[S-MP39] Oceanic and Continental Subduction Processes

convener:REHMAN Hafiz Ur(Department of Earth and Environmental Sciences, Graduate School of Science and Engineering, Kagoshima University), Tatsuki Tsujimori(Tohoku University), Kazuaki Okamoto(Faculty of Education, Saitama University)

This session aims at bringing earth scientists from Japan and overseas to present their research related to the processes of oceanic and continent subduction, continent-continent collisions, metamorphism of crustal rocks, formation of the oceanic/continental arcs, and accretion/ tectonic erosion of material along subduction boundaries.

Topics such as role of the fore- and back-arcs in the subduction zones, process of accretion of volcaniclastic and terrigenous sediments along the subduction/collision boundaries, deformation and metamorphism of subducted crust, and exhumation will be the main focus of the session.

Exchange of ideas among geoscientists applying different approaches on problems related to the theme of the session are most welcome.

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[SMP39-01] Models for Seismic slip and Fluid Flow along the Subduction Interface

*Donald M Fisher¹, John N Hooker¹ (1.Pennsylvania State University)

[SMP39-02] Geological records related to ridge subduction in the back-arc basin: a case study from East China Sea Shelf Basin

*Shunli Gao¹, Jun Zhao¹, Senqing Hu¹, Xiaowei Fu² (1.China National Offshore Oil Corporation (CNOOC), China Limited-Shanghai, 2.State Key Laboratory of Marine Geology, Tongji University)

[SMP39-03] Slab breakoff tectonics: constraints from temporal changes of melting conditions recorded in geochemical stratigraphy of the Cumulate Member and ultramafic dikes of the Hayachine-Miyamori ophiolite, northeast Japan

*Takafumi Kimura¹, Kazuhito Ozawa¹ (1.Department of Earth and Planetary Science, The University of Tokyo)

[SMP39-04] Boninites and related tholeiites from the southernmost of West Mariana Arc: geochemical evidence for subduction initiation

*Ji Zhang^1,2, Guoliang Zhang¹ (1.Institute of Oceanology, Chinese Academy of Sciences, 2.University of Chinese Academy of Sciences)

Cancelled

[SMP39-05] Constraints on the P–T–t evolution in the Garhwal Himalaya (NW India): Implications for early Oligocene regional Barrovian metamorphism and tectonic discontinuities

*Takeshi Imayama¹, Ryoichi Kawabata², Narayan Both³, Keewook Yi⁴, Yui Kouketsu⁵ (1.Institute of Frontier Science and Technology, Okayama University of Science, 2.Graduate School of Science, Okayama University of Science, 3.Department of Earth Science, India Institute of Technology Bombay, 4.Geochronology Team, Korea Basic Science Institute, 5.Department of Earth and Planetary Sciences, Nagoya University)

[SMP39-06] A new scheme of diffusion-limited REE-uptake model for prograde-zoned garnets in low-temperature eclogites: Principle and application

*Ryo Fukushima¹, Tatsuki Tsujimori¹ (1.Tohoku University)