Quadruple sulfur isotopic compositions of seawater sulfate in the Archean

• Project/Area Number: 26610159
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Geology
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: SAITOH Masafumi 国立研究開発法人海洋研究開発機構, 次世代海洋資源調査技術研究開発プロジェクトチーム, 特任研究員 (80637588)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 四種硫黄同位体比 / 海水硫酸 / 太古代 / 炭酸塩置換態硫酸 / 硫黄同位体比

Outline of Final Research Achievements

Archean rocks record mass-independent isotopic fractionation of sulfur (S-MIF). To clarify the quadruple sulfur isotopic compositions of seawater sulfate in the Archean is important because seawater sulfate was likely a key element in the sulfur cycle in the ocean/atmosphere system. I tried to reconstruct the quadruple sulfur isotopic compositions of seawater sulfate in the Archean according to a new method of collecting carbonate-associated sulfate (CAS) in rock samples.

Research Products

• [Journal Article] Authigenic carbonate precipitation at the end-Guadalupian (Middle Permian) in China: Implications for the carbon cycle in ancient anoxic oceans (2015)
  • Author(s): Masafumi Saitoh, Yuichiro Ueno, Yukio Isozaki, Takazo Shibuya, Jianxin Yao, Zhansheng Ji, Katsumi Shozugawa, Motoyuki Matsuo, Naohiro Yoshida
  • Journal Title: Progress in Earth and Planetary Science Volume: 2 Issue: 1 Pages: 1-19
  • DOI: 10.1186/s40645-015-0073-2
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Simultaneous determinations of fluorine, chlorine, and sulfur in rock samples by ion chromatography combined with pyrohydrolysis (2015)
  • Author(s): Shimizu, K., Suzuki, K., Saitoh, M., Konno, U., Kawagucci, S., Ueno, Y.
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 49 Issue: 1 Pages: 113-124
  • DOI: 10.2343/geochemj.2.0338
  • NAID: 130004857883
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Isotopic evidence for water-column denitrification and sulfate reduction at the end-Guadalupian (Middle Permian) (2014)
  • Author(s): Masafumi Saitoh, Yuichiro Ueno, Yukio Isozaki, Manabu Nishizawa, Katsumi Shozugawa, Tetsuya Kawamura, Jianxin Yao, Zhansheng Ji, Ken Takai, Naohiro Yoshida, and Motoyuki Matsuo
  • Journal Title: Global and Planetary Change Volume: 123 Pages: 110-120
  • DOI: 10.1016/j.gloplacha.2014.10.014
  • Peer Reviewed / Open Access
• [Journal Article] Nitrogen isotope chemostratigraphy across the Permian-Triassic boundary at Chaotian, Sichuan, South China. (2014)
  • Author(s): Saitoh, M., Y. Ueno, Nishizawa, M., Isozaki, Y., Takai, K., Yao, J., Ji, Z.
  • Journal Title: Journal of Asian Earth Sciences Volume: 93 Pages: 113-128
  • DOI: 10.1016/j.jseaes.2014.06.026
  • Peer Reviewed
• [Presentation] ペルム紀中期末における自成炭酸塩の沈殿：古海洋の炭素循環への示唆 (2016)
  • Author(s): 斎藤誠史、上野雄一郎、磯崎行雄、渋谷岳造、小豆川勝見、松尾基之、吉田尚弘
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ（千葉県千葉市）
  • Year and Date: 2016-05-25
• [Presentation] ペルム紀中期末における超海洋パンサラッサの窒素循環変動 (2015)
  • Author(s): 斎藤誠史, 西澤学, 上野雄一郎, 小福田大輔, 磯崎行雄, 高井研
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2015-05-24
• [Presentation] Nitrogen isotope chemostratigraphy across the Permian-Triassic boundary at Chaotian, Sichuan, South China (2014)
  • Author(s): Saitoh, M., Ueno, Y., Nishizawa, M., Isozaki, Y., Takai, K., Yao, JX., Ji, ZS.
  • Organizer: The 2014 AGU Fall Meeting
  • Place of Presentation: San Francisco, US
  • Year and Date: 2014-12-19
• [Presentation] Nitrogen isotope chemostratigraphy across the Permian-Triassic boundary at Chaotian, Sichuan, South China (2014)
  • Author(s): Saitoh, M., Ueno, Y., Nishizawa, M., Isozaki, Y., Takai, K.
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: 神奈川県横浜市パシフィコ横浜
  • Year and Date: 2014-04-28