Radiocarbon ages, planktonic foraminifera abundances and oxygen isotopes from 2 piston cores from the southwestern South Atlantic covering the last 40 ka

A global and regional δ18O stack (LR04 and SL14, respectively) were used to transfer ages to the two records employing calibrated radiocarbon ages as chronological control points using the automated Match algorithm. A similar correlation between the two records is found both when the two records are correlated using the age model obtained and using δ18O correlation, validating the age models obtained by repeated automated tuning.

The use of Termination I and Biozone Y/Z as chronological control points for the last deglaciation on high-resolution records is discussed here. The availability of uncertainties allowed more accurate interpretations. It is possible to observe that Biozone Y/Z is diachronous even on regional scale.