Oxygen isotope measurements on silica in marine sediments from the western North Pacific

2011 Fiscal Year Final Research Report

• Project/Area Number: 21510026
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: OKAZAKI Yusuke 独立行政法人海洋研究開発機構, 地球環境変動領域, 主任研究員 (80426288)
• Co-Investigator(Renkei-kenkyūsha): IJIRI Akira 独立行政法人海洋研究開発機構, 高知コア研究所, 研究員 (70374212) ; NAGASHIMA Kana 独立行政法人海洋研究開発機構, 地球環境変動領域, 研究員 (90426289)
• Research Collaborator: YAMANE Masako 東京大学, 大学院・理学系研究科地球惑星科学専攻, 大学院生
• Project Period (FY): 2009 – 2011
• Keywords: 珪酸塩酸素同位体比 / 古海洋環境指標

Research Abstract

In order to develop a novel quantitative proxy for paleoceanography, we measured oxygen isotopes on silica in marine sediments. Our analytical system is able to measure the oxygen isotopes of small amount of silica(～ 50μg) within analytical errors of+-0.2‰. We measured oxygen isotopes of diatom frustules, radiolarian skeletons and quartz in marine sediments to collect basic data for paleoceanography.

Research Products

• [Journal Article] Inter-laboratory comparison of oxygen isotopes from biogenic silica (2011)
  • Author(s): Chapligin, B., M. J. Leng, E. Webb, A. Alexandre, J. P. Dodd, A. Ijiri, A. Lucke, A. Shemesh, A. Abelmann, U. Herzschuh, F. J. Longstaffe, H. Meyer, R. Moschen, Y. Okazaki, N. H. Rees, Z. D. Sharp, H. J. Sloan, C. Sonzogni, G. E. A. Swann, F. Sylvestre, J
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 75 Pages: 7242-7256
  • Peer Reviewed
• [Presentation] 珪藻殻・放散虫骨格の酸素同位体比測定法開発 (2011)
  • Author(s): 岡崎裕典,井尻暁
  • Organizer: 日本古生物学会第160回例会
  • Place of Presentation: 高知大学
  • Year and Date: 2011-01-29
• [Presentation] 微少量生物源オパールの酸素同位体比分析法の開発と応用 (2011)
  • Author(s): 井尻暁,岡崎裕典,山根雅子
  • Organizer: 2010年度古海洋シンポジウム
  • Place of Presentation: 東京大学大気海洋研究所
  • Year and Date: 2011-01-06
• [Presentation] A simple method for oxygen isotope analysis on microgram quantities of biogenic opal (2010)
  • Author(s): Ijiri, A., Y. Okazaki, M. Yamane, T. Sakamoto, and N. Harada
  • Organizer: 10th International Conference on Paleoceanography
  • Place of Presentation: University of California, San Diego
  • Year and Date: 2010-09-02
• [Presentation] 微小量生物源オパールの酸素同位体比測定法の開発,新しい珪質プランクトン古海洋指標の開拓をめざして (2010)
  • Author(s): 井尻暁,岡崎裕典,山根雅子,坂本竜彦原田尚美
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2010-05-25
• [Presentation] Development of taxon-specific analysis on oxygen isotope of diatoms and radiolarians (2009)
  • Author(s): Okazaki, Y., A. Ijiri
  • Organizer: JSPS日仏二国間交流事業Radiolarian Biology based on Paleoceanography Workshop
  • Place of Presentation: Kyushu University
  • Year and Date: 2009-11-02