Kyushu University Academic Staff Educational and Research Activities Database
Researcher information (To researchers) Need Help? How to update
Yasuhito Osanai Last modified date:2017.04.21

Graduate School
Other Organization
Administration Post
Vice President
Dean of the Faculty of Social and Cultural Studies
Dean of the Graduate School of Social and Cultural Studies
Director of the Advanced Asian Archaeology Research Center(QA3RC)

Academic Degree
Doctor of Science
Field of Specialization
Geology, Petrology
Outline Activities
Recent major subject is evolution and tectonics of Continental crust, which is studied through UNESCO-IGCP programs and international collaborations (eg. SEAL project), and advanced collaboration researches with Archeology including following topics;
(1) Origin and evolution of Earth's oldest rock studied using ultrahigh-temperature metamorphic rocks from circum Indian Ocean (Antarctica, India, Sri Lanka, Madagascar, Mozambique, South Africa, Australia).
(2) Evolution of extreme conditioned metamorphic rocks (Ultrahigh temperature and ultrahigh pressure) to understanding the lower crustal processes.
(3) Granite magma genesis and evolution of continental crust
(4)Tectono-metamorphic processes of East and South-East Asia including Japanese domestic metamorphic terranes.
(5) Tectonic evolution of Antarctic continental crust.
(6) Collaboration researches with Archeology using advanced analytical facilities/techniques.
Current and Past Project
  • Geological and Tectonic Evolution of Gondwana Super Continent through the geological and petrological studies at Sor Rondane Mountains in Antarctica.
Academic Activities
1. M. Satish-Kumar, Y. Motoyoshi, Y. Osanai, Y. Hiroi and K. Shiraishi, Geodynamic Evolution of East Antarctica: a Key to the East-West Gondowana Connection, Geological Society of London, 300, 2008.11.
1. Yasuhito Osanai, Sajeev, K., Nobuhiko Nakano, Ippei Kitano, Kehelpannala, W.K.V., Ryosuke Kato, Tatsuro Adachi, Malaviarachchi, S.P.K., UHT granulites of the Highland Complex, Sri Lanka II: Geochronological constraints and implications for Gondwana correlation, Journal of Minaralogical and Petrological Sciences, 111, 3, 157-169, 2016.06.
2. Yasuhito Osanai, Sajeev, K., Nobuhiko Nakano, Ippei Kitano, Kehelpannala, W.K.V., Ryosuke Kato, Tatsuro Adachi, Malaviarachchi, S.P.K., UHT granulites of the Highland Complex, Sri Lanka I: Geological and petrological background, Journal of Minaralogical and Petrological Sciences, 111, 3, 145-156, 2016.06.
3. Yasuhito Osanai, Yoshifumi Nogi, Sotaro Baba, Nobuhiko Nakano, Tatsuro Adachi, Tomokazu Hokada, Tsuyoshi Toyoshima, Masaaki Owada, M. Satish-Kumar, Atsushi Kamei, Ippei Kitano, Geologic evolution of the Sør Rondane Mountains, East Antarctica: Collision tectonics proposed based on metamorphic processes and magnetic anomalies, Precambrian Research, 234, 2013.09.
4. Sajeev Krishnan, Ian S. Williams, Yasuhito Osanai, SHRIMP U-Pb dating of prograde and retrograde UHT metamorphism as exemplified by Sri Lankan granulites, Geology, 38, 971-974, 2010.10.
5. M. Satish-Kumar, J. Hermann, Tomoharu Miyamoto, Yasuhito Osanai, Fingerprinting a multistage metamorphic fluid-rock history: Evidence from grain scale Sr, O and C isotopic and trace element variations in high-grade marbles from East Antarctica, Lithos, 114, 217-228, 2010.05.
6. Nobuhiko Nakano, Yasuhito Osanai, Sajeev Krishnan, Yasutaka Hayasaka, Tomoharu Miyamoto, Minh Thi Nguyen, Masaaki Owada, Brian Windley, Triassic eclogite from northern Vietnam: inferences and geological significance. , Jour. Metamorphic Geol., 28, 59-76, 2010.01.
7. Nobuhiko Nakano, Yasuhito Osanai, Masaaki Owada, Yasutaka Hayasaka, Tran Ngoc Nam, Permo-Triassic Barrovian metamorphism in the Kontum Massif, central Vietnam: constraints on continental collision tectonics in Southeast Asia, Island Arc, 18, 126-143., 2009.01.
8. Toyoshima, T., Osanai, Y. and Nogi, Y., Macroscopic geological structures of the Napier and Rayner Complexes, East Antarctica, Geological Society of London, Special Publications, 308, 139-146., 2008.11.
9. Kawasaki, T. and Osanai, Y., Empirical thermometer of TiO2 in quartz for ultrahigh-temperature granulites of East Antarctica, Geological Society of London, Special Publications, 308, 419-430., 2008.11.
10. Osanai, Y., Nakano, N., Owada, M., Tran Ngoc Nam, Miyamoto, T., Nguyen Thi Minh, Nguyen Van Nam and Tran Van Tri, Collision zone metamorphism in Vietnam and adjacent South-eastern Asia: Proposition for Trans Vietnam Orogenic Belt, Jour. Mineral. Petrol. Sci., 103, 226-241., 2008.08.
11. Nakano, N., Osanai, Y., Minh, N.T., Miyamoto, T., Hayasaka, Y. and Owada, M., Discovery of high-pressure granulite-facies metamorphism in northern Vietnam: Constraints on the Permo-Triassic Indochinese continental collision tectonics, Compites Rndus Geoscience, 340, 127-138, 2008.01.
12. Nakano, N., Osanai, Y. and Owada, M., Multiple breakdown and chemical equilibrium of silicic clinopyroxene under extreme metamorphic conditions in the Kontum Massif, central Vietnam, American Mineralogist, 92, 1844-1855, 2007.10.
13. Sajeev, K., Osanai, Y., Connolly, J.A.D., Suzuki, S., Ishioka, J., Kagami, H. and Rino, S, Extreme Crustal Metamorphism during a Neoproterozoic Event in Sri Lanka: A Study of Dry Mafic Granulites, Journal of Geology, 115, 563-582, 2007.03.
14. Osanai, Y., Sajeev, K., Owada,M., Kehalpannala, K.V.W., Prem, W.K.B., Nakano, N. and Jayatileke, S., Metamorphic evolution of ultrahigh-temperature and high-pressure granulites from the Highland Complex, Sri Lanka, Journal of Asian Earth Science, 28, 20-37., 2006.06.
15. Osanai, Y., Owada, M., Kamei, A., Hamamoto, T., Kagami, H., Toyoshima, T., Nakano, N. and Tran Ngoc Nam, The Higo metamorphic complex in Kyushu, Japan as the fragment of Permo-Triassic metamorphic complexes in East Asia., Gondwana Res., 9, 152-166., 2006.01.
16. Sajeev, K. and Osanai, Y., Thermal gradients in the Sri Lankan granulite terrane: a garnet-biotite thermometric approach., J. Metamorphic Geol., 23, 5, 23, 383-397., 2005.07.
17. Sajeev, K., Osanai, Y. and Santosh, M., Ultrahigh-temperature metamorphism followed by two-stage decompression of Grt-Opx-Sil granulites from Ganguvarpatti, Madurai block, southern India, Contrib. Mineral. Petrol., 148, 1, 148, 29-46, 2004.10.
18. Osanai, Y., Nakano, N., Owada, M., Tran, N. Nam, Toyoshima, T., Tsunogae, T. and Binh, P., Permo-Triassic ultrahigh-temperature metamorphism in the Kontum massif, central Vietnam, Jour. Mineral. Petrol. Sci., 99, 4, 99, 230-247., 2004.07.
  • Honorary Geologist of Mongolia
  • Metamorphic evolution of Kontum Massif in central Vietnam
Professional and Outreach Activities
・Public lectures on Antarctic Earth Sciences and Evolution of Natural Environments in Gondwana and East Asia
(Kurashiki city, Okayama prefecture, Okayama University, High/Junior High Schools)"""
・Deputy leader of 49th Japanese Antarctic Research Expedition.