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Trace elements in olivine: Proxies for petrogenesis, mineralization and discrimination of mafic-ultramafic rocks

文献类型：期刊论文

作者Wang, Jing5,6,7; Su, Ben-Xun5,6,7; Robinson, Paul T.5; Xiao, Yan7,8; Bai, Yang5,6,7; Liu, Xia5,6,7; Sakyi, Patrick Asamoah1; Jing, Jie-Jun2; Chen, Chen3; Liang, Zi5
刊名LITHOS
出版日期2021-05-01
卷号388页码:9
关键词Olivine Trace elements Mantle xenolith Ophiolite Layered intrusion Alaskan-type intrusion
ISSN号0024-4937
DOI10.1016/j.lithos.2021.106085
英文摘要Olivine isa ubiquitous mineral in mafic-ultramafic rocks and has been widely used as a mineral marker in various geological processes. However, its development of trace elements is limited. Here we present newly-obtained trace element data Li-7, Al-27, Si-29, P-31, Ca-43, Sc-45, Ti-49, V-51, Cr-53, Mn-55, Co-59, Ni-60, and Zn-66 of olivine in typical mantle xenoliths, mantle peridotites in ophiolites, and plutonic rocks from layered and Alaskan-type intrusions to de-velop trace element proxies for the petrogenesis, mineralization and discrimination of various mafic-ultramafic rocks. Residual olivine grains in mantle xenoliths and ophiolitic peridotites, which represent residues of mantle melting, have higher Ni/Co (>20) and Ni/Mn (>2) ratios than magmatic olivine (Ni/Co < 20, Ni/Mn < 2), which are consistent with the compatibilities of these elements during partial melting and magma differentiation. Lower Ni content, and lower Ni/Co and Ni/Mn ratios at a given Fo content can distinguish olivine in Alaskan-type intrusions from layered intrusions, reflecting the nature of their mantle sources. The V and Sc contents and V/Sc ratios in olivine can distinguish mantle xenoliths (V > 2 ppm, V/Sc > 0.5) from ophiolitic peridotites (V < 2 ppm, V/Sc < 0.5), indicating a more reduced state of continental lithospheric mantle compared to the oce-anic lithospheric mantle. As a consequence, the four occurrences of mafic-ultramafic rocks can be distinguished by olivine with (Sc & times; 10)-(Ti x 2)-Zn and V/Sc-(Co/Ni x 2)-(Zn/Mn x 5) ternary diagrams. In addition, Li, Ti and P contents in olivine are good tracers of melt/fluid metasomatism, whereas Ni/Co, Ni/Mn and Mn/Zn ratios are indicators of chromite mineralization. Therefore, trace elements in olivine can be used as chemical proxies to dis-tinguish the origin of various mafic-ultramafic rocks, as well as the processes by which they evolved. (C) 2021 Elsevier B.V. All rights reserved.
资助项目National Natural Science Foundation of China[41973012] ; National Natural Science Foundation of China[91755205] ; National Natural Science Foundation of China[41772055] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000636394800004
出版者ELSEVIER
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 ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/101090]  
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
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Wang, Jing; Su, Ben-Xun
作者单位1.Univ Ghana, Dept Earth Sci, POB LG 58, Legon, Ghana
2.Vrije Univ Amsterdam, Dept Earth Sci, Fac Sci, De Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands
3.Chinese Acad Sci, Key Lab Mineral & Metallogeny, Guangzhou Inst Geochem, Guangzhou 510460, Peoples R China
4.Northwest Univ, State Key Lab Continental Dynam, Dept Geol, Xian 710069, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.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		 Wang, Jing,Su, Ben-Xun,Robinson, Paul T.,et al. Trace elements in olivine: Proxies for petrogenesis, mineralization and discrimination of mafic-ultramafic rocks[J]. LITHOS,2021,388:9.
APA Wang, Jing.,Su, Ben-Xun.,Robinson, Paul T..,Xiao, Yan.,Bai, Yang.,...&Bao, Zhi-An.(2021).Trace elements in olivine: Proxies for petrogenesis, mineralization and discrimination of mafic-ultramafic rocks.LITHOS,388,9.
MLA Wang, Jing,et al."Trace elements in olivine: Proxies for petrogenesis, mineralization and discrimination of mafic-ultramafic rocks".LITHOS 388(2021):9.

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来源：地质与地球物理研究所

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