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Pertition of radiogenic elements for the FeS melt -Behavior of heat source elements during Earth's core formation-

FeS熔体的放射性元素的分布 -地核形成过程中热源元素的行为-

基本信息

批准号：
06804030
负责人：
KOIDE Yoshiyuki
金额：
$ 1.41万
依托单位：
Kanagawa Prefectural Museum of Cultural History
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

项目摘要

We had already published the databases of the cosmochemistry, meteorites, planetary physics and planetary chemistry. We complied the databases of earth Earth, FeS and experimental results of high-pressure and high-temperature, and are prepared to publish.We revealed that the raw material of the Earth included much amount of the FeS.We pointed out that FeS could firstly melt in the magma ocean of early Earth, and sink into the deep. Expectation in our project, radiogenic elements in FeS melt should be an important heat source of the Earth, and have an important influence upon the heat evolution of the Earth.We carried out the exprtiments of the rock fusion in the electric fumace under the controlled temperature. The furnace on the market was modified for our especial purpose. The apparatus made large saample and was useful for the partition of the trace elements. These attempts lead to an advance step of the experiments under the controlled gas condition. We developed a brand new system of the closed vessel. We are carrying experiment out and are determining the sinking condition of FeS melt and partition coefficients of heat source elements.We recognize the importance again that the partition coefficients of teh heat source elements to FeS melt determine.

我们已经发布了宇宙化学、陨石、行星物理和行星化学的数据库。编制了地球地球、FeS和高压高温实验结果数据库，并准备发表。我们发现地球的原料中含有大量的FeS。指出FeS可能首先在地球早期的岩浆海中熔化，然后下沉到深部。预计FeS熔体中的放射性成因元素是地球的重要热源，对地球的热演化有重要影响。在控制温度的条件下，在电炉中进行了岩石熔炼实验。市场上的炉子是为我们的特殊目的而改装的。该仪器制作了大量的样品，对微量元素的划分很有用。这些尝试使可控气体条件下的实验又向前迈进了一步。我们开发了一种全新的密闭容器系统。我们正在进行实验，确定FeS熔体的下沉条件和热源元件的分配系数。我们再次认识到热源元件的分配系数对FeS熔体的重要性。