Office: 501 Shepherd Lab
Phone: (612) 626-0212
Fax: (612) 625-3819
E-mail: kogis001@tc.umn.edu
Personal web page: http://www.tc.umn.edu/~kogis001/

Research interests
Partial melting processes of heterogeneous mantle
Origin of isotopic and major-element heterogeneity in the Earth's mantle

Current research project
Partial melting experiments of Fe-rich wehrlite

Education
1995 Ph. D., Kyoto University, Japan (Geology and Mineralogy)
1992 M. S., Kyoto University, Japan (Geology and Mineralogy)
1990 B. S., Kyoto University, Japan (Geology and Mineralogy)

Positions Held:
1999 - present
Research Associate, University of Minnesota, USA
1998 - 1999
Postdoctoral Research Fellow, The Institute of Physical and Chemical Research (RIKEN), Japan
1995 - 1998
Postdoctoral research fellow of Japan Society for the Promotion of Science, Tokyo Institute of Technology, Japan

Selected publications:
Kogiso, T., K. Hirose, and E. Takahashi, Melting experiments on homogeneous mixtures of peridotite and basalt: Application to the genesis of ocean island basalts, Earth
Planet. Sci. Lett., 162, 45-61, 1998.

Kogiso, T., Y. Tatsumi, G. Shimoda, and H. G. Barsczus, High mu (HIMU) ocean island basalts in southern Polynesia: new evidence for whole-mantle scale recycling of
subducted oceanic crust, J. Geophys. Res., 102, 8085-8103, 1997.

Kogiso, T., Y. Tatsumi, and S. Nakano, Trace element transport during dehydration processes in the subducted oceanic crust: 1. experiments and implications for the origin of
ocean island basalts, Earth Planet. Sci. Lett., 148, 193-205, 1997.