Dating monospecific and single-shell benthic foraminifera samples with a gas ion source: implications for the hypothetic release of ¹⁴C-depleted CO₂ from ocean midwaters into the atmosphere

Edouard Bard (1, 2) , Yoann Fagault (1) , Thibaut Tuna (1) , Frauke Rostek (1)

1 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
2 Collège de France - Chaire Evolution du climat et de l'océan

The evidence for very old intermediate waters during the glacial and deglaciation periods and their relationship with the evolution of atmospheric pCO₂ are still debated issues. The ¹⁴C-depletion of intermediate waters may be linked to the Dansgaard-Oeschger (DO) and Heinrich (H) events abrupt climatic changes, which affected the stratification and dynamics of the global ocean during the last glacial period.

Domaines: Sciences de la Terre

Edouard Bard, Yoann Fagault, Thibaut Tuna, Frauke Rostek. Dating monospecific and single-shell benthic foraminifera samples with a gas ion source: implications for the hypothetic release of ¹⁴C-depleted CO₂ from ocean midwaters into the atmosphere. The 23rd International Radiocarbon Conference, Jun 2018, Trondheim, Norway. ⟨hal-03551962⟩