Fig. 2: Stratigraphy of sediment record PS128_2.

a Comparison of planktonic (Neogloboquadrina pachyderma sin., black) and benthic (Cibicides wuellerstorfi, purple) δ¹⁸O records of cores PS128_2 with the stratigraphic reference record LS16 Deep South Atlantic δ¹⁸O stack (orange)⁴⁷. For C. wuellerstorfi, we apply a 0.64‰ interspecific offset to compensate for seawater disequilibrium⁵². b Age (ka)-depth (cm) relationship based on our age model (Supplementary Information, Supplementary Fig. 2). Stars on top of panel “a” depict calibrated radiocarbon ages (¹⁴C datings) and black diamonds depict stratigraphic δ¹⁸O tie-points. The Holocene ¹⁴C datings have been transferred from core PS111_13 to core PS128_2 by correlating their XRF records (see Supplementary Information, Supplementary Fig. 1, Supplementary Tab. 1). The blue area spanning the last 15 ka indicates the typical sedimentary sequence marked by a sharp limitation of biogenic carbonate due to low productivity of foraminiferal shells and their preservation at our site location^25,26,27 (further details on the Supplementary Information). MIS Marine Isotope Stages, which refer to past periods defined by δ¹⁸O values, representing warm and cold climate intervals, are used as stratigraphic markers⁴⁷ (see panel “a”).