Fig. 2
Seawater Nd isotope records. Seawater εNd records (εNd = [(143Nd/144Nd(sample)/(143Nd/144Nd(CHUR) −1] × 104, whereby CHUR stands for the Chondritic Uniform Reservoir (143Nd/144Nd = 0.512638)63 of Ocean Drilling Program (ODP) Site 1006 (uncleaned foraminifera, this study), Site 1000 (uncleaned foraminifera, this study and ref. 34), Sites 998 and 999 (fish teeth and uncleaned foraminifera10, 34, and of ferromanganese crust Blake (BM 1963.897))28. Samples have been corrected to εNd(t) to take into account the ingrowth of 143Nd. All previously published data of the Blake crust and ODP Sites 998 and 999 are presented as thick lines that include the 2σ external reproducibility of the analyses. For clarity, the error bars for the new data are excluded in this figure, but are shown in Supplementary Fig. 3. The Blake record only starts at 8.5 Ma. The vertical lines indicate the periods of time when Caribbean and Florida Strait seawater εNd signatures diverged between 11.5 and 9.5 Ma and converged again between 9.5 and 9 Ma. The detrital composition at ODP Site 1000 changed after 9 Ma (Supplementary Fig. 3)
