Petrology and geochemistry of Zijinshan alkaline intrusive complex in Shanxi Province, western North China Craton: Implication for magma mixing of different sources in an extensional regime

doi:10.1016/j.lithos.2007.02.001

	Petrology and geochemistry of Zijinshan alkaline intrusive complex in Shanxi Province, western North China Craton: Implication for magma mixing of different sources in an extensional regime
	Ying, Jifeng ; Zhang, Hongfu ; Sun, Min ; Tang, Yanjie ; Zhou, Xinhua ; Liu, Xiaoming
刊名	LITHOS
	2007-10-01
卷号	98 期号:1-4 页码:45-66
关键词	alkaline complex crust-mantle interaction monzonite nepheline syenite North China Craton
ISSN号	0024-4937
DOI	10.1016/j.lithos.2007.02.001
文献子类	Article
英文摘要	In situ zircon U-Pb ages and Hf isotopic compositions and whole rock geochemical and Sr-Nd-Pb isotopic data are presented for the Zijinshan alkaline intrusive complex from the Shanxi Province, western North China Craton. Salic rocks dominate the complex with the monzonite occurring in the outermost and pseudoleucite phonolitic breccia in the center. The intrusion took place 127 Ma ago with the earliest emplacement of monzonite and the tennination of cryptoexplosive pseudoleucite phonolitic breccia. All rocks from this complex show LREE enrichment and HFSE depletion and exhibit enriched to depleted Sr-Nd isotopic features. The presence of inherited zircons and enriched Hf isotopic compositions in zircon rims, along with the enriched whole rock Sr-Nd isotopic compositions, indicate that the monzonite was formed through the mixing of lithospheric mantle-derived magma with lower crust derived melts. The diopside syenite and nepheline-bearing diopside syenite are more depleted than the monzonite in terms of the Sr and Nd isotopes, together with their very high concentrations of LILE, we proposed that they originated from a mixed mantle source of enriched lithospheric mantle and depleted asthenosphere. The nepheline syenite has very low concentrations of MgO, Ni, Cr, suggesting that the magma underwent significant crystal fractionation. The most depleted Sr and Nd isotopic compositions (((87)Sr/(86)Sr)(i) = 0.7036-0.7042, epsilon(Nd)(t) = -0.2-0.3) among all rock types indicate a great contribution of asthenosphere to the nepheline syenite. The Zijinshan complex and its related crust-mantle interaction occurred in an extensional environment which resulted in continuously asthenospheric upwelling. Such an extensional environment might have been developed during the post-orogenic stage of the Late Palcozoic amalgamation of North China Craton with Mongolian continents and subsequent Mongol-Okhotsk ocean closure. (c) 2007 Elsevier B.V All rights reserved.
WOS关键词	SINO-KOREAN CRATON ; LITHOSPHERIC MANTLE BENEATH ; EASTERN HEBEI PROVINCE ; TECTONIC IMPLICATIONS ; CONTINENTAL-CRUST ; ISOTOPIC EVIDENCE ; TRACE-ELEMENT ; PB ISOTOPE ; SHANDONG PROVINCE ; TAIHANG MOUNTAINS
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000250247200003
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/67976]
专题	中国科学院地质与地球物理研究所
通讯作者	Ying, Jifeng
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 3.NW Univ Xian, Dept Geol, Xian 710069, Peoples R China
推荐引用方式 GB/T 7714	Ying, Jifeng,Zhang, Hongfu,Sun, Min,et al. Petrology and geochemistry of Zijinshan alkaline intrusive complex in Shanxi Province, western North China Craton: Implication for magma mixing of different sources in an extensional regime[J]. LITHOS,2007,98(1-4):45-66.
APA	Ying, Jifeng,Zhang, Hongfu,Sun, Min,Tang, Yanjie,Zhou, Xinhua,&Liu, Xiaoming.(2007).Petrology and geochemistry of Zijinshan alkaline intrusive complex in Shanxi Province, western North China Craton: Implication for magma mixing of different sources in an extensional regime.LITHOS,98(1-4),45-66.
MLA	Ying, Jifeng,et al."Petrology and geochemistry of Zijinshan alkaline intrusive complex in Shanxi Province, western North China Craton: Implication for magma mixing of different sources in an extensional regime".LITHOS 98.1-4(2007):45-66.