2011 Fiscal Year Final Research Report
Study of thermal processes of seismogenic regions in the subduction zone by thermochronology and calcite-vein analysis
Project/Area Number |
21340146
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Geology
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Research Institution | Kyoto University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
TUTUMI Akito 京都大学, 理学研究科, 助教 (20509939)
WATANABE Yumiko 京都大学, 理学研究科, 助教 (20509939)
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Co-Investigator(Renkei-kenkyūsha) |
KIMURA Gaku 東京大学, 理学研究科, 教授 (80153188)
NAKAI Syuniti 東京大学, 地震研究所, 准教授 (50188869)
UMEDA Kouji 独立行政法人日本原子力研究開発機構, 地層処分研究開発部門, 研究員 (60421616)
HASEBE Noriko 金沢大学, 環日本海域環境研究センター, 准教授 (60272944)
FUKAHATA Yukitosi 京都大学, 防災研究所, 准教授 (10313206)
SAKAGUTI Arito 独立行政法人海洋研究開発機構, 地球内部変動研究センター, 研究員 (80304666)
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Project Period (FY) |
2009 – 2011
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Keywords | 熱年代学 / 方解石脈 / 沈み込み帯 / 震源域 / 熱過程 / フィッショントラック |
Research Abstract |
In order to assess quantitatively the heat generation and transfer associated with fault motions, thermochronologic analysis was conducted on the ancient seismogenic-zone fault which juxtaposes the underlying Okitsu melange unit and overlying coherent Nonokawa unit. The length and age analyses of zircon fission tracks unraveled that a zone of shortened tracks and younger ages due to secondary heating was widely distributed within about 20m away from the fault plane. Thermal history inversion and other analyses suggest that the secondary heating event was resulted from the hot fluid migration from deep crustal interiors, which is likely associated with fault motions of the out-of sequence thrust.
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Research Products
(30 results)
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[Journal Article] The first(U-Th)/Hethermochronology of pseudotachlylytefrom the Median Tectonic Line southwest Japan.2012
Author(s)
Yamada, K., Hanamuro, T., Tagami, T., Shimada, K., Takagi, H., Yamada, R., and Umeda, K
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Journal Title
J. Asian Earth Sci
Volume: 45
Pages: 17-23
DOI
Peer Reviewed
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[Journal Article] Denudation history of the Kiso Range, central Japan, and itstectonic implications : Constraints from low-temperaturethermochronology2012
Author(s)
Sueoka, S., Kohn, B. P., Tagami, T., Tsutsumi, H., Hasebe, N., Tamura, A. and Arai, S
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Journal Title
Island Arc
Volume: 21
Pages: 35-52
DOI
Peer Reviewed
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[Journal Article] Velocity dependence of shear-induced permeability associated with frictional behavior in fault zones of the Nankai subduction zone2012
Author(s)
Tanikawa, W., Mukoyoshi, H., Tadai, O., Hirose, T., Tsutsumi, A. and Lin, W
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Journal Title
Journal of Geophysical Research
Volume: (in press)
DOI
Peer Reviewed
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[Journal Article] Unspiked K-Ar dating of koolaulavas2011
Author(s)
Yamasaki, S., Sawada, R., Ozawa, A., Tagami, T., Watanabe, Y. and Takahashi, E.
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Journal Title
Chem. Geol.
Volume: 24
Pages: 243-257
DOI
Peer Reviewed
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[Journal Article] Progressiveillitization in fault gouge caused by seismic slip propagation along amegasplay fault in the Nankai Trough2011
Author(s)
Yamaguchi, A., Sakaguchi, A., Sakamoto, T., Iijima, K., Kameda, J., Kimura, G., Ujiie, K., Chester, F. M., Fabbri, O., Goldsby, D., Tsutsumi, A., Li, C-F. andCurewitz, D
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Journal Title
Geology
Volume: 39
Pages: 995-998
DOI
Peer Reviewed
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[Journal Article] 3D modeling of the cycle of a greatTohoku-oki earthquake, considering frictional behavior at low to high slip velocities2011
Author(s)
Shibazaki, B., Matsuzawa, T., Tsutsumi, A., Ujiie, K., Hasegawa, A. and Ito Y
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Journal Title
Geophysical Research Letters
Volume: 38
Peer Reviewed
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[Journal Article] Petrology, geochemistry and geochronology of Kaua' ilavas over4. 5 Myr : Implications for the origin of rejuvenated volcanism and the evolution of the Hawaiian plume2010
Author(s)
Garcia, M. O., Swinnard, L., Weis, D., Greene, A. R., Tagami, T., Sano, H., Gandy, C. E., Petrology
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Journal Title
J. Petrol
Volume: 10
Pages: 1507-1540
DOI
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[Journal Article] Anelastic strain recovery revealsextension across SW Japan subductionzone2009
Author(s)
Byrne, T. B., Lin, W., Tsutsumi, A., Yamamoto, T., Kanagawa, K., Kitamura, Y., Yamaguchi, A. and Kimura, G
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Journal Title
Geophysical Research Letters
Volume: 36
DOI
Peer Reviewed
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