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Izu-Bonin arc subduction under the Honshu island, Japan: Evidence from geological and seismological aspect |
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| Authors: | Shinji Yamamoto Junichi Nakajima Akira Hasegawa Shigenori Maruyama |
| Institution: | aDepartment of Earth and Planetary Sciences, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8551, Japan;bResearch Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan |
| Abstract: | The Izu-Bonin intra-oceanic arc with 20–35 km thick continental crust is being subducted under the Honshu, presumably since 17 Ma. Tomographic image clearly demonstrates that the whole Izu-Bonin arc is subducting under the Honshu arc. Geologic cross section and the thickness of continental crust do not support the accretion of thick crust in spite of the continued subduction over 17 Ma. |
| Keywords: | Arc subduction Accretion Tomographic images Continental crust Intra-oceanic arc Japan |
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