Element partitioning between minearls and silicate melt under high pressure and its implications for the evolution of the terrestrial planets

关于原始地幔组成材料（PM 1）、高密度基础（JB 2）和Cr-diopside（CD 1）的高压力熔融实验从3至23.5 GPpa的性能，以及高压矿物/硅熔融分区协同作用， D，对主要和痕量元素进行了测量。主要元素的化学分析用电子探针微分析仪进行了分析，并集中了由二级离子质谱仪测量的跟踪元素。从PM 1在15 GPa的时间研究实验中发现，至少在一小时内，需要达到主要和共存的硅酸盐之间的均衡条件。在PM 1的情况下，Majorite/silicate melt和Mg-perovskite/silicate melt的D被测量。加内特、临床幽门螺杆菌和Ca-Perovskite/silicate熔融D也是用JB 2和CD 1测量的。在大多数被观察到的高压矿物中，D值被很好地分解时，当元素的离子半径变得大于90时，元素的离子半径也大于90时，将集中在硅熔融中。However，Ca-Perovskite/Silicate熔体系统显示不同的分区行为： Ca-Perovskite可以将电离辐射的元素与电离辐射的元素合并在一起，在60 - 80 pm时与硅熔体。It was also observed that D2 Na D2.显然，它在压力下的增加是如此的增加。Although this behavior of D2 Na D2. May be explained by substitution process， this Observation can be explained by Relative shrinkage of Na-I-D-1 ion。If NaイイD1+イエD1 relatively decrease in size for 3%， the observed change inイイD2 NaイエD2 can be·ained。

High pressure melting experiments on primitive mantle composition material (PM1), thoreiitic basalt (JB2) and Cr-diopside (CD1) were performed from 3 to 23.5 Gpa, and high pressure mineral/silicate melt partition coefficients, D, were measured for major and trace elements. Chemical analysis of major elements was carried out with and Electron Prove Micro Analyzer, and concentrations of trace elements were measured by Secondary Ion Mass Spectrometer. From the time study experiments of PM1 at 15GPa, it was found that at least one hour is required to achieve equilibrium condition between majorite and coexisting silicate melt. In the case of PM1, D of Majorite/silicate melt and Mg-perovskite/silicate melt were measured. D of Garnet, Clino-pyroxene and Ca-perovskite/silicate melt were also measured by using JB2 and CD1.In most of the observed high pressure minerals, D-value was remarkably decreased when the ionic radius of the elements become larger than 90 pm.Therefore, the elements whose ionic radius are larger than 90 pm will concentrate in silicate melt. However, Ca-perovskite/silicate melt system showed different partitioning behavior: Ca-perovskite can accommodate the elements whose ionic radius are 90-110 pm, and the elements with ionic radius of 60 - 80 pm are concentrated in silicate melt. It was also observed that DィイD2NaィエD2. Was obviously increased with increase in pressure. Although this behavior of DィイD2NaィエD2. May be explained by substitution process, this observation can be explained by relative shrinkage of NaィイD1+ィエD1 ion. If NaィイD1+ィエD1 relatively decrease in size for 3%, the observed change in DィイD2NaィエD2 can be explained.