[S-MP30] Supercontinents and Crustal Evolution

2026年5月29日(金) 13:45 〜 15:15 展示場特設会場 (7) (幕張メッセ国際展示場 7・8ホール)

座長:東野文子(京都大学大学院理学研究科)、北野一平(北海道大学総合博物館)

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.

+全てマイスケジュールに登録

13:45 〜 14:00

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

*河上哲生¹、東野文子¹、鈴木将晏¹、足立達朗²、宇野正起³ (1. 京都大学大学院理学研究科、2. 九州大学、3. 東京大学)

14:00 〜 14:15

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

*東野文子¹、中野美玖¹、河上哲生¹、足立達朗²、工藤駿平¹、仁木創太⁴、宇野正起³、金鐵祐¹、平田岳史³ (1. 京都大学大学院理学研究科、2. 九州大学、3. 東京大学、4. 名古屋大学)

14:15 〜 14:30

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

*大和田正明¹、亀井淳志²、小山内康人³、豊島剛志⁵、中野伸彦³、足立達朗³、北野一平⁴ (1. 山口大学大学院創成科学研究科、2. 島根大学総合理工学部、3. 九州大学比較文化研究院、4. 北海道大学総合博物館、5. 新潟大学)

14:30 〜 14:45

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

*村山燎¹、Sreehari Lakshmanan¹ (1. 島根大学大学院)

14:45 〜 15:00

[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)

15:00 〜 15:15

[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)

セッション情報