Field Research
Sumburu Hills, Kenya (1984, two months) for the Overseas Academic Research (Research on Tertiary primates and paleoenvironment in East Africa: Hidemi Ishida of Osaka University) of Ministry of Education
Sumburu Hills, Kenya (1986, one month) for the Overseas Academic Research (Research on Tertiary primates and paleoenvironment in East Africa: Hidemi Ishida of Osaka University) of Ministry of Education
North Island volcanic field, New Zealand (1988, two months) for the International Joint Research (K-Ar chronological study of late Cenozoic volcanic rocks in New Zealand: Tetsumaru Itaya of Okayama University of Science) of JSPS
New England Fold Belt, Australia (1988, three weeks) for the Overseas Academic Research (Bending of the Greater Serpentinite Belt, eastern Australia and the tectonic history of the surrounding island arc crust: Masao Iwasaki of Tokushima University) of Ministry of Education
New England Fold Belt, Australia (1989, three weeks) for the Overseas Academic Research (Bending of the Greater Serpentinite Belt, eastern Australia and the tectonic history of the surrounding island arc crust: Masao Iwasaki of Tokushima University) of Ministry of Education
North Island volcanic field, New Zealand (1990, one month) for the International Joint Research (K-Ar chronological study of late Cenozoic volcanic rocks in New Zealand: Tetsumaru Itaya of Okayama University of Science) of JSPS
Western Alps, Italy (1990, one month) as a Head of Western Alps research team of the Earth History Project (Shigenori Maruyama of Tokyo Institute of Technology)
New England Fold Belt, Australia (1990, one month) for the Overseas Academic Research (Bending of the Greater Serpentinite Belt, eastern Australia and the tectonic history of the surrounding island arc crust: Masao Iwasaki of Tokushima University) of Ministry of Education
Paektu Mountain, China (1991, three weeks in August) for the Cave International Joint Research (Isao Sawa of Osaka University of Economics and Law)
Eastern Australia and South Island of New Zealand (1992, three weeks) for the Overseas Academic Research (Restoration of Paleozoic suture zones before Gondwana continental breakup in Australasia: Teruo Watanabe of Hokkaido University) of Ministry of Education
South Island of New Zealand (1993, one month) for the Overseas Academic Research (Restoration of Paleozoic suture zones before Gondwana continental breakup in Australasia: Teruo Watanabe of Hokkaido University) of Ministry of Education
Yunnan, China (1994, three weeks) for the Overseas Academic Research (Distribution characteristics of deposits in Yunnan, China: Tetsuya Shoji of University of Tokyo) of Ministry of Education
Ogcheon Belt, Korea (1998, three weeks) for the Study of Ogcheon Belt (Invited by Professor C.W. Oh of Chonbuk National University)
Ladakh Himalaya, India (2005, 13 days in August) for the Basic Research B Overseas Academic (Elucidation of the formation history of the Indus suture zone in the Indian Ladakh Himalaya based on highly accurate fossil and radiometric dating: Satoru Kojima of Gifu University) of JSPS
Ladakh Himalaya, India (2006, 18 days in August) for the Basic Research B Overseas Academic (Elucidation of the formation history of the Indus suture zone in the Indian Ladakh Himalaya based on highly accurate fossil and radiometric dating: Satoru Kojima of Gifu University) of JSPS
Eastern Desert, Egypt (2006, 13 days in September) for the K-Ar dating of granitic rocks in Eastern Desert area (Invited by Professor Hassan A. Eliwa of Minufiya University)
Lago di Cignana, western Alps (2008, 15 days in August) for the Basic Research A General (Accurate and reliable argon geochronology of high-pressure and ultra-high-pressure metamorphic rocks: Tetsumaru Itaya of Okayama University of Science) of JSPS
Franciscan eclogite outcrops, USA (2008, 12 days in December) for the Basic Research A General (Accurate and reliable argon geochronology of high-pressure and ultra-high-pressure metamorphic rocks: Tetsumaru Itaya of Okayama University of Science) of JSPS
Palghat-Cauvery zone, Southern India (2009, 11 days in October) for the Basic Research A General (Accurate and reliable argon geochronology of high-pressure and ultra-high-pressure metamorphic rocks: Tetsumaru Itaya of Okayama University of Science) of JSPS
Bali island, Indonesia (2009, 6 days in September) for the Basic Research B (Global resource potential assessment in Southeast Asia and construction of integrated analysis system: Koichiro Watanabe of Kyusyu University) of JSPS
Haast schists zone of the South Island, New Zealand (2010, 12 days in February) for the Basic Research A General (Accurate and reliable argon geochronology of high-pressure and ultra-high-pressure metamorphic rocks: Tetsumaru Itaya of Okayama University of Science) of JSPS
Hongsung Eclogite, Korea (2010, 6 days in June) for the Basic Research A General (Accurate and reliable argon geochronology of high-pressure and ultra-high-pressure metamorphic rocks: Tetsumaru Itaya of Okayama University of Science) of JSPS
Ouegoa, New Caledonia (2010, 11 days in August) for the Basic Research A General (Accurate and reliable argon geochronology of high-pressure and ultra-high-pressure metamorphic rocks: Tetsumaru Itaya of Okayama University of Science) of JSPS
Tatra mountains, Slovakia (2012, 12 days in April) for the Bilateral exchange project joint research (Takao Hirajima of Kyoto University) of JSPS
Jeongok, Korea (2013, 4 days in October) for the Collaborative research with Jeongok Prehistoric Museum (Invited by Kim, Jong Heon)
