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doi:10.2204/iodp.proc.303306.202.2009

Data report: late Quaternary calcareous nannofossil assemblages at Site U1304¹

Chuanlian Liu²

Abstract

Calcareous nannofossils can reflect millennial timescale climate changes in the North Atlantic Ocean. Using Système de Reconnaissance Automatique de Coccolithes, quantitative analysis of nannofossil assemblages were carried out on the samples from the uppermost 30.08 meters composite depth of Integrated Ocean Drilling Program Expedition 303 Site U1304. We find that calcareous nannofossils are very abundant in all samples. The assemblages are dominated by Emiliania huxleyi, Gephyrocapsa ericsonii, Gephyrocapsa muellerae, and Gephyrocapsa oceanica. Compared with a composite oxygen isotope curve composed of data from gravity Core GGC-12, piston Core JPC-13, and Site U1304, the downcore variations in relative abundance of each species are more complex.

¹ Liu, C., 2009. Data report: late Quaternary calcareous nannofossil assemblages at Site U1304. 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.303306.202.2009

² State Key Laboratory of Marine Geology, Tongji University, Siping Road 1239, Shanghai 200092, People’s Republic of China. liucl@tongji.edu.cn

Initial receipt: 6 May 2008
Acceptance: 12 May 2009
Publication: 8 July 2009
MS 303306-202

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