Zircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle source

doi:10.1016/j.jseaes.2008.12.003

	Zircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle source
	Shellnutt, J. Gregory 1; Wang, Christina Yan 2; Zhou, Mei-Fu 3; Yang, Yueheng 4
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2009-06-02
卷号	35 期号:1 页码:45-55
关键词	Zircon Lu-Hf isotope A-type granite Peralkaline Metaluminous Panxi region SW China
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2008.12.003
文献子类	Article
英文摘要	Permian A-type granitoids of the Emeishan large igneous province (ELIP) in the Panxi region, SW China, are predominantly peralkaline and metaluminous in composition. In situ zircon Hf isotopic compositions along with whole rock trace element and Nd isotopic data are used to examine the probable source characteristics of these A-type granitic plutons. Zircons from the Baima and Taihe peralkaline plutons have weighted average epsilon Hf((T)) values of +8.7 +/- 0.4 and +9.2 +/- 1.0. whereas the Woshui and Huangcao metaluminous plutons have differing epsilon Hf((T)) values (+8.6 +/- 0.2 and +5.8 +/- 0.3, respectively). Previous studies have suggested that the plutons were derived by differentiation (e.g. fractionation or partial melting) of mafic magmas from an enriched mantle source similar to oceanic island basalt with little or no contribution from the crust (epsilon Nd((T)) = +11.3 to +3.2, Zr/Nb = 0.9-14.4, Rb/Nb = 0.1-8.4 and Th/Ta = <4.0). Therefore, we interpret the Hf isotopic data of the Baima, Taihe, Woshui and Huangcao plutons to be indicative of the Emeishan mantle plume. The similar zircon epsilon Hf((T)) values of the Woshui and Baima plutons indicates that spatially and temporally associated peralkaline and metaluminous A-type granitic rocks can originate from the same mantle source without crustal assimilation. (C) 2009 Elsevier Ltd. All rights reserved.
WOS关键词	U-PB GEOCHRONOLOGY ; PLUME-LITHOSPHERE INTERACTION ; LACHLAN FOLD BELT ; FLOOD BASALTS ; SOUTHEASTERN AUSTRALIA ; SOUTHWESTERN CHINA ; DEPLETED MANTLE ; GEOCHEMICAL CONSTRAINTS ; LAYERED INTRUSION ; MASS-SPECTROMETRY
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000264948700005
资助机构	Academia Sinica, Institute of Earth Sciences ; Academia Sinica, Institute of Earth Sciences ; Research Grant Council of Hong Kong ; Research Grant Council of Hong Kong ; SAR(HKU7065/06P) ; SAR(HKU7065/06P) ; Chinese 973 Project(2007CB411401) ; Chinese 973 Project(2007CB411401) ; Academia Sinica, Institute of Earth Sciences ; Academia Sinica, Institute of Earth Sciences ; Research Grant Council of Hong Kong ; Research Grant Council of Hong Kong ; SAR(HKU7065/06P) ; SAR(HKU7065/06P) ; Chinese 973 Project(2007CB411401) ; Chinese 973 Project(2007CB411401) ; Academia Sinica, Institute of Earth Sciences ; Academia Sinica, Institute of Earth Sciences ; Research Grant Council of Hong Kong ; Research Grant Council of Hong Kong ; SAR(HKU7065/06P) ; SAR(HKU7065/06P) ; Chinese 973 Project(2007CB411401) ; Chinese 973 Project(2007CB411401) ; Academia Sinica, Institute of Earth Sciences ; Academia Sinica, Institute of Earth Sciences ; Research Grant Council of Hong Kong ; Research Grant Council of Hong Kong ; SAR(HKU7065/06P) ; SAR(HKU7065/06P) ; Chinese 973 Project(2007CB411401) ; Chinese 973 Project(2007CB411401)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70626]
专题	中国科学院地质与地球物理研究所
通讯作者	Shellnutt, J. Gregory
作者单位	1.Acad Sinica, Inst Earth Sci, Taipei 11529, Taiwan 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 3.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 4.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	Shellnutt, J. Gregory,Wang, Christina Yan,Zhou, Mei-Fu,et al. Zircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle source[J]. JOURNAL OF ASIAN EARTH SCIENCES,2009,35(1):45-55.
APA	Shellnutt, J. Gregory,Wang, Christina Yan,Zhou, Mei-Fu,&Yang, Yueheng.(2009).Zircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle source.JOURNAL OF ASIAN EARTH SCIENCES,35(1),45-55.
MLA	Shellnutt, J. Gregory,et al."Zircon Lu-Hf isotopic compositions of metaluminous and peralkaline A-type granitic plutons of the Emeishan large igneous province (SW China): Constraints on the mantle source".JOURNAL OF ASIAN EARTH SCIENCES 35.1(2009):45-55.