Japan Geoscience Union Meeting 2023

Session information

[J] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG63] Oceanic plate as inputs to subduction zone: evolution process of the oceanic plate

Mon. May 22, 2023 10:45 AM - 12:00 PM 202 (International Conference Hall, Makuhari Messe)

convener:Gou Fujie(Japan Agency for Marine-Earth Science and Technology), Naoto Hirano(Center for Northeast Asian Studies, Tohoku University), Takanori Kagoshima(University of Toyama), Yuya Akamatsu(Japan Agency for Marine-Earth Science and Technology), Chairperson:Takanori Kagoshima(University of Toyama), Gou Fujie(Japan Agency for Marine-Earth Science and Technology)

In plate subduction zones, various interplate earthquakes and volcanic activities are observed. These activities in the subduction zones are dependent on the nature of the subduction inputs, such as the surface topography, materials, temperatures, rigidity, and the degree of hydration. In addition, plate subduction plays a unique role in the global material circulation by transporting Earth's surface materials into the deep interior.

The nature of the oceanic plate as a subduction zone input, which is a boundary condition for these various tectonic activities and evolution of the Earth, is determined through various processes including the plate formation at the mid-oceanic ridge, the plate evolution at the deep sea basin, alteration due to plate-bending related faulting near the trench, and the post-spreading volcanic activities like the petit-spot.

We welcome contributions from a broad range of earth science (geophysics, geochemistry, geology, petrology, drilling science, and so on) discussing topics related to the nature of the subduction inputs and its spatial variations.

This session is supported by the focus group of hard rock drilling science.

11:00 AM - 11:15 AM

*Brian Boston1, Suzanne Carbotte2, Shuoshuo Han3, Brandon Shuck2, Jeff Beeson4, J. Pablo Canales5, Mladen Nedimovic6, Harold Tobin7, The ION GTX Processing Team8 (1.Auburn University, 2.Lamont-Doherty Earth Observatory of Columbia University, 3.University of Texas Institute for Geophysics, 4.Oregon State University, 5.Woods Hole Oceanographic Institution, 6.Dalhousie University, 7.University of Washington, 8.ION Geophysical)

11:45 AM - 12:00 PM

*Norikatsu Akizawa1,2, Akira Ishikawa3, Tetsu Kogiso4, Katsuhiko Suzuki5, Akira Miyake6, Itaru Mitsukawa6 (1.Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Macquarie University, 3.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 4.Graduate School of Human and Environmental Studies, Kyoto University, 5.Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology, 6.Department of Geology and Mineralogy, Kyoto University)

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