Proc. IODP, 303/306, Data report: Quaternary calcareous nannofossil datums and biochronology in the North Atlantic Ocean, IODP Site U1308

IODP Proceedings Volume contents Search

Expedition reports Research results Supplementary material Drilling maps Expedition bibliography
Chapter contents Abstract Introduction Samples and methods Results Remarks on stratigraphic position of datums Datum 8: last occurrence of Gephyrocapsa spp. (large) Datum 5: last occurrence of Reticulofenestra asanoi Datums 2 and 3: first occurrence of Emiliania huxleyi and last occurrence of Pseudoemiliania lacunosa Conclusion Acknowledgments References Figures F1. Site map. F2. Marker species. F3. Datum events. F4. Oxygen isotope stratigraphy. Table T1. Datum ages. PDF file			Previous \| Next doi:10.2204/iodp.proc.303306.210.2009 Conclusion We clarify the critical relationship between nannofossil biostratigraphy, oxygen isotope stratigraphy, and magnetostratigraphy based on high-resolution studies of the Quaternary sequence of Site U1308 in the North Atlantic Ocean. The last occurrence of Gephyrocapsa spp. (large) is situated within the Cobb Mountain Subchron, the same as results by Takayama and Sato (1987), and is traceable to MIS 35. The first occurrence of E. huxleyi and last occurrence of P. lacunosa are correlated to the stratigraphic position just before the highest peak of MIS 8 and 12, respectively. Top of page \| Previous \| Next

Conclusion