10.1594/PANGAEA.736627
Helmke, Jan Peter
Jan Peter
Helmke
Bauch, Henning A
Henning A
Bauch
Mazaud, Alain
Alain
Mazaud
Ice-rafted debris, geochemistry and stable oxygen isotope record of sediment core MD99-2277
PANGAEA
2003
Calypso Corer
MD114
Marion Dufresne (1995)
International Marine Global Change Study (IMAGES)
1999-08-01T00:00:00
en
Supplementary Publication Series of Datasets
10.1002/jqs.735
10.1016/S0277-3791(03)00126-4
4 datasets
application/zip
Creative Commons Attribution 3.0 Unported
Sediment proxy records from a continuous, 1.5 million year long deep-sea sediment core from a site in the western Norwegian Sea were used to obtain new insights into the nature of palaeoceanographic change in the northern North Atlantic (Nordic seas) during the climatic shift of the Mid-Pleistocene Revolution (MPR). Red-green sediment colour and magnetic susceptibility records both reveal significant differences in their mean values when comparing the intervals older than 700 000 yr (700 ka) with those from the past 500 kyr. The timing and duration of these changes indicates that the MPR in the Nordic seas is characterised by a gradual transition lasting about 200 kyr. Together with further sedimentological evidence this suggests that the mid-Pleistocene climate shift was accompanied by a general change in ice-drift pattern. It is further proposed that prior to the onset of the major late Pleistocene glaciations in the Northern Hemisphere a significant proportion of the ice in the eastern Nordic seas originated from a southern provenance, whereas later it dominantly came from the surrounding landmasses.
Supplement to: Helmke, Jan Peter; Bauch, Henning A; Mazaud, Alain (2003): Evidence for a mid-Pleistocene shift of ice-drift pattern in the Nordic seas. Journal of Quaternary Science, 18(2), 183-191
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69.25016666666662
Jan Mayen Ridge