DISSOLUTION OF K IN MOLTEN IRON AT HIGH-PRESSURE AND TEMPERATURE

被引：30

作者：

ITO, E ^{[1
]}

MOROOKA, K ^{[1
]}

UJIKE, O ^{[1
]}

机构：

[1] TOYAMA UNIV, DEPT EARTH SCI, TOYAMA 930, JAPAN

来源：

GEOPHYSICAL RESEARCH LETTERS | 1993年 / 20卷 / 15期

关键词：

D O I：

10.1029/93GL01538

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Partitioning of K between molten iron and silicate melt was examined at about 26 GPa and 2600-degrees-C using a mixture of pure iron and natural microcline as the starting material. The dissolution of K in molten iron up to about 0.2 wt % was confirmed. The distribution coefficient of K between molten iron and silicate melt was about 3.8x10(-2) (atomic ratio). This value suggests the presence of 5 ppm K in the earth's core, yielding 3x10(10) W for the present day heat generation by K.

引用

页码：1651 / 1654

页数：4

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