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doi:10.2204/iodp.proc.303306.211.2010

Data report: calcareous nannofossil assemblages at IODP Expedition 303 Site U1308 during the last 550,000 years¹

Shun Chiyonobu,² Hiroko Kageyama,³ and Tokiyuki Sato³

Abstract

Late Quaternary calcareous nannofossil assemblages at Integrated Ocean Drilling Program Site U1308, located in the North Atlantic Ocean, were analyzed in sediments covering the last 550,000 y. The uppermost Quaternary sediments at this site contain abundant nannofossils, and their assemblages are characterized by high species diversity. Nannofossil assemblages are characterized by abundant small specimens (<4 µm) of Gephyrocapsa throughout the sequence. Conversely, the upper part of the sequence is dominated by Coccolithus pelagicus, Calcidiscus leptoporus, and Emiliania huxleyi.

¹ Chiyonobu, S., Kageyama, H., and Sato, T., 2010. Data report: calcareous nannofossil assemblages at IODP Expedition 303 Site U1308 during the last 550,000 years. In Channell, J.E.T., Kanamatsu, T., Sato, T., Stein, R., Alvarez Zarikian, C.A., Malone, M.J., and the Expedition 303/306 Scientists, Proc. IODP, 303/306: College Station, TX (Integrated Ocean Drilling Program Management International, Inc.). doi:10.2204/​iodp.proc.303306.211.2010

² Institute of Geology and Paleontology, Graduate School of Science, Tohoku University, Aramaki-Aoba, Sendai 980-8578, Japan. chiyonobu@mail.tains.tohoku.ac.jp

³ Institute of Applied Earth Sciences, Faculty of Engineering and Resource Science, Akita University, Akita 010-8502, Japan.

Initial receipt: 10 October 2008
Acceptance: 30 March 2010
Publication: 28 May 2010
MS 303306-211

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