[S-IT29] [EE] New perspectives on East Asia geodynamics from the crust to the mantle

Tue. May 23, 2017 9:00 AM - 10:30 AM A03 (Tokyo Bay Makuhari Hall)

convener:Timothy B Byrne(University of Connecticut), Gaku Kimura(Tokyo University of Marine Science and Technology), Jonny Wu(University of Houston), Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo), Chairperson:Tim Byrne(University of Connecticut), Chairperson:Okino Kyoko(Atmosphere and Ocean Research Institute, The University of Tokyo)

The Philippine Sea plate and smaller East Asia marginal basins have been sandwiched by convergence of the larger Pacific and Indo-Australian plates towards Eurasia, producing some of the most active tectonic environments on Earth. The last decade has yielded a wide range of new observations that include geologic data along the plate margins, crustal to mantle imaging, and the geometry of subducted slabs. Together, these new perspectives have important implications for understanding the dynamics of plate interactions in this region. Here we seek oral and poster presentations that bear on the geologic history and geophysical character of modern and ancient plates in East Asia. We also invite geodynamic models that integrate these diverse datasets into a more holistic view of this dynamic environment.

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9:00 AM - 9:15 AM

[SIT29-01] Stagnant slab tectonics of the Japan and northern Tonga slabs

*Jonny Wu¹, John Suppe¹, Renqu Lu², Ravi V.S. Kanda³ (1.University of Houston, 2.China Earthquake Administration, 3.University of Utah)

9:15 AM - 9:35 AM

[SIT29-02] Seismic imaging of the subducting Philippine Sea plate

★Invited papers

*Dapeng Zhao¹ (1.Department of Geophysics, Tohoku University)

9:35 AM - 9:50 AM

[SIT29-03] The origin of the early Cenozoic belt-boundary thrust and the Izanagi-Pacific ridge subduction in the western Pacific margin

*Gaku Kimura¹, Asuka Yamaguchi², Jun Kameda³, Yujin Kitamura⁴, Yoshitaka Hashimoto⁵, Mari Hamahashi⁶ (1.Tokyo University of Marine Science and Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.Hokkaido University, 4.Kagoshima University, 5.Kochi University, 6.National Institute of Advanced Industrial Science and Technology)

9:50 AM - 10:05 AM

[SIT29-04] Structural evolution of the Tsushima Strait, Southern Sea of Japan, and its role in active faulting

*Johan Claringbould¹, Hiroshi Sato¹, Tatsuya Ishiyama¹, Naoko Kato¹, Shinji Kawasaki², Susumu Abe² (1.Earthquake Research Institute, The University of Tokyo, 2.JGI, Inc.)

10:05 AM - 10:20 AM

[SIT29-05] Evolutionary process of the Nankai inner accretionary prism estimated by vitrinite reflectance analysis and zircon U-Pb age dating of deep borehole samples

*Rina Fukuchi¹, Asuka Yamaguchi², Hisatoshi Ito³, Yuzuru Yamamoto¹, Juichiro Ashi² (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.Central Research Institute of Electric Power Industry)

Discussion (10:20 AM - 10:30 AM)

Session information