- 2019/04 - 現在 Nagoya University Emeritus Professor
- 2015/10 - 2019/03 Professor, Institute for Space-Earth Environmental Research, Nagoya University
- 2014/04/01 - 2015/09/30 Nagoya University Center for Chronological Research Director in General
- 2012/06/01 - 2015/09/30 Professor, Center for Chronological Research, Nagoya University
- 2001/04/01 - 2012/05/31 Professor, Graduate School of Environmental Studies, Nagoya University
- 2006/04/01 - 2009/03/31 Program Officer, Research Center for Science Systems, JSPS
- 2000/10 - 2001/03 Professor, Graduate School of Science, Nagoya University
- 1996/04 - 2000/10 Associate Professor, Graduate School of Science, Nagoya University
- 1993/07 - 1996/03 Associate Professor, School of Science, Nagoya University
- 1984/03 - 1993/07 Assistant Professor, School of Science, Nagoya University
- 1989/02 - 1989/12 Visiting Fellow, Stanford University
- 1981/04 - 1982/03 Research Fellowship for Young Scientists, JSPS
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Japan Geoscience Union
, The Mineralogical Society of America
, Japan Assocuations of Mineralogical Sciences
, The Geological Society of Japan