- 2020 - 2024 Understanding biosphere-hydrosphere-atmosphere-lithosphere interactions 3.2 billion years ago with an international continental drilling program
- 2019 - 2023 Constrains on timings of cyanobacterial and eukaryotic evolutions based on innovative biomarker analyses
- 2012 - 2015 Early evolution of eukaryotic microorganisms in Archean oxygen oasis produced by cyanobacteria
- 2010 - 2014 Early evolution of ecosystem and biotic diversity revealed from Archean large microfossils
- 2007 - 2009 Diverse and large Archean microfossil assemblage from the Pilbara Craton -its origin and significance in the early evolution of life-
- 2003 - 2005 Soil Erosion and Conservation in Western Kenya
- 1999 - 2000 始源的海洋の重金属循環システムにおける生物源粒子の役割
- 1995 - 1996 Formation of the Archaean greenstone belt
- 1995 - 1995 層状チャート中の炭質層から探るチャートの堆積環境と海洋貧酸素現象
- 1994 - 1994 チャートの化学組成から推定する始生代における風化・変質・続成作用
- 1992 - 1992 始生代のチャートの化学組成・鉱物組成からさぐる太古海洋の物理・化学的諸性質
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