抄録
Oxygen and carbon isotopic composition of land-snail shells (carbonates) have been used as an indicator of terrestrial paleo-environmental variables such as plant vegetation, precipitation, temperature and climate change. Evaluated temperature of carbonates in environment may give us information about oxygen isotopic ration in precipitated water. Clumped-isotopes analysis of carbonates (13C-18O bond in crystal lattice of carbonate minerals) is only sensitive to their growth temperature. Here we analyzed different types of modern land-snails collected at several sampling sites in Japan and evaluated the applicability of clumped-isotopes and d18O of land snail’s shells as paleo-environmental indicators.
