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Nickel Isotope Fractionation During Magmatic Differentiation

文献类型：期刊论文

作者Yang, Xi-Ming6; Wang, Shui-Jiong6; Zhang, Ya-Wen6; Dong, Xu-Han6; Teng, Fang-Zhen3; Helz, Rosalind T.1; Huang, Jian5; Li, Xian-Hua2; Huang, Shichun4
刊名GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
出版日期2023-06-01
卷号24期号:6页码:14
关键词magmatic differentiation nickel isotope non-traditional isotope continental crust
DOI10.1029/2023GC010926
英文摘要The behavior of nickel (Ni) isotopes during magmatic differentiation is not adequately explored. Here, we find that tholeiitic rocks in the Kilauea Iki (KI) lava lake, Hawai'i, show progressively lighter Ni isotopic compositions with increasing magmatic differentiation, whereas calc-alkaline rocks from the thick Kamchatka arc (30-45 km), located at the convergent boundary of the Eurasian and Pacific plates show increasing Ni isotope values as MgO and Ni decrease. Forty-three global intermediate-felsic continental igneous rocks analyzed in this study display large Ni isotopic variations, with the Eoarchean samples having light Ni isotopic compositions that fall in the trend defined by the KI lavas, and the post-Eoarchean samples showing systematically heavier Ni isotopic compositions overlapping those of Kamchatka arc rocks. The isotopic dichotomy results from the crystallization of isotopically heavy magnetite during low-pressure differentiation of KI lavas, whereas the participation of sulfide separation that removes isotopically light Ni during high-pressure differentiation of magmas traversing thick continental crust. Combined with Rhyolite-MELTS and sulfur concentration at sulfide saturation simulations, we demonstrate that the Ni isotope fractionation during magmatic differentiation is mainly controlled by the tempo of magnetite crystallization and sulfide formation, which is a function of pressure, oxygen fugacity, and water activity. High-pressure calc-alkaline differentiation usually suppresses magnetite crystallization while stabilizing sulfide, leading to heavy Ni isotopic compositions for the evolved magmas, significantly deviating from the low-pressure fractionation trend seen in the KI lavas. Ni isotopes can be used in the future as a tracer of magmatic differentiation and processes of continent formation and differentiation.
WOS关键词IKI LAVA LAKE ; NORTH CHINA ; CONTINENTAL-CRUST ; SKAERGAARD INTRUSION ; SUPERIOR PROVINCE ; OXYGEN FUGACITY ; SULFIDE PHASES ; DABIE OROGEN ; ALEUTIAN ARC ; ANSHAN AREA
资助项目National Nature Science Foundation of China ; National Key R&D Program of China[2022YFF0801004] ; National Key R&D Program of China[41973010] ; [2019YFA0708404]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:001000472600001
资助机构National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/110995]  
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Wang, Shui-Jiong
作者单位1.US Geol Survey, Reston, VA USA
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
3.Univ Washington, Dept Earth & Space Sci, Isotope Lab, Seattle, WA USA
4.Univ Tennessee, Dept Earth & Planetary, Knoxville, TN USA
5.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei, Peoples R China
6.China Univ Geosci Beijing, State Key Lab Geol Proc & Mineral Resources, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Xi-Ming,Wang, Shui-Jiong,Zhang, Ya-Wen,et al. Nickel Isotope Fractionation During Magmatic Differentiation[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2023,24(6):14.
APA Yang, Xi-Ming.,Wang, Shui-Jiong.,Zhang, Ya-Wen.,Dong, Xu-Han.,Teng, Fang-Zhen.,...&Huang, Shichun.(2023).Nickel Isotope Fractionation During Magmatic Differentiation.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,24(6),14.
MLA Yang, Xi-Ming,et al."Nickel Isotope Fractionation During Magmatic Differentiation".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 24.6(2023):14.

入库方式： OAI收割

来源：地质与地球物理研究所

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