Lithium isotopic composition of Alaskan-type intrusion and its implication

doi:10.1016/j.lithos.2017.06.024

CORC > 地质与地球物理研究所 > 中国科学院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

	Lithium isotopic composition of Alaskan-type intrusion and its implication
	Su, Ben-Xun 1,2; Chen, Chen 1,2; Bai, Yang 1,2; Pang, Kwan-Nang 3; Qin, Ke-Zhang 1,2; Sakyi, Patrick Asamoah 4
刊名	LITHOS
	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
DOI	10.1016/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
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000408286700023
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)
内容类型	期刊论文
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.