Séminaire EPOC : Russell Neil Drysdal " Corchia Cave speleothem records of glacial-interglacial climate beyond the limits of uranium-thorium dating "

Le prochain séminaire EPOC aura lieu le 23 janvier à 14 h 00  en salle Univers (Bâtiment B18, campus de Talence)

Russell Neil Drysdale (University of Melbourne, Australie) présentera une conférence sur : " Corchia Cave speleothem records of glacial-interglacial climate beyond the limits of uranium-thorium dating "

Résumé :

Speleothems are well-known, climate-sensitive archives that can be dated with relatively high precision. Recent developments in uranium-lead geochronology have opened up new opportunities to explore palaeoclimate during periods beyond the limits of traditional uranium-thorium dating (about 600 ka). In this context, speleothems from Corchia Cave (Italy) possess exceptional qualities - high uranium, high-purity calcite - for producing palaeoclimate records back beyond 1 million years. Combining stable isotopic data from these speleothems with high-resolution records from nearby ocean cores provides new insights into the Earth's climate system through the Middle Pleistocene Transition.