Highly siderophile element behaviors in large volcanic activities

2013 Fiscal Year Final Research Report

• Project/Area Number: 23740403
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Geochemistry/Astrochemistry
• Research Institution: The University of Tokyo
• Principal Investigator: ISHIKAWA Akira 東京大学, 総合文化研究科, 助教 (20524507)
• Research Collaborator: SUZUKI Katsuhiko 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 主任研究員 (70251329) ; SENDA Ryoko 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 技術研究副主任 (50377991) ; TEJADA Maria L G 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 研究員 (40598778) ; SANO Takashi 独立行政法人国立科学博物館, 地学研究部, 研究主幹 (40329579) ; DALE Christopher ダラム大学, 地球科学科(イギリス), Lecturer
• Project Period (FY): 2011 – 2012
• Keywords: 強親鉄性元素 / オスミウム同位体比 / 玄武岩 / 大規模火成活動 / オントンジャワ海台 / 巨大火成岩岩石区

Research Abstract

In order to understand the mechanism of material transportation and elemental behaviors associated with large volcanic activities, we obtained highly siderophile element concentrations and 187Os/188Os isotopic data of wide variety of ocean island and oceanic plateau basalts. For this purpose, we developed a new analytical protocol which is suitable for small amounts of low-level samples. The results demonstrated that large volcanic activities leading to the formation of large igneous provinces effectively transport highly siderophile elements from mantle budget to crustal levels. On the other hand, current dataset suggests that degassing and alteration processes in normal conditions cannot be responsible for the significant release of highly siderophile elements into the ocean-atmospheric reservoir.

Research Products

• [Journal Article] 試薬および環境中のオスミウムブランク低減についての試み : ブランク測定方法と起源の解明 (2014)
  • Author(s): 仙田 量子、石川 晃
  • Journal Title: JAMSTEC Report of Research and Development Volume: 18 Pages: 17-28
  • Peer Reviewed
• [Journal Article] Cryptic lower crustal signature in the source of the Ontong Java Plateau revealed by Os and Hf isotopes (2013)
  • Author(s): Tejada, M. L. G., Suzuki, K., Hanyu, T., Mahoney, J. J., Ishikawa, A., Tatsumi, Y., Chang, Q., Nakai, S
  • Journal Title: Earth and Planetary Science Letters Pages: 377-378, 84-96
  • Peer Reviewed
• [Journal Article] マントル中の強親鉄性元素にまつわる3つの謎 (2012)
  • Author(s): 石川 晃
  • Journal Title: 岩石鉱物科学 Volume: 41 Pages: 203-211
  • Peer Reviewed
• [Journal Article] 海洋底かんらん岩のオスミウム同位体組成 (2012)
  • Author(s): 仙田 量子、石川 晃、鈴木 勝彦
  • Journal Title: 岩石鉱物科学 Volume: 41 Pages: 211-221
  • Peer Reviewed
• [Journal Article] Variety and origin of magmas on Shatsky Rise, northwest Pacific Ocean (2012)
  • Author(s): Sano, T., Shimizu, K., Ishikawa, A., Senda, R., Chang, Q., Kimura, J. -I., Widdowson, M., Sager, W. W
  • Journal Title: Geochemistry Geophysics Geosystems Volume: 13 Pages: Q08010
  • DOI: 10.1029/2012GC004235
  • Peer Reviewed
• [Journal Article] Ontong-Java Plateau, the world's largest oceanic plateau, has been subducted 50%, with the remaining 50% on the surface, and with a < 1% accretion on the hanging wall of the Solomon Islands (2011)
  • Author(s): Maruyama, S., Utsunomiya, A., Ishikawa, A
  • Journal Title: Journal of Geography (地学雑誌) Volume: 120 Pages: 1035-1044
  • Peer Reviewed
• [Journal Article] Spectacular mantle xenoliths derived from"oceanic kimberlite", Malaita, Solomon Islands a unique window into the Earth's deep interior (2011)
  • Author(s): Ishikawa, A
  • Journal Title: Journal of Geography Volume: 120 Pages: 1026-1034
  • Peer Reviewed
• [Presentation] Highly siderophile element mobility during oceanic LIP emplacements : implications from subaerial and submarine basalts on Shatsky Rise (2014)
  • Author(s): Ishikawa, A., Sano, T., Senda, R., Suzuki, K
  • Organizer: Goldschmidt conference 2014
  • Place of Presentation: アメリカ・サクラメント
  • Year and Date: 20140625-30
• [Presentation] Re-evaluation of digestion methods for accurate Re-Os isotope and highly siderophile element analyses (2013)
  • Author(s): Ishikawa, A., Senda, R., Suzuki, K., Dale, C. W
  • Organizer: Goldschmidt conference 2013
  • Place of Presentation: イタリア・フローレンス
  • Year and Date: 20130825-30
• [Presentation] The possible source mantle and magma genesis of basalts from Pitcairn island : implication from highly siderophile elements and Os isotope ratios (2013)
  • Author(s): Senda, R., Hanyu, T., Ishikawa, A., Kawabata, K., Takahashi, T., Suzuki, K
  • Organizer: Goldschmidt conference 2013
  • Place of Presentation: イタリア・フローレンス
  • Year and Date: 20130825-30
• [Presentation] Re-Os isotope and platinum group element composition of Louisville seamounts chain (2013)
  • Author(s): Tejada, M., Hanyu, T., Ishikawa, A., Senda, R., Suzuki, K
  • Organizer: Pacific Ocean. Goldschmidt conference 2013
  • Place of Presentation: イタリア・フローレンス
  • Year and Date: 20130825-30
• [Presentation] 標準岩石試料の強親鉄性元素濃度およびオスミウム同位体比の再評価 (2013)
  • Author(s): 石川 晃、仙田 量子、鈴木 勝彦
  • Organizer: 日本地球惑星科学連合2013年度連合大会
  • Place of Presentation: 日本・幕張メッセ
  • Year and Date: 20130519-24
• [Presentation] Highly siderophile element behavior during oceanic LIP emplacement (2012)
  • Author(s): Ishikawa, A., Sano, T., Senda, R., Suzuki, K
  • Organizer: 日本地球惑星科学連合2012年度連合大会
  • Place of Presentation: 日本・幕張メッセ
  • Year and Date: 20120520-25
• [Presentation] Ontong Java Plateau lithosphere and its relation to craton formation (2012)
  • Author(s): Ishikawa, A., Dale, C. W., Pearson, D. G
  • Organizer: 日本地球惑星科学連合2012年度連合大会
  • Place of Presentation: 日本・幕張メッセ
  • Year and Date: 20120520-25
• [Presentation] 玄武岩質試料に対する強親鉄性元素定量法の再検討 (2011)
  • Author(s): 石川 晃、仙田 量子、鈴木 勝彦
  • Organizer: 2011年日本地球化学会第58会大会
  • Place of Presentation: 日本・札幌
  • Year and Date: 2011-09-16