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Geofluid processes in subduction zones and mantle dynamics

Edited by: Tatsuhiko Kawamoto, Stephen Kirby, Junichi Nakajima, Bruno Reynard, Hiroaki Toh

Geofluids liberated from the subducting plates migrate upward and play vital roles in various subduction zone phenomena, such as magma genesis, earthquake mechanisms, crustal deformation, ore deposition etc. Geofluids and the processes they are involved in subduction zones also greatly affect the mantle dynamics, including global material circulation and chemical differentiation, and the entrance of CHO fluids into the Earth's interior.

Publication started: 1 April 2014
Publication finished: 1 April 2015

  2. We analyzed the 3-D resistivity structure beneath Naruko volcano, northeastern Japan, with the aim of imaging 3-D distribution of fluids in the crust for its volcanic and seismogenic implications. The data wer...

    Authors: Yasuo Ogawa, Masahiro Ichiki, Wataru Kanda, Masaaki Mishina and Koichi Asamori
    Citation: Earth, Planets and Space 2014 66:158
    Content type: Letter Published on:

  3. We studied the origin of deep groundwater in the Joban and Hamadori areas in southern Tohoku, Japan, based on δD, δ18O, 129I/I, 36Cl/Cl, and 3H concentrations. Deep groundwater was collected from the basement roc...

    Authors: Yoko S Togo, Kohei Kazahaya, Yuki Tosaki, Noritoshi Morikawa, Hiroyuki Matsuzaki, Masaaki Takahashi and Tsutomu Sato
    Citation: Earth, Planets and Space 2014 66:131
    Content type: Full paper Published on:

  4. The variation in water content of arc basaltic magmas in the Northeast Japan arc and the Izu arc was estimated using a simple plagioclase phenocryst hygrometer. In order to construct a plagioclase phenocryst h...

    Authors: Masashi Ushioda, Eiichi Takahashi, Morihisa Hamada and Toshihiro Suzuki
    Citation: Earth, Planets and Space 2014 66:127
    Content type: Letter Published on:

  5. Non-volcanic hot springs are generally believed to originate through circulation of meteoric or buried sea water heated at depth. In this study, we report the geochemical characteristics of the Arima and Takar...

    Authors: Chiho Kusuda, Hikaru Iwamori, Hitomi Nakamura, Kohei Kazahaya and Noritoshi Morikawa
    Citation: Earth, Planets and Space 2014 66:119
    Content type: Full paper Published on:

  6. Geofluids is important for understanding volcanic and earthquake generation processes. In this study, we obtained a detailed seismic velocity structure in and around the Naruko volcano, northeastern Japan, usi...

    Authors: Tomomi Okada, Toru Matsuzawa, Junichi Nakajima, Naoki Uchida, Mare Yamamoto, Shuichiro Hori, Toshio Kono, Takashi Nakayama, Satoshi Hirahara and Akira Hasegawa
    Citation: Earth, Planets and Space 2014 66:114
    Content type: Full paper Published on:

  7. A better understanding of fluid-related processes such as poroelastic rebound of the upper crust and weakening of the lower crust beneath the volcanic arc helps better understand and correctly interpret the he...

    Authors: Yan Hu, Roland Bürgmann, Jeffrey T Freymueller, Paramesh Banerjee and Kelin Wang
    Citation: Earth, Planets and Space 2014 66:106
    Content type: Full paper Published on:

  8. The composition of continental subduction-zone fluids varies dramatically from dilute aqueous solutions at subsolidus conditions to hydrous silicate melts at supersolidus conditions, with variable concentratio...

    Authors: Yong-Fei Zheng and Joerg Hermann
    Citation: Earth, Planets and Space 2014 66:93
    Content type: Frontier letter Published on:

  9. To understand the mechanism of an intensive non-volcanic seismic swarm in the Kii Peninsula, Japan, we used a dense seismic linear array to measure fine-scale variations of seismic velocities and converted tel...

    Authors: Aitaro Kato, Atsushi Saiga, Tetsuya Takeda, Takaya Iwasaki and Toru Matsuzawa
    Citation: Earth, Planets and Space 2014 66:86
    Content type: Letter Published on:

  10. Investigation of olivine-hosted melt inclusions provides information about the abundance of volatile elements that are often lost during subaerial eruptions of lavas. We have measured the abundances of H2O, CO2, ...

    Authors: Estelle F Rose-Koga, Kenneth T Koga, Morihisa Hamada, Thomas Hélouis, Martin J Whitehouse and Nobumichi Shimizu
    Citation: Earth, Planets and Space 2014 66:81
    Content type: Full paper Published on:

  11. A recent microphysical model for the steady-state frictional behaviour of wet illite/quartz gouges in subduction megathrust settings predicts that velocity-weakening in the seismogenic zone results from a comp...

    Authors: Sabine AM den Hartog, Demian M Saffer and Christopher J Spiers
    Citation: Earth, Planets and Space 2014 66:78
    Content type: Frontier letter Published on:

  12. The 2011 off the Pacific coast of Tohoku (Tohoku-oki) earthquake caused increased seismicity in many inland areas in Japan. A seismic cluster north of the Moriyoshi-zan volcano in Akita prefecture, Tohoku Dist...

    Authors: Masahiro Kosuga
    Citation: Earth, Planets and Space 2014 66:77
    Content type: Full paper Published on:

  14. At the western side of the Hidaka Mountain range in Hokkaido, we identify a clear later phase in seismograms for earthquakes occurring at the uppermost part of the Pacific slab beneath the eastern Hokkaido. Th...

    Authors: Takahiro Shiina, Junichi Nakajima, Genti Toyokuni and Toru Matsuzawa
    Citation: Earth, Planets and Space 2014 66:69
    Content type: Letter Published on:

  16. Geochemical signatures of arc basalts can be explained by addition of aqueous fluids, melts, and/or supercritical fluids from the subducting slab to the sub-arc mantle. Partitioning of large-ion lithophile ele...

    Authors: Tatsuhiko Kawamoto, Kenji Mibe, Hélène Bureau, Solenn Reguer, Cristian Mocuta, Stefan Kubsky, Dominique Thiaudière, Shigeaki Ono and Tetsu Kogiso
    Citation: Earth, Planets and Space 2014 66:61
    Content type: Full paper Published on:

  17. Titanian clinohumite is an accessory phase found in peridotites, and it can be a key repository of volatile and other trace elements in sub-arc mantle. To characterize spectroscopic variations due to volatile ...

    Authors: Kenneth T Koga, Carlos J Garrido, José A Padrón-Navarta, Vicente López Sánchez-Vizcaíno and María T Gómez-Pugnaire
    Citation: Earth, Planets and Space 2014 66:60
    Content type: Letter Published on:

  18. The pore fluid pressure distribution in the focal region of the 2008 Iwate-Miyagi Nairiku earthquake was investigated through an analysis of the diversity of focal mechanisms. We inverted stress orientations a...

    Authors: Keisuke Yoshida, Akira Hasegawa, Tomomi Okada, Hiroaki Takahashi, Masahiro Kosuga, Takaya Iwasaki, Yoshiko Yamanaka, Hiroshi Katao, Yoshihisa Iio, Atsuki Kubo, Takeshi Matsushima, Hiroki Miyamachi and Youichi Asano
    Citation: Earth, Planets and Space 2014 66:59
    Content type: Letter Published on:

  19. To understand the effect of plate coupling on very low-frequency event (VLFE) activity resulting from megathrust earthquakes, we performed long-term multiscale earthquake cycle simulations (including a megathr...

    Authors: Keisuke Ariyoshi, Toru Matsuzawa, Ryota Hino, Akira Hasegawa, Takane Hori, Ryoko Nakata and Yoshiyuki Kaneda
    Citation: Earth, Planets and Space 2014 66:55
    Content type: Full paper Published on:

  20. The 2008 Iwate-Miyagi Nairiku earthquake (M 7.2) was a shallow inland earthquake that occurred in the volcanic front of the northeastern Japan arc. To understand why the earthquake occurred beneath an active v...

    Authors: Hiroshi Ichihara, Shin'ya Sakanaka, Masaaki Mishina, Makoto Uyeshima, Tadashi Nishitani, Yasuo Ogawa, Yusuke Yamaya, Toru Mogi, Kazuhiro Amita and Takuya Miura
    Citation: Earth, Planets and Space 2014 66:50
    Content type: Letter Published on:

  21. The slab-mantle interface in subduction zones is a site of tectonic mixing of crustal and mantle rocks. It is the interface for fluid flow of slab-derived components into the mantle wedge. To assess the fluid-...

    Authors: Yasushi Mori, Miki Shigeno and Tadao Nishiyama
    Citation: Earth, Planets and Space 2014 66:47
    Content type: Letter Published on:

  22. The Lindås Nappe, Bergen Arc, is located in western Norway and displays two high-grade metamorphic structures. A Precambrian granulite facies foliation is transected by Caledonian fluid-induced eclogite-facies...

    Authors: Sejin Jung, Haemyeong Jung and HÃ¥kon Austrheim
    Citation: Earth, Planets and Space 2014 66:46
    Content type: Full paper Published on:

  23. The three-dimensional distribution of fluids and melts under the NE Japan arc was imaged using its resistivity structure, modeled with geomagnetic transfer functions. The data were collected at 37 stations loc...

    Authors: Wataru Kanda and Yasuo Ogawa
    Citation: Earth, Planets and Space 2014 66:39
    Content type: Letter Published on:

  26. Carbon dioxide and methane are major components in geofluids; however, there is little evidence showing how C-H-O fluids evolve in a subduction zone. We investigated fluid inclusions in quartz veins from the E...

    Authors: Atsushi Okamoto, Michimasa Musya, Yoshitaka Hashimoto and Noriyoshi Tsuchiya
    Citation: Earth, Planets and Space 2014 66:33
    Content type: Letter Published on:

  27. We performed melting experiments of hydrous pyrolite at pressures from 3 to 8 GPa and temperatures from 1,100°C to 1,800°C to identify the origin of chemical variation in cratonic garnet peridotites with high ...

    Authors: Kyoko N Matsukage and Toshisuke Kawasaki
    Citation: Earth, Planets and Space 2014 66:29
    Content type: Letter Published on:

  29. Island arc low-K tholeiites are basaltic magmas erupting from frontal arc volcanoes of juvenile arcs associated with the subduction of old and cold plates. We investigated the origins of geochemical variation ...

    Authors: Morihisa Hamada, Yuko Okayama, Takayuki Kaneko, Atsushi Yasuda and Toshitsugu Fujii
    Citation: Earth, Planets and Space 2014 66:15
    Content type: Full paper Published on:

  31. We applied the Markov random field model, which is a kind of a Bayesian probabilistic method, to the spatial inversion of the porosity and pore shape in rocks from an observed seismic structure. Gaussian Marko...

    Authors: Tatsu Kuwatani, Kenji Nagata, Masato Okada and Mitsuhiro Toriumi
    Citation: Earth, Planets and Space 2014 66:5
    Content type: Letter Published on:

  32. The electrical conductivity of brine-bearing quartzite with fluid fractions of 0.19 to 0.30 and salinity of 3 to 17 wt.% was measured at 800 to 1,100 K and 1 GPa. The conductivity of the brine-bearing quartzit...

    Authors: Akira Shimojuku, Takashi Yoshino and Daisuke Yamazaki
    Citation: Earth, Planets and Space 2014 66:2
    Content type: Letter Published on: