Melting phase relation and element partitioning in mantle materials under the lowermost mantle condition

2011 Fiscal Year Final Research Report

• Project/Area Number: 22740344
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: TATENO Shigehiko 東京工業大学, 大学院・理工学研究科, 特任助教 (30572903)
• Project Period (FY): 2010 – 2011
• Keywords: 高温高圧実験 / ダイヤモンドアンビルセル / 下部マントル

Research Abstract

Deep mantle melting has profound implications for chemical differentiation in early earth. Phase relation of peridodite was investigated to lowermost mantle condition. The results shows that liquidus phase changes from perovskite to post-perovskite at 110 GPa. Determined iron partitioning between perovskite/post-perovskite and partial melt indicates strong iron enrichment in melt, suggesting dense melt in the deep mantle conditions.

Research Products

• [Journal Article] Spin crossover and iron-rich silicate melt in the Earth's deep mantle (2011)
  • Author(s): Nomura, R., Ozawa, H., Tateno, S., Hernlund, J., Muto, S., Ishii, H., Hiraoka, N.
  • Journal Title: Nature Volume: 473 Pages: 199-202
  • Peer Reviewed
• [Journal Article] The structure of iron in Earth's inner core (2010)
  • Author(s): Tateno, S., Hirose, K., Ohishi, Y., Tatsumi, Y.
  • Journal Title: Science Volume: 330 Pages: 359-361
  • Peer Reviewed
• [Journal Article] Phase transition boundary between B1 and B8 structures of FeO up to 210 GPa (2010)
  • Author(s): Ozawa, H., Hirose, K., Tateno, S., Ohishi, Y.
  • Journal Title: Physics of the Earth and Planetary Interiors Volume: 179 Pages: 157-163
  • Peer Reviewed
• [Presentation] The structure of iron-nickel alloy in Earth's innercore (2012)
  • Author(s): 舘野繁彦
  • Organizer: Misasa-2012 and Geofluid-2
  • Place of Presentation: 三朝,鳥取
  • Year and Date: 2012-03-21
• [Presentation] The structure of iron alloy at the Earth's innercore (2011)
  • Author(s): 舘野繁彦
  • Organizer: 地球惑星科学連合大会
  • Place of Presentation: 幕張,千葉
  • Year and Date: 2011-05-26
• [Presentation] The crystal structure of iron at the innercore (2010)
  • Author(s): Tateno.S., Hirose, K., Ohishi, Y., Tatsumi, Y.
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2010-12-14
• [Presentation] 地球中心核における鉄の結晶構造 (2010)
  • Author(s): 舘野繁彦,廣瀬敬,大石泰生
  • Organizer: 高圧力学会・高圧討論会
  • Place of Presentation: 仙台
  • Year and Date: 2010-10-22
• [Presentation] HCP iron at the center of the Earth : A diamond-anvil cell study (2010)
  • Author(s): Tateno.S., Hirose, K., Sata, N., Ohishi, Y.
  • Organizer: The 20^<th> general meeting of the International Mineralogical Association
  • Place of Presentation: Budapest, Hungary(invited)
  • Year and Date: 2010-08-26