“…Chronology of Core MD05-2905 and ODP Site 1144 were established respectively based on 12 and 7 accelerator mass spectrometry (AMS) 14 C dating points of planktonic foraminifera (Globigerinoides ruber, Globigerinoides sacculifer or mixed planktonic foraminifers) (Table 1; Bühring et al, 2004;Yang, 2008). To obtain the calendar ages of AMS 14 C dating points, the conventional radiocarbon ages were recalibrated by the program Calib 8.1.0 (Stuiver and Reimer, 1993), using the Marine20 calibration dataset (Heaton et al, 2020) and a ΔR value of -87±48 (regional mean of the South China Sea) (Southon et al, 2002;Yoneda et al, 2007).…”