Proc. IODP, 303/306, Data report: Pliocene–Pleistocene planktonic foraminifer bioevents at IODP Site U1313

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Chapter contents Abstract Introduction Methods Results and discussion Early Pliocene events Late Pliocene–early Pleistocene events Astronomical age of bioevents FO of Globorotalia puncticulata LO of Globorotalia margaritae Disappearance of Globorotalia puncticulata Reappearance of Globorotalia puncticulata LO of Globorotalia puncticulata FAO of Globorotalia inflata FAO of Neogloboquadrina pachyderma sinistral Reduction of Neogloboquadrina pachyderma sinistral Increase of Neogloboquadrina pachyderma sinistral FO of Globorotalia truncatulinoides Conclusions Acknowledgments References Figures F1. Abundance vs. depth. F2. Ratio vs. depth. F3. Bioevents. Table T1. Quantitative data. PDF file			Previous \| Next doi:10.2204/iodp.proc.303306.205.2009 Conclusions Based on the quantitative analysis of some species of Globorotalia and Neogloboquadrina, we identified a series of bioevents at Site U1313 during the Pliocene and Pleistocene. These events were related with the color reflectance and magnetostratigraphic records obtained at the same site and correlated with the Lisiecki and Raymo (2005) global benthic oxygen isotope stack. A close comparison with biostratigraphic data obtained in astronomically dated sections from the Mediterranean demonstrates that most of these events were synchronous in the mid-latitudes of the North Atlantic and the Mediterranean and are very useful for chronostratigraphic correlations. Our study also shows that a high-resolution quantitative study is necessary to characterize and precisely locate these events. Top of page \| Previous \| Next

Conclusions