[S-MP30] Supercontinents and Crustal Evolution

Fri. May 29, 2026 1:45 PM - 3:15 PM Exhibition Hall Special Setting (7) (Exhibition Hall 7&8, Makuhari Messe)

Chairperson:Higashino Fumiko(Graduate School of Science, Kyoto University), Kitano Ippei(The Hokkaido University Museum)

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 their tectonic evolution. Several important unsolved issues remain, such as how, when and where these supercontinents formed and how long they remained as such before breaking apart. Additional questions arise on the processes that triggered the fragmentation and unification of continents. In this session, we invite authors around the world to present original new data 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 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.

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1:45 PM - 2:00 PM

[SMP30-01] Petrochronological constraints on the polymetamorphic history of the Sør Rondane Mountains: Insights from Zr-in-rutile thermometry and pseudosection modeling

*Tetsuo Kawakami¹, Fumiko Higashino¹, Masayasu Suzuki¹, Tatsuro ADACHI², Masaoki Uno³ (1. Graduate School of Science, Kyoto University, 2. Kyushu Univerisity, 3. The University of Tokyo)

2:00 PM - 2:15 PM

[SMP30-02] Reconstruction of P-T-t path of pelitic gneiss from Mefjell, Sør Rondane Mountains, East Antarctica

*Fumiko Higashino¹, Miku Nakano¹, Tetsuo Kawakami¹, Tatsuro ADACHI², Shumpei Kudo¹, Sota Niki⁴, Masaoki Uno³, Cheolwoo Kim¹, Takafumi Hirata³ (1. Graduate School of Science, Kyoto University, 2. Kyushu Univ., 3. Univ. Tokyo, 4. Nagoya University)

2:15 PM - 2:30 PM

[SMP30-03] Geochemical characteristics of Post-collisional magmatic activities in the Sør Rondane Mountains, East Antarctica: Constrains to change of tectonic regime

*Masaaki Owada¹, Atsushi Kamei², Yasuhito Osanai³, Tsuyoshi Toyoshima⁵, Nobuhiko Nakano³, Tatsuro ADACHI³, Ippei Kitano⁴ (1. Graduate School of Science and Engineering for Innovation, Yamaguchi University, 2. Department of Earth Science, Shimane University, 3. Department of Earth Sciences, Faculty of Social and Cultural Studies, Kyushu University, 4. Hokkaido University Museum, Hokkaido University, 5. Niigata University)

2:30 PM - 2:45 PM

[SMP30-04] Role of earthquakes and Fluid-Assisted Processes in Deforming the Lower Crust: Evidence from the Napier Complex, East Antarctica.

*Ryo Murayama¹, Sreehari Lakshmanan¹ (1. Shimane University Graduate School)

2:45 PM - 3:00 PM

[SMP30-05] Comparative Analysis of Radiogenic Heat Production and Crustal Thermal Evolution in Sri Lanka and East Antarctica

*DEVIKA S PANICKER¹, Jun Goto², Tomokazu Hokada³, Chris Clark⁴, Ian Fitzsimons⁴, Krishnan Sajeev⁵, Sanjeewa P.K. Malaviarachchi⁶, Prasanna Dharmapriya⁶, Madhusoodhan Satish Kumar⁷ (1. Graduate School of Science and Technology, Niigata University, Japan, 2. Institute for Research Administration, Niigata University, Japan , 3. National Institute of Polar Research, Tachikawa, Japan, 4. School of Earth and Planetary Sciences, Curtin University, Perth, Australia, 5. Centre for Earth Science, Indian Institute of Science, Bangalore, 560012, India, 6. Department of Geology, Faculty of Science, University of Peradeniya, Peradeniya, Sri Lanka, 7. Department of Geology, Faculty of Science, Niigata University, Japan)

3:00 PM - 3:15 PM

[SMP30-06] Petrogenesis of Charnockites in the Wanni Complex of Sri Lanka: Implications for tectonic evolution

*Pahan Abewardana^1,2, Madhusoodhan Satish-Kumar³, Toshiro Takahashi³, Chris Clark⁴, Krishnan Sajeev⁵, Ian Fitzsimons⁴, Sanjeewa P.K. Malaviarachchi², Kyoko Kataoka⁶ (1. Graduate School of Science and Technology, Niigata University, Japan, 2. Postgraduate Institute of Science, University of Peradeniya, Sri Lanka, 3. Department of Geology, Faculty of Science, Niigata University, Japan, 4. School of Earth and Planetary Sciences, Curtin University, Perth, WA, Australia, 5. Centre for Earth Sciences, Indian Institute of Science, Bengaluru, India, 6. Research Institute for Natural Hazard and Disaster Recovery, Niigata University, Japan)

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