Solid Earth Sciences(S)
Session Sub-categoryScience of the Earth's Interior & Tectonophysics
Session IDS-IT23
TitleNew perspectives on the geodynamics of East Asia
Short TitleGeodynamics of East Asia
Main ConvenerNameTimothy B Byrne
AffiliationUniversity of Connecticut
Co-Convener 1NameAsuka Yamaguchi
AffiliationAtomosphere and Ocean Research Institute, The University of Tokyo
Co-Convener 2NameJonny Wu
AffiliationUniversity of Houston
Co-Convener 3NameKyoko Okino
AffiliationAtmosphere and Ocean Research Institute, The University of Tokyo
Session LanguageEE
ScopeThe Pacific, Indo-Australia and Eurasian plates converge around the Philippine Sea plates in south and East Asia, resulting in one of the most tectonically active regions on earth. The area is also geologically and tectonically complex with numerous active tectonic environments, ranging from subduction to collision, and a long history of plate boundary interactions. The last decade has yielded a wide range of new observations, including detailed geologic data and high resolution crustal to mantle imaging. Here we seek oral and poster presentations that bear on the geologic history and geophysical character of modern and ancient plates in East Asia and their interactions since the Mesozoic. We also invite geodynamic models that integrate these diverse datasets into a more holistic view of this dynamic environment.
Presentation FormatOral and Poster presentation
Invited Authors
  • Maria Seton (University of Sydney)
Time Presentation No Title Presenter Abstract
Oral Presentation May 20 AM1
09:00 - 09:15 SIT23-01Key Tectonic Controversies in the Cenozoic Western Pacific and East Asian regionsGaku Kimura Abstract
09:15 - 09:30 SIT23-02Geodynamic history of subducted slabs along the East Asian margin since the CretaceousMaria Seton Abstract
09:30 - 09:45 SIT23-03A tomography-based plate tectonic reconstruction of the northwest Pacific Ocean basin since 100 MaJonny Wu Abstract
09:45 - 10:00 SIT23-04What exactly is the “Paleo-Pacific plate”? 3-D mapping of the remnant slabs in the lower mantle and their connections with the Mesozoic geologic records in East AsiaYiduo Liu Abstract
10:00 - 10:15 SIT23-05Dynamic topography in East Asia from geodynamic retrodictions of past mantle flowLorenzo Colli Abstract
Oral Presentation May 20 AM2
10:45 - 11:00 SIT23-06Geologic constraints on motion of the Philippine Sea Plate: Evidence for CCW rotation of the plate motion vector relative to Eurasia in the PleistoceneTimothy B Byrne Abstract
11:00 - 11:15 SIT23-07Co-existing normal faulting and thrusting across plate suture during arc-continent collision in eastern TaiwanJian-Cheng Lee Abstract
11:15 - 11:30 SIT23-08Magmatism events of the Panay Island, Center Philippine and its tectonic implicationsYuan Hsi Lee Abstract
11:30 - 11:45 SIT23-09Multiple-fault triggering induced by the February 2018 Mw 6.4 offshore Hualien earthquake, Taiwan: insights from geodetic measurementsMIN-CHIEN TSAI Abstract
11:45 - 12:00 SIT23-10Geochemical constraints on Pacific-Izanagi ridge subduction along the NE Asian margin from the magmatic record of Japan, Sikhote-Alin and SakhalinTsung-Jui Wu Abstract
Presentation No Title Presenter Abstract
Poster Presentation May 20 Core Time
SIT23-P01 Imaged and predicted mantle structure of the subducted Izanagi-Pacific ridge under East Asia Yi-An Lin Abstract
SIT23-P02 P and S wave attenuation tomography of the Japan subduction zone Dapeng Zhao Abstract
SIT23-P03 Plate interface roughness of subducted slab off Miyagi, Japan: a tentative interpretation for structural style of accretionary prism Jih-Hsin Chang Abstract
SIT23-P04 Sinistral sense of shear deformation under prelithification: Mélange in the upper Cretaceous Shimanto Belt, the Kii Peninsula, Southwest Japan. Norito Takesue Abstract
SIT23-P05 Discovery of plagiogranitic rocks and their effusive equivalents in the Nakanogawa Group, southern Hidaka Belt, Hokkaido, Japan Toru Yamasaki Abstract