| 释义 |
oxygen isotope fractionation oxygen isotope fractionation[′äk·sə·jən ′īs·ə‚tōp ‚frak·shə′nā·shən] (geochemistry) The use of temperature-dependent variations of the oxygen-18/oxygen-16 ratio in the carbonate shells of marine organisms, to measure water temperature at the time of deposition. |