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doi:10.2204/iodp.proc.303306.208.2010

Data report: Pleistocene paleomagnetic and rock magnetic records from IODP Site U1312 on the southern flank of the King’s Trough¹

Toshiya Kanamatsu,² Gary Acton,³ Helen Evans,⁴ Yohan Guyodo,⁵ and Masao Ohno⁶

Abstract

Paleomagnetic and rock magnetic studies were conducted on sediment obtained from Integrated Ocean Drilling Program Site U1312 in order to construct an age model for understanding spatial and temporal changes in North Atlantic paleoceanography. Paleomagnetic directions suggest that the sedimentary sequence from 0 to 59.6 m composite depth (mcd) covers geomagnetic polarities from 0 to 3.6 Ma. Although high fluctuations of magnetic mineral concentrations in most studied intervals are inadequate for a relative paleomagnetic intensity (RPI) study, proxies of RPI in the interval 16.9–46 mcd, which is relatively constant in magnetic mineral concentrations, represent an RPI pattern similar to previous North Atlantic data. This similarity suggests good potential for further age control using RPI on sediments from Site U1312.

¹ Kanamatsu, T., Acton, G., Evans, H., Guyodo, Y., and Ohno, M., 2010. Data report: Pleistocene paleomagnetic and rock magnetic records from IODP Site U1312 on the southern flank of the King’s Trough. 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.303306.208.2010

² Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan. toshiyak@jamstec.go.jp

³ Department of Geology, University of California, Davis, One Shields Avenue, Davis CA 95616, USA.

⁴ Department of Geological Sciences, University of Florida, 241 Williamson Hall, PO Box 112120, Gainesville FL 32611-2120, USA. Present address: Marine Geology and Geophysics, Lamont-Doherty Earth Observatory, Columbia University, PO Box 1000, 61 Route 9W, Palisades NY 10964, USA.

⁵ Laboratoire des Sciences du Climat et de l’Environnement, Campus du CNRS, 12 Ave de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
Present address: Institut de Mineralogie et de Physique des Milieux Condensés, 140 rue de Lourmel, 75015, France.

⁶ Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
Present address: Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.

Initial receipt: 9 May 2008
Acceptance: 7 January 2010
Publication: 16 April 2010
MS 303306-208

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