[S-MP29] Oceanic and Continental Subduction Processes

Tue. May 28, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

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)

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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[SMP29-P01] Zircon U-Pb ages of metasedimentary rocks in the Hakogase (Hida Marginal) area, Fukui Prefecture.

*Atsushi MIYASHITA¹, Tatsuki Tsujimori², Daniel Pastor-Galán³, Yi Keewook⁴ (1.Seikei University, 2.Tohoku University, 3.Salamanca University, 4.Korea Basic Science Institue)

[SMP29-P02] Late Permian to Early Triassic back-arc type volcanism in the southern Mongolia volcano-plutonic belt of the Central Asian Orogenic Belt: Implication for timing of the final closure of the Palaeo-Asian Ocean

*Takeshi Imayama¹, Yoichiro Koh², Kazumasa Aoki³, Mototaka Saneyoshi⁴, Koshi Yagi⁵, Shogo Aoki⁴, Yoshihiro Sawada⁶, Chiaki Ikawa⁵, Tomoya Terada⁴, Shinobu Ishigaki⁴, Shin Toyoda³, Khishigjav Tsogtbaatar⁷, Buuvei Mainbayar⁷ (1.Research Institute of Natural Sciences, Okayama University of Science, 2.Graduate School of Environmental Science, Hokkaido University, 3.Faculty of Science, Okayama University of Science, 4.Faculty of Biosphere - Geosphere Science, Okayama University of Science, 5.Hiruzen Institute for Geology and Chronology, 6.Emeritus Professor of Shimane University, 7.Institute of Paleontology and Geology, Mongolian Academy of Sciences)

[SMP29-P03] Mantle dynamics of slab breakoff constrained from the temporal change of the melting depth estimated from the Cumulate Member of the Ordovician Hayachine-Miyamori Ophiolite

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

[SMP29-P04] **Evidence of HIMU seamount on the Farallon Plate: Application of in-situ Sr-Pb isotope analysis to Franciscan lawsonite-bearing metagreywacke**

*Tomomi Hara¹, Tatsuki Tsujimori¹, Jun-Ichi Kimura² (1.Tohoku University, 2.Japan Agency for Marine-Earth Science and Technology)

[SMP29-P05] Boron isotope variations of antigorite serpentinites associated with high-pressure metamorphic rocks: A case study in the Itoigawa–Omi area of the Hida-Gaien Belt, Japan

*Chinatsu Yamada¹, Tatsuki Tsujimori¹, King Chang², Jun-Ichi Kimura² (1.Tohoku University, 2.Japan Aegency for Marine-Earth Science and Technology)

[SMP29-P06] Study of zircons structures from the Miocene Shibi-san Granodiorite, Kagoshima Prefecture, Japan

*Nakabayashi Marimo¹, REHMAN Ur Hafiz¹ (1.Kagoshima University)

[SMP29-P07] Experimental modeling of eclogite and C-O-H fluid interaction in the subduction zones

*Nadezda Chertkova¹, Shigeru Yamashita², Hiroaki Ohfuji¹, Tetsuo Irifune¹, Hirokazu Kadobayashi¹, Yoshitaka Yamamoto³ (1.Ehime University, Geodynamics Research Center, 2.Okayama University, Institute for Planetary Materials, 3.National Institute of Advanced Industrial Science and Technology)

[SMP29-P08] Microfabrics of omphacite and garnet in eclogite from the Lanterman Range, northern Victoria Land, Antarctica

*Daeyeong Kim¹, Taehwan Kim², Jungmin Kim³ (1.Division of Polar-Earth Sciences, Korea Polar Research Institute, 2.School of Earth and Environmental Sciences, Seoul National University, 3.Earth and Environmental Sciences, Korea University)

[SMP29-P09] Primordial Apatite from Ophiolite in Taiwan

*Nobuaki Niitsuma¹, Reishi Takashima², Yuan Hsi Lee³ (1.Institute of Geosciences,Shizuoka University, 2.Tohoku University Museum, 3.National Chung-Cheng University, Taiwan)

[SMP29-P10] The evolution of the Cretaceous Jinan Basin in South Korea and the age and tectonic setting for the volcanic rocks in it

*Seung Hwan LEE¹, Chang Whan Oh¹ (1.Department of earth and environmental sciences Chonbuk national university)

[SMP29-P11] GEOCHORONOLOGY AND PETROCHEMISTREY OF LATE PALEOZOIC MAGMATIC ROCKS OF THE MANDAKH AREA, SOUTHEAST MONGOLIA

*Undarmaa Batsaikhan¹, Noriyoshi Tsuchiya¹, Masaoki Uno¹, Yukio Isozaki², Uyanga Bold², Hikaru Sawada² (1.Graduate School of Environmental Studies, Tohoku University, 2.Graduate School of Arts and Sciences The University of Tokyo)

[SMP29-P12] Feedbacks Offshore the Cascadia Margin

*Joan S Gomberg¹ (1.USGS Earthquake Science Center)

Session information