日本地球惑星科学連合2018年大会

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[EE] 口頭発表

セッション記号 S (固体地球科学) » S-MP 岩石学・鉱物学

[S-MP35] Antarctica and surrounds in Supercontinent Evolution

2018年5月22日(火) 10:45 〜 12:15 302 (幕張メッセ国際会議場 3F)

コンビーナ:外田 智千(国立極地研究所)、小山内 康人(九州大学大学院比較社会文化研究院地球変動講座)、Geoffrey Hugo Grantham (共同)、Satish-Kumar Madhusoodhan(Department of Geology, Faculty of Science, Niigata University)、座長:外田 智千(国立極地研究所)、Grantham Geoffrey(University of Johannesburg)

Supercontinent formation and dispersion has been enigmatic in the Earth's history. Eurasia is one such current supercontinent and incredible progress in the understanding of its geological evolution has been achieved in the past decade. Earlier supercontinents in the Earth's history such as Gondwana (0.5 Ga), Rodinia (1.0 Ga), Columbia/Nuna (2.0 Ga), Kenorland (2.5 Ga) and Vaalbara (3.1 Ga), have been the focus of several studies, however limited information on older supercontinents has restricted an understanding of their tectonic evolution. Antarctica and surrounding areas in Gondwana, including southern Africa, Sri Lanka, India, Australia, are key regions for studying several important unsolved issues. In honor of the retirement of Professor Kazuyuki Shiraishi, Director of the National Institute of Polar Research, who developed the pioneering geological and geochronological framework of Antarctica within the Gondwana supercontinent, we invite authors around the world to present new as well as review results on the continental scale crustal processes and tectonic evolution that are associated with supercontinent formation events in Earth's history. The well-studied Eurasia, Pangaea, Rodinia and Gondwana supercontinents are of particular focus. Topics of interest include, but not restricted to, extremes in metamorphism, P-T-d-t evolution, magmatism, and the role of fluids. We hope to provide a platform for scientific discussions that will enlighten our understanding of the physical and chemical processes in the continental crust that records episodes of orogenesis that contributed to the formation and evolution of supercontinents.

10:45 〜 11:00

*Geoffrey Hugo Grantham1Conrad Adolf Groenewald1Riaan Bothma2Petrus le Roux3Kenji Horie4 (1.Department of Geology, University of Johannesburg, Auckland Park, South Africa、2.6 Van Broekhuizen Street Kuilsrivier 7580 South Africa、3.Department of Geological Sciences, University of Cape Town, Rondebosch, South Africa、4.National Institute of Polar Research, Tachikawa, Japan.)

11:00 〜 11:15

*M A Sanjeewa P K Malaviarachchi1,2,3H.M.D.A.H. Bandara2,4P.L. Dharmapriya1M Satish-Kumar3 (1.Department of Geology, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka、2.Postgraduate Institute of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka、3.Department of Geology, Faculty of Science, Niigata University, Niigata 950-2181, Japan、4.National Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka)

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