Laboratory measurement of Poisson's patio of lower crustal molten rocks under high temperatures and pressures

2009 Fiscal Year Final Research Report

• Project/Area Number: 19340160
• 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: Yokohama National University
• Principal Investigator: ARIMA Makoto Yokohama National University, 大学院・環境情報研究院, 教授 (10184293)
• Co-Investigator(Kenkyū-buntansha): ISHIKAWA Masahiro 横浜国立大学, 大学院・環境情報研究院, 准教授 (70232270)
• Project Period (FY): 2007 – 2009
• Keywords: 弾性波速度 / ポアソン比 / 地殻 / 部分融解 / 高温高圧

Research Abstract

高温高圧条件下で岩石試料のVpとVsを精密に測定可能とする装置を開発し,地殻構成岩石の部分融解条件において弾性波速度測定実験を行った。部分融解が弾性波速度に及ぼす影響を実験的に明らかにした。珪酸塩メルトや超臨界フルイド流体相のポアソン比やVp/Vs比への影響評価を行い、東北日本の火山フロント地域の最上部マントルから火山直下まで連続して分布する低速度異常帯のポアソン比やVp/Vs比の特性から、火山帯直下の地殻構造と珪酸塩メルトの存在量を推定した。

Research Products

• [Journal Article] Simultaneous measurements of compressional wave and shear wave velocities, Poisson's ratio, Vp/Vs under deep crustal pressure and temperature conditions: Example of silicified pelitic schist from Ryoke belt, SW Japan. (2010)
  • Author(s): Matsumoto, Y., Ishikawa, M., Terabayashi, M., Arima, M.
  • Journal Title: the Island Arc vol.19 Pages: 30-39
  • Peer Reviewed
• [Journal Article] Pand S-wave velocities of the lowermost crustal rocks from the Kohistan arc: Implications for seismic Moho discontinuity attributed to abundant garnet. (2009)
  • Author(s): Kono, Y., Ishikawa, M., Harigane, Y., Michibayashi, K., Arima, M.
  • Journal Title: Tectonophysics 467 Pages: 44-54
  • Peer Reviewed
• [Journal Article] Elastic properties of high-grade metamorphosed igneous rocks from Enderby Land and eastern Dronning Maud Land, Antarctica: evidence for biotite-bearing mafic lower crust. (2008)
  • Author(s): Ishikawa, M., Shingai, E. Arima, M.
  • Journal Title: Geol. Soc., London, Special Publications 308 Pages: 83-194
  • Peer Reviewed
• [Journal Article] Simultaneous high P-T measurements of ultrasonic compressional and shear wave velocities in Ichino-megata mafic xenoliths: Their bearings on seismic velocity perturbations in lower crust of northeast Japan arc (2008)
  • Author(s): Nishimoto, S., M. Ishikawa, M. Arima, T. Yoshida, J. Nakajima
  • Journal Title: J. Geophys. Res. 113 Pages: B12212, doi:10. 1029/2008JB005587
  • Peer Reviewed
• [Journal Article] Temperature derivatives of elastic wave velocities in plagioclase (An51±1) above and below the order-disorder transition temperature. (2008)
  • Author(s): Kono, Y., Miyake, A., Ishikawa, M., Arima, M.
  • Journal Title: American Mineralogist 93 Pages: 558-564
  • Peer Reviewed
• [Presentation] Simultaneous ultrasonic velocities, porosity and pressure measurements at upper to lower crustal pressures using piston-cylinder apparatus: Influence of microcracks on the elastic properties of crustal rocks. (2009)
  • Author(s): S. Saito, M. Ishikawa M. Arima, Y. Tatsumi
  • Organizer: AGU Fall Meeting San Francisco
  • Year and Date: 2009-12-16
• [Presentation] 高温高圧条件下での多結晶石英の弾性波速度への水の影響 (2008)
  • Author(s): 松本有希
  • Organizer: 日本地質学会
  • Place of Presentation: 秋田
  • Year and Date: 2008-09-21
• [Presentation] 丹沢山地に産する角閃石ハンレイ岩の最大1. 0GPa 800℃における弾性波速度測定 (2008)
  • Author(s): 勝根郷
  • Organizer: 日本地球惑星科学連合
  • Place of Presentation: 幕張
  • Year and Date: 2008-05-26
• [Presentation] Elastic wave velocities and Poisson's ratios of amphibolite up to 900 ℃ at 1. 0 GPa: Effect of dehydration melting on Poisson's ratio of mid- to lower crustal rock (2007)
  • Author(s): Kojo, S.
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2007-12-12
• [Presentation] 丹沢角閃岩・緑色片岩の高温高圧条件下における弾性波速度とポアソン比 (2007)
  • Author(s): 小城志保子
  • Organizer: 日本地質学会
  • Place of Presentation: 札幌
  • Year and Date: 2007-09-10
• [Presentation] 丹沢山地に産する角閃石ハンレイ岩の高温高圧下における弾性波速度測定 (2007)
  • Author(s): 勝根郷
  • Organizer: 日本地質学会
  • Place of Presentation: 札幌
  • Year and Date: 2007-09-10
• [Book] Laboratory measurements of ultrasonic wave velocities of crustal rocks at high pressures and temperatures: Petrological structure of Izu-Bonin-Mariana arc crust. In Gupta & Dasgupta (eds). Springer-Verlag (Physics and Chemistry of the Earth's Interior. Crust, Mantle and Core) (2009)
  • Author(s): Ishikawa, M., Arima, M.
  • Total Pages: 143-152
• [Remarks]
  • URL: http://www.eis.ynu.ac.jp/natural_frame.htm