Figure F5. Stable isotope (based on Cibicidoides mundulus) and percent coarse fraction (weight percentage of the >63-µm fraction) data vs. age in million years before present (Ma) in Core 202-1237B-31H. Also shown are paleomagnetic Chrons 7Ar to 9n (Gradstein et al., 2004) and last occurrence (LO) of the calcareous nannofossil Sphenolithus distentus (Shipboard Scientific Party, 2003) and LO of the planktonic foraminifer Paragloborotalia opima (this study). The initiation of the Chron 8r delta18O shift is associated with LO of P. opima. VPDB = Vienna Peedee belemnite.

Figure F5. Stable isotope (based on Cibicidoides mundulus) and percent coarse fraction (weight percentage of the >63-µm fraction) data vs. age in million years before present (Ma) in Core 202-1237B-31H. Also shown are paleomagnetic Chrons 7Ar to 9n (Gradstein et al., 2004) and last occurrence (LO) of the calcareous nannofossil Sphenolithus distentus (Shipboard Scientific Party, 2003) and LO of the planktonic foraminifer Paragloborotalia opima (this study). The initiation of the Chron 8r

¹⁸O shift is associated with LO of P. opima. VPDB = Vienna Peedee belemnite.