Experimental study of elemental process of the earth's core formation-Noble gas geosientific approach-

地核形成元素过程的实验研究-稀有气体地球科学方法-

• 批准号: 06403002
• 负责人: MATSUDA Jun-ichi
• 金额: $ 23.55万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 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
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06403002/
• 关键词: noble gas; partition; mass spectrometer; core; high pressure; metal; silicate; 遷移金属錯体

We obtained the result that noble gases did not incorporated in metal at the experiment using graphite vessel in 1994, but noble gases were equally partitioned between metal and silicate when we used MgO vessel in 1995. We considered that considerable amounts of carbon dissolved in metal in the former experiment and gave effect on the partition of noble gases. The MgO vessel also made reaction with the sample, which we observed under SEM.We proceeded the experiment of partition mainly for nitrogen this year, and improved the device not to react the vessel with the sample. We used the lherzolite sample from Ichinomegata and iron with MgO vessel. We put Mo foil inside the MgO vessel and MgO under the iron sample to protect the reaction of the vessel with the sample. We artificially added carbon, and could finally control the carbon content in metal at our expected values. The carbon content in metal was 0.5 to wt.%, and nitrogen and noble gases were less partitioned into metal with increasing carbon content. Thus, we confirmed that the carbon gave effect on the partition of nitrogen and noble gases. We also examined the noble gases in iron meteorite, but consmogenic component was predominant.

我们在1994年用石墨容器实验中得到了稀有气体不掺入金属的结果，而在1995年用MgO容器实验中得到了稀有气体在金属和硅酸盐之间均匀分配的结果。我们认为在前一个实验中，有相当数量的碳溶解在金属中，影响了惰性气体的分配。MgO容器也与样品发生了反应，我们在SEM下观察到了这一点。今年我们进行了以氮为主要成分的分配实验，并改进了容器与样品不发生反应的装置。我们使用了来自Ichinomegata的二辉橄榄岩样品和带有MgO容器的铁。我们在MgO容器内放置Mo箔，在铁样品下放置MgO，以保护容器与样品的反应。我们人为地添加碳，最终可以将金属中的碳含量控制在我们预期的值。金属中的碳含量为0.5-重量%，并且随着碳含量的增加，氮气和稀有气体较少分配到金属中。因此，我们证实了碳对氮和惰性气体的分配有影响。铁陨石中的稀有气体也有，但以造气成分为主。

项目成果

Matsuda,J: "Noble gas study of a Philippinite with an unusually large bubble" Meteorities. 31. 273-277 (1996)

Matsuda,J：“对具有异常大气泡的菲律宾陨石的稀有气体研究”流星。

Matsuda. J.: "Noble gases in metal and shreibersite of the Acuna (IIIAB) iron meterite" Meteoritics. 31. 227-233 (1996)

松田。

Matsuda, J: "Noble gas study of a Philippinite with an unusually large bubble" Meteoritics. 31. 273-277 (1996)

Matsuda, J：“具有异常大气泡的菲律宾石的惰性气体研究”流星学。

橋爪 光: "窒素・炭素の親鉄性に関する実験的研究 -地球コア中の軽元素の定量をめざして-" 火山. (印刷中). (1996)

Hikaru Hashizume：“氮和碳亲铁性的实验研究 - 旨在测定地核中的轻元素 -”火山（1996 年出版）。

Matsuda, J: "Earth and space science of noble gas isotopes (in Japanese)" Radioisotopes. 45. 556-571 (1996)

Matsuda, J：“稀有气体同位素的地球与空间科学（日语）”放射性同位素。