In-situ spectroscopic observation of magma and water fluid at high temperature and high pressure

2011 Fiscal Year Final Research Report

• Project/Area Number: 21340161
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Okayama University
• Principal Investigator: YAMASHITA Shigeru 岡山大学, 地球物質科学研究センター, 准教授 (30260665)
• Co-Investigator(Kenkyū-buntansha): KANZAKI Masami 岡山大学, 地球物質科学研究センター, 教授 (90234153)
• Project Period (FY): 2009 – 2011
• Keywords: マグマ・火成岩 / 高温高圧実験

Research Abstract

Speciation reaction equilibria in silicate melts and multi-component fluids were investigated in-situ at high temperature and high pressure using an externally heated diamond anvil cell. FTIR/Raman spectroscopy was used as a probe. The spectrometers were modified to have a common optical axis near and in the sample chamber of the cell, which renders quasi-simultaneous FTIR/Raman measurements. This, in combination with a newly established C^<13> diamond Raman pressure scale, provides a new development of in-situ spectroscopic study of magma-fluid systems.

Research Products

• [Journal Article] Speciation of reduced C-O-H volatiles in coexisting fluids and silicate melts determined in-situ to~ 1. 4 GPa and 800℃ (2010)
  • Author(s): Mysen B. O. and Yamashita, S.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 74 Pages: 4577-4588
  • Peer Reviewed
• [Journal Article] Nominally hydrous magmatism on the Moon (2010)
  • Author(s): McCubbin, F. M., Steele, A., Hauri, E. H., Nekvasil, H., Yamashita, S. and Hemley, R. J.
  • Journal Title: Proceedings of the National Academy of Sciences
  • DOI: doi:10.1073/pnas.1006677107
  • Peer Reviewed
• [Presentation] 炭素13ダイヤモンドの高温高圧その場ラマン観察:圧力センサーへの応用 (2011)
  • Author(s): 山下茂, Mysen, B. O.
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ(千葉県)
  • Year and Date: 2011-05-25
• [Presentation] Optical pressure sensors for DAC experiment : application in high-pressure studies (2011)
  • Author(s): Chertkova, N. and Yamashita, S.
  • Organizer: Japan Geoscience Union Meeting 2011
  • Place of Presentation: Makuhari(Chiba)
  • Year and Date: 2011-05-25
• [Presentation] Speciation and solubility of reduced C-O-H fluids in coexisting fluids and silicate melts determined in-situ to 1. 45 GPa and 800℃ (2010)
  • Author(s): Mysen, B. O., Yamashita, S. and Fogel, M.
  • Organizer: Goldschmidt Conference 2010
  • Place of Presentation: Knoxville, Tennessee(USA.)
  • Year and Date: 20100613-18
• [Presentation] Speciation of N-O-H Volatiles in Coexisting Fluids and Silicate Melts Determined In-situ at High Pressures and High Temperatures Under Reducing Conditions (2010)
  • Author(s): Yamashita, S. and Mysen, B. O.
  • Organizer: 2010 Western Pacific Geophysics Meeting
  • Place of Presentation: Taipei(Taiwan)
  • Year and Date: 2010-06-23
• [Presentation] 流体とケイ酸塩メルトの間のN-O-H化学種平衡-還元的条件における高温高圧その場観察- (2010)
  • Author(s): 山下茂, Mysen, B. O.
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 幕張メッセ(千葉県)
  • Year and Date: 2010-05-24
• [Remarks]
  • URL: http://www.misasa.okayama-u.ac.jp/%7eshigeru/shigeru.html