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Multistage mantle metasomatism deciphered by Mg-Sr-Nd-Pb isotopes in the Leucite Hills lamproites

文献类型：期刊论文

作者Sun, Yang2,3; Teng, Fang-Zhen1; Pang, Kwan-Nang3; Ying, Ji-Feng4; Kuehner, Scott1
刊名CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
出版日期2021-06-01
卷号176期号:6页码:12
关键词Lamproites Enriched mantle I Mg− Sr− Nd− Pb isotopes Carbonate metasomatism Leucite Hills
ISSN号0010-7999
DOI10.1007/s00410-021-01801-9
英文摘要Cratonic lamproites bear extreme Sr-Nd-Pb isotopic compositions widely known as enriched mantle I (EMI), yet the origin of the EMI reservoir remains controversial. Here, we explore this issue by examining Mg-Sr-Nd-Pb isotopic compositions of lamproites from Leucite Hills, Wyoming, USA. The delta Mg-26 values vary from the range of the normal mantle to lower values (- 0.43 to - 0.18 parts per thousand), correlating with indices of the degree of carbonate metasomatism, an observation that can be best explained through mantle metasomatism by subducted carbonate-bearing sediments. With increasing extent of carbonate metasomatism, these samples display less extreme EMI Sr-Nd-Pb isotopic signatures, arguing for at least two metasomatic events that occurred in their mantle sources. The early metasomatic event associated with subducted continent-derived siliciclastic sediments led to the formation of the EMI Sr-Nd-Pb isotopic signatures while the recent carbonate metasomatism produced the light Mg isotopic signature but diluted the EMI Sr-Nd-Pb isotopic signatures. Our study indicates that a combination of Mg and Sr-Nd-Pb isotopes could be an effective tool in deciphering multiple-stage metasomatic events in mantle sources and places new constraints on the generation of enriched mantle reservoirs.
WOS关键词PARTIAL MELTING EXPERIMENTS ; OCEANIC ISLAND BASALTS ; LITHOSPHERIC MANTLE ; TEMPORAL EVOLUTION ; SOURCE COMPONENTS ; WYOMING PROVINCE ; TRACE-ELEMENT ; 3 GPA ; GEOCHEMISTRY ; CARBONATITE
资助项目National Natural Science Foundation of China[41873036] ; National Natural Science Foundation of China[41703031] ; National Natural Science Foundation of China[41729001] ; China Postdoctoral Science Foundation[2017M620899] ; Ministry of Science and Technology, Taiwan, Republic of China[MOST 109-2116-M-001-018]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000652207400001
出版者SPRINGER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, Republic of China ; Ministry of Science and Technology, Taiwan, Republic of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, Republic of China ; Ministry of Science and Technology, Taiwan, Republic of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, Republic of China ; Ministry of Science and Technology, Taiwan, Republic of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, Republic of China ; Ministry of Science and Technology, Taiwan, Republic of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/101185]  
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Sun, Yang
作者单位1.Univ Washington, Dept Earth & Space Sci, Isotope Lab, Seattle, WA 98195 USA
2.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Guangdong, Peoples R China
3.Acad Sinica, Inst Earth Sci, Taipei 11529, Taiwan
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		 Sun, Yang,Teng, Fang-Zhen,Pang, Kwan-Nang,et al. Multistage mantle metasomatism deciphered by Mg-Sr-Nd-Pb isotopes in the Leucite Hills lamproites[J]. CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,2021,176(6):12.
APA Sun, Yang,Teng, Fang-Zhen,Pang, Kwan-Nang,Ying, Ji-Feng,&Kuehner, Scott.(2021).Multistage mantle metasomatism deciphered by Mg-Sr-Nd-Pb isotopes in the Leucite Hills lamproites.CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,176(6),12.
MLA Sun, Yang,et al."Multistage mantle metasomatism deciphered by Mg-Sr-Nd-Pb isotopes in the Leucite Hills lamproites".CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 176.6(2021):12.

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来源：地质与地球物理研究所

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