下部マントル最上部条件におけるカンラン岩と中央海嶺玄武岩の融解相関係とその部分溶融層の重力的安定性  [in Japanese] Melting Phase Relations of KLB-1 Peridotite and Mid-Ocean Ridge Basalt and Gravitational Stabilities of Partical Silicate Melts at the Uppermost Lower Mantle  [in Japanese]

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Author(s)

    • 野村 龍一 NOMURA Ryuichi
    • 愛媛大学地球深部ダイナミクス研究センター|京都大学白眉センター/大学院人間・環境研究科 Geodynamics Research Center, Ehime University|The Hakubi Center for Advanced Research/Graduate School of Human and Environmental Studies, Kyoto University
    • 中田 亮一 NAKADA Ryoichi
    • 海洋研究開発機構高知コア研究所 Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
    • 入舩 徹男 IRIFUNE Tetsuo
    • 愛媛大学地球深部ダイナミクス研究センター|東京工業大学地球生命研究所 Geodynamics Research Center, Ehime University|Earth-Life Science Institute, Tokyo Institute of Technology

Abstract

<p>Melting phase relations of mantle peridotite and basaltic oceanic crust are essentially important for understanding the chemical evolution of the Earth's mantle. Here we discuss melting phase relations of KLB-1 peridotite and mid-ocean ridge basalt (MORB) at the uppermost lower mantle based on our recent experimental results. The results show the narrow solidus-liquidus interval within 200 K and that MORB has lower solidus temperature than KLB-1 peridotite at 27 GPa. We also estimated the density of partial silicate melts at high pressures and found that partial melts of KLB-1 peridotite may be gravitationally unstable at the uppermost lower mantle conditions, whereas partial melts of MORB may be stable. This suggests that the distribution of partial melts at the deep Earth`s mantle is different between KLB-1 peridotite and MORB.</p>

Journal

  • The Review of High Pressure Science and Technology

    The Review of High Pressure Science and Technology 29(2), 75-85, 2019

    The Japan Society of High Pressure Science and Technology

Codes

  • NII Article ID (NAID)
    130007680184
  • NII NACSIS-CAT ID (NCID)
    AN10452913
  • Text Lang
    JPN
  • ISSN
    0917-639X
  • NDL Article ID
    029912717
  • NDL Call No.
    Z17-1589
  • Data Source
    NDL  J-STAGE 
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