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Partitioning of Si and O between liquid iron and silicate melt: A two-phase ab-initio molecular dynamics study

文献类型：期刊论文

作者Zhang, Yigang1; Guo, Guangjun2
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2009-09-22
卷号36
ISSN号0094-8276
DOI10.1029/2009GL039751
文献子类Article
英文摘要The magma ocean process in the early history of the Earth has a great influence on the light element identities and contents of the core which subsequently affect the energy of the geodynamo provided by the compositional convection and the inner core growth through their effect on the phase diagram of iron alloy. In the present work, a two-phase ab-initio molecular dynamics method is established to study the solubility of silicon and oxygen in liquid iron in equilibrium with silicate melt. The ab-initio results are found to be in close agreement with experimental data. At the base of a deep magma ocean (39 GPa and 3116 K), liquid iron contains 2.7 wt% silicon and 0.5 wt% oxygen at the current bulk Earth composition. The oxygen content is low compared with its current estimate in the core, indicating a deeper magma ocean may need to be invoked. Citation: Zhang, Y., and G. Guo (2009), Partitioning of Si and O between liquid iron and silicate melt: A two-phase ab-initio molecular dynamics study, Geophys. Res. Lett., 36, L18305, doi:10.1029/2009GL039751.
WOS关键词EARTHS CORE ; OXIDATION-STATE ; OXYGEN FUGACITY ; CONSTRAINTS ; DIFFERENTIATION ; TEMPERATURE ; ACCRETION ; PRESSURE ; ELEMENTS ; METALS
WOS研究方向Geology
语种英语
WOS记录号WOS:000270234600006
出版者AMER GEOPHYSICAL UNION
资助机构Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; Chinese Academy of Sciences(KZCX2-YW-Q08-1) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; National Natural Science Foundation of China(40674050) ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution
源URL[http://ir.iggcas.ac.cn/handle/132A11/71681]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Yigang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Study Earths Deep Interior, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yigang,Guo, Guangjun. Partitioning of Si and O between liquid iron and silicate melt: A two-phase ab-initio molecular dynamics study[J]. GEOPHYSICAL RESEARCH LETTERS,2009,36.
APA Zhang, Yigang,&Guo, Guangjun.(2009).Partitioning of Si and O between liquid iron and silicate melt: A two-phase ab-initio molecular dynamics study.GEOPHYSICAL RESEARCH LETTERS,36.
MLA Zhang, Yigang,et al."Partitioning of Si and O between liquid iron and silicate melt: A two-phase ab-initio molecular dynamics study".GEOPHYSICAL RESEARCH LETTERS 36(2009).

入库方式： OAI收割

来源：地质与地球物理研究所

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