Japan Geoscience Union Meeting 2022

Session information

[J] Oral

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

[S-CG56] Oceanic plate as inputs to subduction zone: evolution process of the oceanic plate

Thu. May 26, 2022 10:45 AM - 12:15 PM 101 (International Conference Hall, Makuhari Messe)

convener:Gou Fujie(Japan Agency for Marine-Earth Science and Technology), convener:Makoto Yamano(Earthquake Research Institute, the University of Tokyo), Tomoaki Morishita(School of Geoscience and Civil Engineering, College of Science and Technology, Kanazawa University), convener:Takanori Kagoshima(University of Toyama), Chairperson:Gou Fujie(Japan Agency for Marine-Earth Science and Technology), Tomoaki Morishita(School of Geoscience and Civil Engineering, College of Science and Technology, Kanazawa University)

As the inputs to subduction zone, the nature of the incoming oceanic plate, such as surface relief, thermal state, lithology, and the water content, affects various processes occurring in the subduction zone, including arc magmatism and interplate and intraplate seismic activities. The oceanic plate is formed in the oceanic spreading ridge and moves through the ocean basin for a long time and subducts from the oceanic trench. The nature of the incoming oceanic plate is determined by all the processes occurring from the spreading ridge to the subduction trench; e.g., hydrothermal circulation, sedimentation and diagenesis for more than millions years at the oceanic basin, and plate bending-related faulting near the subduction trench. Therefore, for studying the nature of the subduction inputs, it is essential to reveal the various evolution processes of the oceanic plate between the spreading ridge and the subduction trench.

We welcome contributions from a broad range of earth science (geophysics, geology, petrology, drilling science, and so on) discussing topics related to the inputs to subduction zones, such as tectonic process associated with the plate bending prior to subduction, post-spreading volcanic activities including large seamount formation and petit-spot volcanoes, and the nature of the "normal" or "typical" oceanic plate.

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

11:00 AM - 11:15 AM

*Hayato Nakamura1, Hiroshi Ichihara1, Maki Hata2, Noriko Tada3, Tada-nori Goto4, Tetsuo Matsuno5, Makoto Uyeshima2 (1.Graduate school of environmental studies, Nagoya University, 2.Earthquake Research Institute, the University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology, 4.Graduate School of Life Science, University of Hyogo, 5.Kobe Ocean Bottom Exploration Center, Kobe University)

12:00 PM - 12:15 PM

*Naoto Hirano1,2, Kazuto Mikuni2, Yosuke Shimbo2, Norikatsu Akizawa3, Shiki Machida4 (1.Center for Northeast Asian Studies, Tohoku University, 2.Graduate School of Science, Tohoku University, 3. Atmosphere and Ocean Research Institute, the University of Tokyo, 4.Ocean Resources Resurech Center for Next Generation, Chiba Institution of Technology)

×

Authentication

Abstrat will be released on May 13rd. Password authentication is not possible. Please wait until the publication date.

×

Please log in with your participant account.
» Participant Log In
» Click here for Exhibitor Log In