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The Early Pleistocene Praetiglian and Ludhamian pollen stages in the North Sea Basin and their relationship to the marine isotope record

By T. Meijer, P. Cleveringa, D.K. Munsterman and R.M.C.H. Verreussel


In this paper, the currently accepted correlation of the Early Pleistocene Ludhamian stage of England with the Tiglian-A sub-stage of the Netherlands is challenged. Recent investigations of Early Pleistocene marine North Sea deposits from a borehole near Noordwijk (the Netherlands) yielded evidence from molluscs, dinoflagellate cysts and sporomorphs for an alternation of warm-temperate and arctic intervals within the Praetiglian and Tiglian stages. Marine equivalents of the terrestrial-based pollen sub-stages Tiglian A and B have been recognised in the upper part of the sequence. A Praetiglian age can be assigned to the lower part of the sequence on the basis of mollusc analysis. Within the Praetiglian, an alternation of warm and cold phases has been recognised from both the dinoflagellate cyst and molluscan records. Three cold phases within the Praetiglian are tentatively correlated with marine isotope stages (MIS) 96-100. The molluscan assemblages provide evidence for climate forcing of the sea level: highest sea levels are reached in the warm-temperate intervals. Within the Praetiglian, an interval with an acme zone of the dinoflagellate cyst Impagidinium multiplexum, is correlated with the Ludhamian and tentatively linked to MIS 97 and/or MIS 96. The cold molluscan assemblages from the Noordwijk borehole include an acme zone of Megayoldia thraciaeformis, the first and only occurrence of this North Pacific bivalve in the North Sea Basin. Copyright © 2006 John Wiley & Sons, Ltd

Year: 2006
DOI identifier: 10.1002/jqs.956
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Provided by: NARCIS
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