[S-MP29] Oceanic and Continental Subduction Processes

Tue. May 28, 2019 3:30 PM - 5:00 PM A08 (TOKYO BAY MAKUHARI HALL)

convener:REHMAN Ur Hafiz(Department of Earth and Environmental Sciences, Graduate School of Science and Engineering, Kagoshima University), Tatsuki Tsujimori(Tohoku University), Chin-Ho Tsai(Department of Natural Resources and Environmental Studies, National Dong Hwa University), Kazuaki Okamoto(Faculty of Education, Saitama University), Chairperson:Tsai Chin-HO(National Dong Hwa University), Hafiz REHMAN(Kagoshima University)

This JpGU-AGU joint 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.

In addition to the above mentioned topics, our focus for the10th anniversary of this international session will be towards our understanding and progress on the ultrahigh-pressure/temperature metamorphic terranes in the world.

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

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3:30 PM - 3:45 PM

[SMP29-06] Unusually high Nb/Ta ratio of fluid-precipitated jadeites from New Idria serpentinite body, California: Implications for extreme fractionation in slab fluids

*Naoko Takahashi¹, Tatsuki Tsujimori², Qing Chang³, Jun-Ichi Kimura³ (1.Graduate School of Science, Tohoku Univ., 2.CNEAS, Tohoku Univ., 3.Department of Solid Earth Geochemistry, JAMSTEC)

3:45 PM - 4:00 PM

[SMP29-07] The collision process interpreted using the systematic change of metamorphic pattern along theQinling–Dabie–Odesan collisional belt between the North and South Korea-China Cratons

★Invited Papers

*Chang Whan Oh^1,2 (1.Department of Earth and Environmental Sciences, Chonbuk National University, Jeonju, Republic of Korea, 2.Environmental Science System Research Center, Chonbuk National University,Jeonju, Republic of Korea)

4:00 PM - 4:15 PM

[SMP29-08] Contrasting collision processes between northwest and central Himalaya: examination from the "Lesser Himalayan granites” in Pakistan

*Masatsugu Ogasawara¹, Mayuko Fukuyama², Rehanul H Siddiqui³ (1.Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Graduate School of Engineering Science, Akita University, 3.Balochistan University of Information Technology, Engineering and Management Sciences)

4:15 PM - 4:30 PM

[SMP29-09] New petrologic indications of subduction metamorphism in the Yuli belt, eastern Taiwan

*Chin-Ho Tsai¹, Chih-Ying Yeh¹, Dominikus Deka Dewangga¹, Yui Kouketsu², Masaki Enami³ (1.Department of Natural Resources & Environmental Studies, National Dong Hwa Univ., 2.Department of Earth & Planetary Sciences, Nagoya Univ., 3.Institute for Space-Earth Environmental Research, Nagoya Univ.)

4:30 PM - 4:45 PM

[SMP29-10] The importance of Mn-nodules on the sea floor during subduction for the formation of ophiolitic diamond

*Richard Wirth¹ (1.Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences 3.5 Surface Geochemistry)

4:45 PM - 5:00 PM

[SMP29-11] Along-strike variability of primitive magmas inferred from olivine-hosted melt inclusions, southernmost Andean Southern Volcanic Zone, Chile

*Derek Weller^1,2, Charles R Stern² (1.Earthquake Research Institute, 2.University of Colorado)

Session information