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dc.contributor.authorForsberg, Carl Fredrikeng
dc.contributor.authorLøvlie, Reidareng
dc.contributor.authorJansen, Eysteineng
dc.contributor.authorSolheim, Anderseng
dc.contributor.authorSejrup, Hans Pettereng
dc.contributor.authorLie, Hans Erikeng
dc.date.accessioned2004-08-06T09:42:44Z
dc.date.accessioned2004-08-26T11:57:45Z
dc.date.available2004-08-06T09:42:44Z
dc.date.available2004-08-26T11:57:45Z
dc.date.issued2003-09-15eng
dc.identifier.citationPalaeogeography, Palaeoclimatology, Palaeoecology 2003 198(1-2): 223-235en
dc.identifier.issn0031-0182 (print ISSN)eng
dc.identifier.urihttp://hdl.handle.net/1956/380
dc.description.abstractA 12.5 m long core was retrieved from the continental margin off Dronning Maud Land, Antarctica. Magnetostratigraphy, stable isotopes, 14C accelerator mass spectrometer and amino acid analyses indicate a continuous sediment record going back 1.3 Myr. Comparison of CaCO3 results with those from ODP Site 1089 and an index of North Atlantic Deep Water (NADW) influence in surface waters indicate that NADW upwelled along the Antarctic continental margin during the whole of this period. The mid-Pleistocene transition (1.0^0.6 Ma) was accompanied by an apparent decline in the NADW influence, and was followed by extended carbonate dissolution during the interglacials of marine isotope stages (MIS) 13 and 11. Less extensive periods of dissolution occur at the end of the interglacials younger than MIS 11. While interglacial dissolution is characteristic of the Pacific and Indian oceans, the carbon isotopes return to pre-transition values indicative of renewed NADW upwelling. The concentration of ice-rafted debris may reflect changes in the relative rate of interglacial sedimentation. It is speculated that the high ice rafted debris (IRD) concentrations during interglacials younger than 400 kyr may be due to a reduced relative sedimentation rate of other interglacial components whereas the low concentrations during interglacials before the mid-Pleistocene transition may be due to a higher relative sedimentation rate of these. < 2003 Elsevier B.V. All rights reserved.en
dc.format.extent32082 byteseng
dc.format.extent137 byteseng
dc.format.extent742994 byteseng
dc.format.mimetypetext/plaineng
dc.format.mimetypeapplication/pdfeng
dc.language.isoengeng
dc.publisherElseviereng
dc.subjectAntarcticeng
dc.subjectWeddell Seaeng
dc.subjectDronning Maud Landeng
dc.subjectPalaeoceanographyeng
dc.subjectStable isotopeseng
dc.subjectMagnetostratigraphyeng
dc.titleA 1.3-Myr palaeoceanographic record from the continental margin off Dronning Maud Land, Antarcticaeng
dc.typeJournal articleeng
dc.typePeer reviewedeng
dc.rights.holderCopyright 2003 Elsevier B.V.
bora.peerreviewedPeer reviewedeng
bibo.doihttp://dx.doi.org/10.1016/S0031-0182(03)00402-4eng
dc.identifier.doihttp://dx.doi.org/10.1016/S0031-0182(03)00402-4


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