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Lithium isotopic composition of Alaskan-type intrusion and its implication

文献类型：期刊论文

作者Su, Ben-Xun1,2; Chen, Chen1,2; Bai, Yang1,2; Pang, Kwan-Nang3; Qin, Ke-Zhang1,2; Sakyi, Patrick Asamoah4
刊名LITHOS
出版日期2017-08-01
卷号286页码:363-368
关键词Li isotopes Alaskan-type intrusion Arc magmatism Olivine Magma differentiation
ISSN号0024-4937
DOI10.1016/j.lithos.2017.06.024
文献子类Article
英文摘要To determine whether fractionation of Li isotopes could occur at high temperatures, we examined major element and Li isotopic compositions of olivine from the Xiadong intrusion, an Alaskan-type complex in the Central Asian Orogenic Belt. Olivine in thirteen dunites, displaying characteristic cumulus textures, yielded large variations in Li concentration (0.10 to 11.18 ppm) and isotopic composition (delta Li-7 = - 7.18 to + 34.41%.). These variations are too large to be attributed entirely to diffusive processes. The correlations between Li elemental or isotopic composition and differentiation indices such as Fo and MnO contents of olivine, and NiO content of chromite, suggest probable Li isotope fractionation during early stage of differentiation. We speculate that while Li behaves mildly incompatible during differentiation, Li-7 is preferentially incorporated into olivine relative to Li-6 during early stage crystallization from arc magmas. Relatively high Li concentrations and low delta Li-7 in arc magmas might be the result of substantial olivine fractionation prior to eruption. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词SLAB-DERIVED FLUIDS ; VOLCANIC ARC LAVAS ; FRACTIONATION ; LI ; DIFFUSION ; MANTLE ; OLIVINE ; COMPLEX ; IRON ; DIFFERENTIATION
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000408286700023
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41522203 ; National Key Research and Development Program of China(2017YFC0601204) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41173011) ; National Natural Science Foundation of China(41522203 ; National Key Research and Development Program of China(2017YFC0601204) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41173011) ; National Natural Science Foundation of China(41522203 ; National Key Research and Development Program of China(2017YFC0601204) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41173011) ; National Natural Science Foundation of China(41522203 ; National Key Research and Development Program of China(2017YFC0601204) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2016067) ; 41173011)
源URL[http://ir.iggcas.ac.cn/handle/132A11/61889]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Su, Ben-Xun; Sakyi, Patrick Asamoah
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Acad Sinica, Inst Earth Sci, Taipei 11529, Taiwan
4.Univ Ghana, Sch Phys & Math Sci, Dept Earth Sci, POB LG 58, Legon, Ghana
推荐引用方式
GB/T 7714		 Su, Ben-Xun,Chen, Chen,Bai, Yang,et al. Lithium isotopic composition of Alaskan-type intrusion and its implication[J]. LITHOS,2017,286:363-368.
APA Su, Ben-Xun,Chen, Chen,Bai, Yang,Pang, Kwan-Nang,Qin, Ke-Zhang,&Sakyi, Patrick Asamoah.(2017).Lithium isotopic composition of Alaskan-type intrusion and its implication.LITHOS,286,363-368.
MLA Su, Ben-Xun,et al."Lithium isotopic composition of Alaskan-type intrusion and its implication".LITHOS 286(2017):363-368.

入库方式： OAI收割

来源：地质与地球物理研究所

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