Research areas	igneous petrology, experimental petrology, solid earth geochemistry
Keywords	magma, mantle, rock, high-pressure experiment, synchrotron radiation X-ray
Themes	Decoding the constitution, dynamics, and chemical evolution of the Earth's interior using various rocks
Major publications	Suzuki K., Shimoda G., Ishikawa A., Kogiso T., Akizawa N. (2023) Deciphering deep mantle processes from isotopic and highly siderophile element compositions of mantle-derived rocks: Prospects and limitations. In: Core-Mantle Co-Evolution: An Interdisciplinary Approach, Geophysical Monograph 276, (Eds.) Nakagawa T., Tsuchiya T., Satish-Kumar M., and Helfrich G., Geophysical Monograph 276, 75-101, American Geophysical Union, doi:10.1002/9781119526919.ch5 Akizawa, N., Kogiso, T., Miyake, A., Tsuchiyama, A., Igami, Y., Uesugi, M. (2020) Formation process of sub-micrometer-sized metasomatic platinum-group element-bearing sulfide in Tahitian harzburgite xenolith. The Canadian Mineralogist, 58, 99-114, doi:10.3749/canmin.1800082. Shimoda, G., Kogiso, T. (2019) Effect of serpentinite dehydration in subducting slabs on isotopic diversity in recycled oceanic crust and its role in isotopic heterogeneity of the mantle. Geochemistry, Geophysics, Geosystems, 20, 5449-5472, doi:10.1029/2019GC008336. Akizawa, N., Miyake, A., Ishikawa, A., Tamura, A., Terada, Y., Uesugi, K., Takeuchi, A., Arai, S., Tanaka, C., Igami, Y., Suzuki, K., Kogiso, T. (2017) Metasomatic PGE mobilization by carbonatitic melt in the mantle: evidence from sub-µm-scale sulfide-carbonaceous glass inclusion in Tahitian harzburgite xenolith. Chemical Geology, 475, 87-104, doi:10.1016/j.chemgeo.2017.10.037. Machida, S., Kogiso, T., Hirano, N. (2017) Petit-spot as definitive evidence for partial melting in the asthenosphere caused by CO2. Nature Communications, 8:14302, doi:10.1038/ncomms14302. Kondo, N., Yoshino, T., Matsukage, K.N., Kogiso, T. (2016) Major element composition of an Early Enriched Reservoir: constraints from 142Nd/144Nd isotope systematics in the early Earth and high-pressure melting experiments of a primitive peridotite. Progress in Earth and Planetary Science, 3:25, doi:10.1186/s40645-016-0099-0. Miyoshi, A., Kogiso, T., Ishikawa, N., Mibe, K. (2014) Role of silica for the progress of serpentinization reactions: Constraints from successive changes in mineralogical textures of serpentinites from Iwanaidake ultramafic body, Japan. American Mineralogist, 99, 1035-1044, doi:10.2138/am.2014.4748. Kogiso, T., Omori, S., Maruyama, S. (2009) Magma genesis beneath Northeast Japan arc: a new perspective on subduction zone magmatism. Gondwana Research, 16, 446-457, doi:10.1016/j.gr.2009.05.006. Kogiso, T., Suzuki, K., Suzuki, T., Shinotsuka, K., Uesugi, K., Takeuchi, A., Suzuki, Y. (2008) Detecting micrometer-scale platinum-group minerals in mantle peridotite with microbeam synchrotron radiation X-ray fluorescence analysis. Geochemistry Geophysics Geosystems, 9, Q03018, doi:10.1029/2007GC001888.
Professional societies/Research and synergic activities	Geochemical Society of Japan Japan Association of Mineralogical Sciences Japan Society of High Pressure Science and Technology Volcanological Society of Japan American Geophysical Union Mineralogical Society of America
Teaching Areas	Undergraduate courses Graduate courses (Master's program) Graduate courses (Doctor's program) Undergraduate courses open to all departments
Background	1990 B.S. in Geology and Mineralogy, Kyoto Univ. 1992 M.S. in Geology and Mineralogy, Kyoto Univ. 1995 Ph.D. in Geology and Mineralogy, Kyoto Univ. 1995 JSPS Postdoctoral Research Fellow, Department of Earth and Planetary Sciences, Tokyo Inst. Tech. 1998 Postdoctoral Researcher, Computational Science Laboratory, The Institute of Physical and Chemical Research (RIKEN) 1999 Research Associate, Department of Geology and Geophysics, Univ. Minnesota 2001 Researcher, IFREE, JAMSTEC 2008 Associate Professor, Graduate School of Human and Environmental Studies, Kyoto Univ. 2016 Professor, Graduate School of Human and Environmental Studies, Kyoto Univ.

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