Rheology of serpentinites clarified by high-PT deformation experiments

• Project/Area Number: 22340148
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geology
• Research Institution: The University of Tokyo
• Principal Investigator: SHIMIZU Ichiko 東京大学, 理学(系)研究科(研究院), 助教 (40211966)
• Co-Investigator(Kenkyū-buntansha): UEHARA Shinichi 東邦大学, 理学部, 准教授 (20378813)
• Project Period (FY): 2010-04-01 – 2013-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2010: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
• Keywords: 蛇紋岩 / マントルウェッジ / 高温高圧実験 / 沈み込み帯 / 摩擦 / 地震発生過程 / 脆性ー延性転移 / 脱水反応 / タルク / 間隙圧 / 有効応力 / 摩擦係数 / 変形実験 / 地震発生帯 / 高温高圧変形実験 / 摩擦強度 / 沈み込みスラブ / ウェッジマントル / 間隙水圧 / 沈み込みプレート境界 / 地震 / レオロジー / 岩石変形実験 / 脆性-延性転移

Research Abstract

For better understanding of seismogenic processes in subduction zones in the presence of H2O-fluids, we performed high-temperature and high-pressure deformation experiments of serpentinites. Serpentinites exhibited drastic changes in mechanical properties associated with dehydration of antigorite, a high-temperature phase of serpentine polymorphs. This suggests a close relationship between intra-slab earthquakes and dehydration of serpentinites. In friction experiments of simulated serpentine gouges, dehydration reaction was enhanced along the shear planes. In the friction experiments with varying confining and pore pressures (up to 380 MPa), frictional properties deviated from those expected from the law of effective stress. These results give an insight for the strength of subduction zone megathrusts.

Research Products

• [Journal Article] Evolution of permeability and microstructure of shear zone in Neogene siliceous mudstone (2014)
  • Author(s): Uehara S., and Takahashi M.
  • Journal Title: Journal of Structural Geology Volume: 60 Pages: 46-54
  • Peer Reviewed
• [Journal Article] Imaging of internal stress around a mineral inclusion in a sapphire crystal: Application of micro-Raman and photoluminescence spectroscopy (2013)
  • Author(s): Noguchi, N., Abduriyim, A., Shimizu, I., Kamegata, N., Odake, S. and Kagi, H.
  • Journal Title: Journal of Raman Spectroscopy Volume: 44 Issue: 1 Pages: 147-154
  • DOI: 10.1002/jrs.4161
  • Peer Reviewed
• [Journal Article] How rock mechanical properties affect fault permeability in Neogene mudstone? (2013)
  • Author(s): Uehara S., Takahashi M.
  • Journal Title: Energy Procedia Volume: 37 Pages: 5588-5595
• [Journal Article] Can surface samples be used to infer underground permeability structure? A test case for a Neogene sedimentary basin in Horonobe (2012)
  • Author(s): Uehara S., Shimamoto T., Okazaki K., Funaki H., Kurikami H., Niizato T., and Ohnishi Y.
  • Journal Title: Japan. International Journal of Rock Mechanics and Mining Sciences Volume: 56 Pages: 1-14
  • Peer Reviewed
• [Journal Article] Amorphization of quartz by friction: Implication to silica-gellubrication of fault surfaces (2012)
  • Author(s): Nakamura, Y., Muto, J., Nagahama, H., Shimizu, I., Miura, T., Arakawa, I..
  • Journal Title: Geophysical Research Letter Volume: 39 Issue: 21 Pages: 53228-53228
  • DOI: 10.1029/2012gl053228
  • Peer Reviewed
• [Journal Article] Surface Fault Ruptures and Slip Distributions of the Mw 7 11 April 2011 Hamadoori, Fukushima, northeast Japan (2012)
  • Author(s): Mizoguchi K., Uehara S., and Ueta K.
  • Journal Title: Earthquake. Bulletin of the Seismological Society of America Volume: 102 Pages: 1949-1956
  • Peer Reviewed
• [Journal Article] Major element distribution in Archean banded iron formation (BIF) : Influence of metamorphic differentiation (2012)
  • Author(s): Katsuta N., Shimizu, I., Helmstaedt, H., Takano, M., Kawasaki, S.Kumazawa, M.
  • Journal Title: J.Metamorph.Geol. Volume: (Article first published online:9MAR2012) Issue: 5 Pages: 1-16
  • DOI: 10.1111/j.1525-1314.2012.00975.x
  • Peer Reviewed
• [Journal Article] Steady-state grain size in dynamic recrystallization of minerals, In : "Recrystallization'' (2012)
  • Author(s): Shimizu I.
  • Journal Title: K. Sztwiertnia (ed.), InTech Pages: 371-386
  • URL: http://www.intechopen.com/articles/show/title/steady-state-grain-size-in-dynamic-recrystallization-of-minerals
• [Journal Article] Steady-state grain size in dynamic recrystallization of minerals (2012)
  • Author(s): Shimizu, I.
  • Journal Title: Recrystallization(edited by Krzysztof Sztwiertnia)(InTech) Pages: 371-386
• [Journal Article] On the transient response of serpentine (antigorite) gouge to stepwise changes in slip velocity under high-temperature conditions (2011)
  • Author(s): Takahashi, M., Uehara, S.-I., Mizoguchi, K., Shimizu, I., Okazaki, K., Masuda, K.
  • Journal Title: Journal of Geophysical Research Volume: 116 Issue: B10
  • DOI: 10.1029/2010jb008062
  • NAID: 120005300477
  • Peer Reviewed
• [Journal Article] Erratum to"Theories and applicability of grain size piezometers : The role of dynamic recrystallization mechanisms"[J Struct Geol 30 (2008) 899-917] (2011)
  • Author(s): Shimizu I.
  • Journal Title: Journal of Structural Geology Volume: 33 Pages: 1136-1137
  • Peer Reviewed
• [Journal Article] 地下深部における新第三紀泥質軟岩中の亀裂の透水特性～室内試験による推定～ (2011)
  • Author(s): 上原真一,嶋本利彦,松本拓真,新里忠史,岡崎啓史,高橋美紀
  • Journal Title: Journal of MMIJ Volume: 127 Pages: 139-144
  • NAID: 10027793393
  • Peer Reviewed
• [Journal Article] Erratum to "Theories and applicability of grain size piezometers : The role of dynamic recrystallization mechanisms" [J Struct Geol 30 (2008) 899-917] (2011)
  • Author(s): I.Shimizu
  • Journal Title: Journal of Structural Geology Volume: 33(印刷中)(掲載確定)
  • Peer Reviewed
• [Journal Article] 沈み込みスラブの二重震発面と蛇紋岩の脱水不安定性 (2010)
  • Author(s): 清水以知子
  • Journal Title: 月刊地球 Volume: 32 Pages: 162-166
• [Journal Article] 深部H2O流体の連結性と界面の熱力学 (2010)
  • Author(s): 清水以知子
  • Journal Title: 岩石鉱物科学 Volume: 39 Pages: 208-219
  • Peer Reviewed
• [Journal Article] 深部H_2O流体の連結性と界面の熱力学 (2010)
  • Author(s): 清水以知子
  • Journal Title: 岩石鉱物科学 Volume: 39 Pages: 208-219
  • NAID: 10027418557
  • Peer Reviewed
• [Journal Article] Rheological profile across the NE Japan interplate megathrust in the source region of the 2011 Mw9.0 Tohoku-oki earthquake. Earth
  • Author(s): Shimizu I
  • Journal Title: Planets and Space Volume: (in press)
  • Peer Reviewed
• [Presentation] Effect of pore pore pressure on frictional properties of talc and serpentinite under high normal stress (2014)
  • Author(s): Uehara S., I. Shimizu, K. Okazaki, and M. Nakatani
  • Organizer: Geofluid 3
  • Place of Presentation: Tokyo Inst. Technology, Tokyo
  • Year and Date: 2014-02-28
• [Presentation] Rheological structure of the NE Japan subduction zone megathrust across the source region of the 2011 Tohoku-oki earthquake (Mw 9.0) (2014)
  • Author(s): Shimizu I.
  • Organizer: Geofluid 3
  • Place of Presentation: Tokyo Inst. Technology, Tokyo
• [Presentation] Rheological profile of the Tohoku-oki interplate megathrust across the source region of the M9 great earthquake (2013)
  • Author(s): Shimizu I.
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, U.S.A.
  • Year and Date: 2013-12-14
• [Presentation] 蛇紋岩・タルクの摩擦特性にたいする間隙圧の影響 (2013)
  • Author(s): 上原真一,清水以知子,岡崎啓史,中谷正生
  • Organizer: 日本地質学会
  • Place of Presentation: 東北大学,宮城
  • Year and Date: 2013-09-14
• [Presentation] 東北沖プレート境界逆断層における2種類のアスペリティ (2013)
  • Author(s): 清水以知子
  • Organizer: 地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ,千葉
  • Year and Date: 2013-05-23
• [Presentation] タルクおよび蛇紋岩の摩擦特性における間隙水圧と応力履歴の影響 (2013)
  • Author(s): 上原真一,清水以知子,岡崎啓史,中谷正生
  • Organizer: 地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ,千葉
  • Year and Date: 2013-05-23
• [Presentation] Oxidation of slab mantle due to dehydration of serpentinite (2013)
  • Author(s): Shimizu I., Katsuta N., and Murakami T.
  • Organizer: Ann. Meeting of Japan Geophysical Union
  • Place of Presentation: Makuhari, Chiba
  • Year and Date: 2013-05-23
• [Presentation] 東北沖沈み込みプレート境界断層における地殻応力問題:間隙圧の効果 (2012)
  • Author(s): 清水以知子,上原真一
  • Organizer: 日本地質学会
  • Place of Presentation: 大阪府大,大阪
  • Year and Date: 2012-09-15
• [Presentation] 東北日本M9地震の震源断層強度 (2012)
  • Author(s): 清水以知子
  • Organizer: 日本地球惑星科学連合2012年大会
  • Place of Presentation: 幕張メッセ,千葉
  • Year and Date: 2012-05-25
• [Presentation] 東北沖プレート境界逆断層における脆性-延性転移 (2012)
  • Author(s): 清水以知子
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ,千葉
  • Year and Date: 2012-05-22
• [Presentation] Dehydration softening of serpentinite and its roles in the intermediate-depth eartuquakes (2012)
  • Author(s): Shimizu I., Watanabe Y., Michibayashi K., Takahashi, M. Uehara, S., Katsuta, N.,
  • Organizer: First International Symposium on Geofluids, "Geo fluid Processes in Subducation Zones and Mantle Dynamics
  • Place of Presentation: Tokyo Institute of Technology, Tokyo, Japan(招待講演)
  • Year and Date: 2012-03-17
• [Presentation] アンチゴライトガウジの変形構造と地震発生過程についての実験的研究 (2011)
  • Author(s): 高橋美紀,清水以知子
  • Organizer: 地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ,千葉
  • Year and Date: 2011-05-24
• [Presentation] Geofluid Processes in Subducation Zones and Mantle Dynamics (2011)
  • Author(s): Shimizu I., Watanabe Y., Michibayashi K., Takahashi M., Uehara S., and Katsuta N.
  • Organizer: Dehydration softening of serpentinite and its roles in the intermediate-depth eartuquakes. First International Symposium on Geofluids
  • Place of Presentation: Tokyo Institute of Technology, Tokyo, Japan
  • Year and Date: 2011-03-17
• [Presentation] 2010, Dehydration softening of serpentinite and its roles in the intermediate-depth earthquakes (2010)
  • Author(s): Shimizu I., Watanabe Y., and Michibayashi K.
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, U.S.A.
  • Year and Date: 2010-12-15
• [Presentation] Dehydration softening of serpentinite and its roles in the intermediate-depth earthquakes (2010)
  • Author(s): Shimizu I., Watanabe Y., Michibayashi K.
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: モスコーンコンベンジュンセンターサンフランシスコ アメリカ合衆国
  • Year and Date: 2010-12-15
• [Presentation] Rheological structure of the NE Japan subduction zone megathrust across the source region of the 2011 Tohoku-oki earthquake (Mw 9.0)
  • Author(s): Shimizu, I.
  • Organizer: Geofluids 3
  • Place of Presentation: Tokyo Inst. Technology (Tokyo)
• [Presentation] Effect of pore pore pressure on frictional properties of talc and serpentinite under high normal stress
  • Author(s): Uehara, S., Shimizu, I., Okazaki, K. and Nakatani, M.
  • Organizer: Geofluids 3
  • Place of Presentation: Tokyo Inst. Technology (Tokyo)
• [Presentation] Rheological profile of the Tohoku-oki interplate megathrust across the source region of the M9 great earthquake
  • Author(s): Shimizu, I.
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco (USA)
• [Presentation] 蛇紋岩・タルクの摩擦特性にたいする間隙圧の影響
  • Author(s): 上原真一・清水 以知子・岡崎啓史・中谷正生
  • Organizer: 日本地質学会
  • Place of Presentation: 東北大学（仙台）
• [Presentation] Oxidation of slab mantle due to dehydration of serpentinite
  • Author(s): Shimizu, I., Katsuta, N., and Murakami, T.
  • Organizer: Ann. Meeting of Japan Geophysical Union
  • Place of Presentation: Makuhari Messe (Chiba)
• [Remarks] 清水 以知子,東北日本M9震源断層のレオロジーモデル.地殻流体Newsletter, vol 13 & 14, p. 7., 2014.
  • URL: http://www.geofluids.titech.ac.jp
• [Remarks] 清水 以知子,上原 真一,沈み込み帯の破壊摩擦過程に対する間隙圧の影響.地殻流体Newsletter, vol 11 & 12, p. 7, 2013.
  • URL: http://www.geofluids.titech.ac.jp