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Chemical heterogeneity in solid driven by steep temperature gradient under pressure

Research Project

Project/Area Number 23654188
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionOsaka University

Principal Investigator

KONDO Tadashi  大阪大学, 大学院・理学研究科, 教授 (20252223)

Co-Investigator(Kenkyū-buntansha) SAKAIYA Tatsuhiro  大阪大学, 大学院・理学研究科, 助教 (60452421)
Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsソーレー効果 / 鉄 / かんらん石 / レーザー加熱ダイヤモンドアンビルセル / 元素拡散 / 超高圧 / ダイヤモンドアンビルセル / レーザー加熱 / 相転移 / ソーレー拡散 / マントル鉱物
Research Abstract

Soret diffusion in olivine was investigated using laser-heated diamond anvil cell at 10-30 GPa with a steep temperature gradient. The samples were quenched to ambient condition after nominal heating duration to conduct chemical analysis of the thin section. Iron diffusion from high temperature region to low temperature one was confirmed when the temperature gradient is 50K/micron. The coefficient of Soret diffusion was roughly estimated to be 5*10-3K-1. A few minutes duration was enough to induce elemental differentiation when sample melts.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (6 results)

All 2013 2012

All Presentation (6 results)

  • [Presentation] 温度勾配場におけるマントルオリビンの化学的不均質形成2013

    • Author(s)
      安居俊紀, 近藤忠
    • Organizer
      日本地球惑星科学連合2013 年大会
    • Place of Presentation
      幕張メッセ国際会議場,千葉
    • Related Report
      2012 Final Research Report
  • [Presentation] Chemical heterogeneity in mantle olivine by temperature gradient2013

    • Author(s)
      安居俊紀
    • Organizer
      日本地球惑星科学連合2013年大会
    • Place of Presentation
      千葉・幕張メッセ
    • Related Report
      2012 Annual Research Report
  • [Presentation] 急激な温度勾配場における高圧試料中の元素拡散2012

    • Author(s)
      安居俊紀, 近藤忠
    • Organizer
      第53回高圧討論会
    • Place of Presentation
      大阪
    • Related Report
      2012 Final Research Report
  • [Presentation] 急激な温度勾配場におけるマントルオリビン中の鉄拡散2012

    • Author(s)
      安居俊紀, 近藤忠
    • Organizer
      日本地球惑星科学連合2012 年大会
    • Place of Presentation
      幕張メッセ国際会議場,千葉
    • Related Report
      2012 Final Research Report
  • [Presentation] 急激な温度勾配場における高圧試料中の元素拡散2012

    • Author(s)
      安居俊紀
    • Organizer
      第53回高圧討論会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Related Report
      2012 Annual Research Report
  • [Presentation] Iron diffusion in mantle olivine under steep temperature gradient2012

    • Author(s)
      安居俊紀
    • Organizer
      日本地球惑星科学連合2012年大会
    • Place of Presentation
      千葉・幕張メッセ
    • Related Report
      2012 Annual Research Report

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Published: 2011-08-05   Modified: 2019-07-29  

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