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  4. 岩石圈演化国家重点实验室
Light oxygen isotopes in mantle-derived magmas reflect assimilation of sub-continental lithospheric mantle material

文献类型：期刊论文

作者Xu, Jing-Yao2,4; Giuliani, Andrea5; Li, Qiu-Li1,2,4; Lu, Kai1,2; Carles Melgarejo, Joan6; Griffin, William L.3
刊名NATURE COMMUNICATIONS
出版日期2021-11-02
卷号12期号:1页码:13
DOI10.1038/s41467-021-26668-z
英文摘要Isotopically light oxygen in mantle derived magmas is generally attributed to the occurrence of deeply subducted crustal material in the mantle. New analyses of olivine in kimberlites worldwide suggest that assimilation of lithospheric mantle during magma ascent is the source of isotopically light oxygen in these, and, potentially other continental magmas. Oxygen isotope ratios in mantle-derived magmas that differ from typical mantle values are generally attributed to crustal contamination, deeply subducted crustal material in the mantle source or primordial heterogeneities. Here we provide an alternative view for the origin of light oxygen-isotope signatures in mantle-derived magmas using kimberlites, carbonate-rich magmas that assimilate mantle debris during ascent. Olivine grains in kimberlites are commonly zoned between a mantle-derived core and a magmatic rim, thus constraining the compositions of both mantle wall-rocks and melt phase. Secondary ion mass spectrometry (SIMS) analyses of olivine in worldwide kimberlites show a remarkable correlation between mean oxygen-isotope compositions of cores and rims from mantle-like O-18/O-16 to lower 'crustal' values. This observation indicates that kimberlites entraining low-O-18/O-16 olivine xenocrysts are modified by assimilation of low-O-18/O-16 sub-continental lithospheric mantle material. Interaction with geochemically-enriched domains of the sub-continental lithospheric mantle can therefore be an important source of apparently 'crustal' signatures in mantle-derived magmas.
WOS关键词TRACE-ELEMENT GEOCHEMISTRY ; CR-POOR ; MONASTERY KIMBERLITE ; ILMENITE MEGACRYSTS ; SOUTH-AFRICA ; OLIVINE ; METASOMATISM ; INSIGHTS ; DEEP ; EVOLUTION
资助项目National Natural Science Foundation of China[41773044] ; China Postdoctoral Science Foundation[2020M670447] ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences[SKL-K202001] ; Swiss National Foundation (Ambizione fellowship)[PZ00P2_180126/1]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000714189200018
出版者NATURE PORTFOLIO
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship) ; Swiss National Foundation (Ambizione fellowship)
源URL[http://ir.iggcas.ac.cn/handle/132A11/103781]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Li, Qiu-Li
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Macquarie Univ, ARC Ctr Excellence Core Crust Fluid Syst CCFS & G, Sydney, NSW 2109, Australia
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Swiss Fed Inst Technol, Dept Earth Sci, Inst Geochem & Petrol, CH-8092 Zurich, Switzerland
6.Univ Barcelona, Fac Earth Sci, Dept Mineral Petrol & Appl Geol, Barcelona 08028, Spain
推荐引用方式
GB/T 7714		 Xu, Jing-Yao,Giuliani, Andrea,Li, Qiu-Li,et al. Light oxygen isotopes in mantle-derived magmas reflect assimilation of sub-continental lithospheric mantle material[J]. NATURE COMMUNICATIONS,2021,12(1):13.
APA Xu, Jing-Yao,Giuliani, Andrea,Li, Qiu-Li,Lu, Kai,Carles Melgarejo, Joan,&Griffin, William L..(2021).Light oxygen isotopes in mantle-derived magmas reflect assimilation of sub-continental lithospheric mantle material.NATURE COMMUNICATIONS,12(1),13.
MLA Xu, Jing-Yao,et al."Light oxygen isotopes in mantle-derived magmas reflect assimilation of sub-continental lithospheric mantle material".NATURE COMMUNICATIONS 12.1(2021):13.

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来源：地质与地球物理研究所

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