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Progress in Li isotopes of mantle peridotites from the North China Craton

文献类型：期刊论文

作者Tang YanJie1,2; Ying JiFeng1,2
刊名ACTA PETROLOGICA SINICA
出版日期2022-12-01
卷号38期号:12页码:3673-3682
ISSN号1000-0569
关键词North China Craton Mantle peridotite Lithium isotopes Lithospheric mantle Melt-rock interaction
DOI10.18654/1000-0569/2022.12.07
英文摘要As a representative of untraditional stable isotopic systems, the lithium (Li)isotope has been widely used to trace a lot of geological processes related to melts and fluids, including earth surface and deep earth. The highly heterogeneous characteristic of Li concentrations and Li isotopic compositions of mantle-derived peridotite xenoliths is a combined result of isotopic fractionation during the interaction between melt/fluid and mantle peridotites and Li isotopic diffusive fractionation between mantle minerals during the xenolith cooling. The latter is usually recorded by compositional characteristics of the edge of mineral grains. Since Li diffusion is slower in olivine than in pyroxene, the Li concentration and isotopic composition in the core of large olivine grain can better reflect the primary composition of the lithospheric mantle. In contrast, pyroxene's compositional characteristics prefer recording the later processes. Many studies on lithium isotopic compositions of numerous mantle xenoliths demonstrate that the lithospheric mantle beneath the North China Craton has been modified by different melts/ fluids released from the altered oceanic crust during subduction, the residual subducted plate in the deep mantle, and the upwelling asthenosphere. Due to the multiple stages and various degrees of modification, the compositional characteristics of mantle peridotites in the eastern and central parts of the North China Craton are systematically different. The joint tracing research of Li isotopes and other geochemical indices is the future development trend of mantle geochemistry
WOS关键词SITU TRACE-ELEMENTS ; SINO-KOREAN CRATON ; LITHOSPHERIC MANTLE ; CENOZOIC BASALTS ; EASTERN CHINA ; TAIHANG MOUNTAINS ; LITHIUM ISOTOPES ; HIGH-TEMPERATURE ; VOLCANIC-ROCKS ; SR ISOTOPES
WOS研究方向Geology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000905312500007
源URL[http://ir.iggcas.ac.cn/handle/132A11/106912]  
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Tang YanJie
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Tang YanJie,Ying JiFeng. Progress in Li isotopes of mantle peridotites from the North China Craton[J]. ACTA PETROLOGICA SINICA,2022,38(12):3673-3682.
APA Tang YanJie,&Ying JiFeng.(2022).Progress in Li isotopes of mantle peridotites from the North China Craton.ACTA PETROLOGICA SINICA,38(12),3673-3682.
MLA Tang YanJie,et al."Progress in Li isotopes of mantle peridotites from the North China Craton".ACTA PETROLOGICA SINICA 38.12(2022):3673-3682.

入库方式： OAI收割

来源：地质与地球物理研究所

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