geological implications".PRECAMBRIAN RESEARCH 258(2015):247-259.