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RESEARCH PRODUCT
Oxygen isotope compositions of phosphate from arvicoline teeth and Quaternary climatic changes, Gigny, French Jura
Cyril LangloisSophie MontuireSophie MontuireFrançois MartineauNicolas NavarroChristophe LécuyerChristophe Lécuyersubject
010506 paleontology010504 meteorology & atmospheric sciencesPleistoceneGeochemistryFractionationOxygen isotope ratio cyclePhosphate01 natural sciencesIsotopes of oxygenchemistry.chemical_compoundPaleontologyArts and Humanities (miscellaneous)chemistryIce coreGeneral Earth and Planetary SciencesQuaternaryGeology0105 earth and related environmental sciencesEarth-Surface ProcessesChronologydescription
Oxygen isotope compositions of biogenic phosphates from mammals are widely used as proxies of the isotopic compositions of meteoric waters that are roughly linearly related to the air temperature at high- and mid-latitudes. An oxygen isotope fractionation equation was determined by using present-day European arvicoline (rodents) tooth phosphate: δ18Op = 20.98(±0.59) + 0.572(±0.065) δ18Ow. This fractionation equation was applied to the Late Pleistocene karstic sequence of Gigny, French Jura. Comparison between the oxygen isotope compositions of arvicoline tooth phosphate and Greenland ice core records suggests to reconsider the previously established hypothetical chronology of the sequence. According to the δ18O value of meteoric water–mean air temperature relationships, the δ18O value of arvicoline teeth records variations in mean air temperatures that range from 0° to 15°C.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-09-01 | Quaternary Research |