Studies on magmatic fluids related to arc-arc collision by using high-energy ion beam

2007 Fiscal Year Final Research Report Summary

• Project/Area Number: 17540452
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: University of Tsukuba
• Principal Investigator: KUROSAWA Masanori University of Tsukuba, Graduate School of Life and Environmental Sciences, Assistant professor (50272141)
• Co-Investigator(Kenkyū-buntansha): ANMA Ryo University of Tsukuba, Graduate School of Life and Environmental Sciences, Assistant professor (70311595) ; KOMATSUBARA Tetsuro University of Tsukuba, Graduate School of pure and Applied Sciences, Assistant professor (10195852) ; SASA Kimikazu University of Tsukuba, Graduate School of pure and Applied Sciences, Assistant professor (20312796)
• Project Period (FY): 2005 – 2007
• Keywords: hydrogen / magma / melt inclusion / ion beam / water / ERDA / lzu / Fossa magna

Research Abstract

Chromian diopside megacrysts, a few cm in size, are often found in basalt and basaltic andesite dykes and tholeiitic basalt at a Miocene collision zone of the Izu-Bonin arc, central Japan. The diopside megacrysts occur from only dykes and lavas in sea-floor volcanic rocks of the Miocene age (6 Ma to 16 Ma) and are thought to be an early crystallization product of tholeiitic basalt at a shallower upper-mantle region, taking into account the low sodium and aluminum contents. The diopsides are also characterized by a large amount of melt inclusions. Thus, we have determined hydrogen contents of melt inclusions in the diopside megacrysts by a newly developed analytical method, Elastic Recoil Coincidence Spectroscopy (ERCS), to examine a water condition in the shallower mantle related to a young Arc-Arc collision zone. The megacryst samples were collected from basalt and basaltic andesite dykes and basaltic pillow lavas in the Tanzawa, the Misaka, and the Kushigata-yama mountains and the Fuji-gawa area at the collision zone of the Izu-Bonin arc. Water contents of the melt inclusions were 3 to 4 wt. %H2O. The contents are higher than the previous values of melt inclusions and quenched glasses in basalts and basaltic andesites from arcs and back-arc basins, indicating a large supply of water into the shallower upper-mantle region at the formation of the megacrysts. A restricted occurrence of the megacrysts from the 6 Ma to 16 Ma volcanic rocks also indicates the water supply event at that time. The water supply could be related to the collision of the Izu-Bonin arc.

Research Products

• [Journal Article] Quantitative PIXE analyses of fluid inclusions in quartz by using 1. 92 MeV proton beam (2007)
  • Author(s): Kurosawa, M., Ishii, S. and Sasa, K.
  • Journal Title: Annual Report, Tandem Accelerator Center, University of Tsukuba 76 Pages: 41-42
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] 26AI and 36CIAMS system at the University of Tsukuba : a progress report (2007)
  • Author(s): Sasa, K., Nagashima, Y., Takahashi, T., Seki, R., Tosaki, Y., et. al.
  • Journal Title: Nuclear Instruments and Methods in Physics Research B259 Pages: 41-46
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Paleocurrent patterns of the sedimentary sequence of the Taitao ophioliteconstrained by anisotropy of magnetic susceptibility and paleomagnetic analyses (2007)
  • Author(s): Veloso, E. E., Anma, R., Ota, T., Komiya, T., Kagashima, S. and Yamazaki, T.
  • Journal Title: Sedimentary Geology 201 Pages: 446-460
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Progressive metamorphism of the Taitao ophiolite ; Evidence for axial and off-axis hydrothermal alterations (2007)
  • Author(s): Shibuya, T., Komiya, T., Anma, R., Ota, T., Omori, S., Kon, Y., Yamamoto, S. and Maruyama, S.
  • Journal Title: Lithos 98 Pages: 233-260
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Studies on evaluation methods of geological environments for crystalline rocks (2006)
  • Author(s): Kurosawa, M.
  • Journal Title: Report of Safety Research Project for Nuclear Waste Disposal 2001-2005 Pages: 68-73
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Trace-element analysis of fused whole-rock glasses by laser ablation-ICP-MS and PIXE (2006)
  • Author(s): Kurosawa, M., Shima, K., Ishii, S. and Sasa, K.
  • Journal Title: Geostandards and Geoanalytical Research 30 Pages: 17-30
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Rare-Element Mineralogy of the Uzumine Granitic Pegmatite, Abukuma Mountains, Northeastern Japan (2006)
  • Author(s): Nakajima, T. and Kurosawa, M.
  • Journal Title: Canadian Mineralogist 44 Pages: 31-44
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Development of ERCS hydrogen analysis for melt inclusions in erupted magmatic samples (2006)
  • Author(s): Komatsubara, T., Sasa, K., Okumoto, K., Ishii, S., Yamato, Y., Satou, K, Furuno, K. and Kurosawa, M.
  • Journal Title: Nuclear Instruments and Methods in Physics Research B251 Pages: 237-245
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] New detection system of ERCS hydrogen analysis (2006)
  • Author(s): Komatsubara, T., Sasa, K, Kurosawa, M., Ishii, S., Yamato, Y., Kawamata, T., Iwamura, K, Okaguchi, H., et. al.
  • Journal Title: Annual Report, Tandem Accelerator Center, University of Tsukuba 75 Pages: 51-53
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Zircon sensitive high mass-resolution ion microprobe U-Pb and fission-track ages for gabbros and sheeted dykes of the Taitao ophiolite, Southern Chile, and their tectonic implications (2006)
  • Author(s): Anma, R., Armstrong, R., Danhara, T., Orihashi, Y. and Iwano, H.
  • Journal Title: Island Arc 15 Pages: 130-042
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Geologic reconnaissance of Lautaro volcano, Chilean Patagonia (2006)
  • Author(s): Motoki, A., Orihashi, Y., Naranjo, J. A., Hirata, D., Skvarca, P. and Anma, R.
  • Journal Title: Revista Geologica de Chile 33 Pages: 177-187
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Prospects for the ocean-floor geothermochronology : U-beaing minerals, ages and geothermal gradients of Deep Sea Drilling Holes and ophiolites (2006)
  • Author(s): Anma, R. and the IODP Exp. 309 & 312 Shipboard Scientific Parties
  • Journal Title: Fission Track Newsletter 19 Pages: 1-8
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Hydrogen analysis of melt inclusions in chromian-diopside magacrysts from basalt and basaltic andesite dykes intruded in a collision zone of the Izu-Boninarc (2005)
  • Author(s): Kurosawa, M., Miyagawa, K., Komatsubara, T., Satou, K., Sasa, K., Ishii, S.,Yamato, Y., Kobayashi, Y. and Anma, R.
  • Journal Title: Monthly Earth Science 27 Pages: 519-524
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Trace element determination of silicate rock reference material JB-1 a by using particle-induced X-ray emission (2005)
  • Author(s): Kurosawa, M., Shima, K. Ishii, S., Sasa, K. and Komatsubara, K.
  • Journal Title: Annual Report, Tandem Accelerator Center, University of Tsukuba 73 Pages: 48-49
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Hydrogen analysis for geoscience by nuclear microprobe (2005)
  • Author(s): Komatsubara, T., Sasa, K., Ishii, S., Yamato, Y., Miyakawa, K., Satou, K. and Kurosawa, M.
  • Journal Title: In Recent Achievements and Perspectives in Nuclear Physics, World Scientific, New Jersey, U. S. A. Pages: 429-437
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Tectonic rotations during the Chile ridge collision and obduction of the Taitao ophiolite(Southern Chile) (2005)
  • Author(s): Veloso-Espinosa, E. A., Anma, R. and Yamazaki, T.
  • Journal Title: Island Arc 14 Pages: 599-615
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Accretionary complex origin of the Mafic-Ultramafic bodies of the Sanbagawa belt, central Shikoku, Japan (2005)
  • Author(s): Terabayashi, M., Okamoto, K., Yamamoto, H., Kaneko, Y., Ota, T., Maruyama, S., Katayama, I., Komiya, T., Ishikawa, A., Anma, et. al.
  • Journal Title: International Geology Review 47 Pages: 1058-1073
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Chemical analyses of Earth' s fluids by using PIXE (2008)
  • Author(s): M. Kurosawa
  • Organizer: UTTAC Seminar : New Aspects of Interdisciplinary Applications of Multi-Tandem Electrostatic Accelerator
  • Place of Presentation: Tsukuba, Ibaraki, Japan
  • Year and Date: 2008-03-16
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Micro-PIXE analyses of trace elements in single fluid inclusions using a tandetron accelerator (2007)
  • Author(s): M. Kurosawa., Sasa, K. and ishii, S.
  • Organizer: Annual Meetings of Japan Association of Mineralogical Sciences
  • Place of Presentation: Bunkyo, Tokyo, Japan
  • Year and Date: 2007-09-23
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Studies on granite-generated fluids to estimate groundwater chemistries.(invited) (2007)
  • Author(s): M. Kurosawa
  • Organizer: The Briefing Session on Advanced Basic Engineering Research, Japan Nuclear Cycle Development Institute
  • Place of Presentation: Naka, Ibaraki, Japan
  • Year and Date: 2007-07-29
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Granite-generated hydrothermal fluids : implications from chemistries of fluid inclusions (2007)
  • Author(s): M. Kurosawa
  • Organizer: Seminar on Continental Crusts, AIST
  • Place of Presentation: Tsukuba, Ibaraki, Japan
  • Year and Date: 2007-02-25
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Fluid inclusion compositions of the Kofu granite body, central Japan : significance for chemistries of deep groundwater in the granite body (2006)
  • Author(s): Kurosawa, M., Shimano, S., Ishii, S. and Sasa, K.
  • Organizer: The 19th general Meeting of International Mineralogical Association
  • Place of Presentation: Kobe, Hyogo, Japan
  • Year and Date: 2006-07-24
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] A micro-PIXE system for geological applications at Tsukuba (2006)
  • Author(s): Sasa, K., Ishii, S., Yamato, Y., and Kurosawa, M.
  • Organizer: The 19th Meetings of Tandem Accelerator and its Applications
  • Place of Presentation: Takasaki, Gunma, Japan
  • Year and Date: 2006-07-02
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Elastic Recoil Coincidence Spectroscopy analysis of hydrogen in mineral. samples. (2006)
  • Author(s): Komatsubara, T., Sasa, K, Ishii, S., Yamato, Y., and Kurosawa, M.
  • Organizer: The 19th Meetings of Tandem Accelerator and its Applications
  • Place of Presentation: Takasaki, Gunma, Japan
  • Year and Date: 2006-07-02
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Trace element analyses of granite-related fluids by PIXE.(invited) (2006)
  • Author(s): M. Kurosawa
  • Organizer: UTTAC Seminar : New Aspects of Interdisciplinary Applications of Multi-Tandem Electrostatic Accelerator
  • Place of Presentation: Tsukuba, Ibaraki, Japan
  • Year and Date: 2006-03-16
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Safety research of nuclear waste disposal in University of Tsukuba.(invited) (2006)
  • Author(s): M. Kurosawa
  • Organizer: The 5th Briefing Session on Safety Research of Nuclear Waste Disposal, Atomic Agency Commission
  • Place of Presentation: Shinagawa, Tokyo, Japan
  • Year and Date: 2006-03-03
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] A new PIXE instrument for geological applications at Tsukuba (2005)
  • Author(s): Sasa, K., Ishii, S., Yamato, Y., and Kurosawa, M.
  • Organizer: The 22th PIXE symposium
  • Place of Presentation: Tsuruga, Fukul, Japan
  • Year and Date: 2005-11-28
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Water contents of glass inclusions in chromian-diopside magacrysts from basalt -andesite dykes intruded in the southern Fossa Magna region (2005)
  • Author(s): Kurosawa, M., Miyagawa, K, Komatsubara, T., Satou, K., Sasa, K., Ishii, S., Yamato, Y., and Anma, R.
  • Organizer: Annual Meetings of Mineralogical Society of Japan
  • Place of Presentation: Matsuyama, Ehime, Japan.
  • Year and Date: 2005-09-23
  • Description: 「研究成果報告書概要(欧文)」より