Quaternary forminiferal stratigraphy in boring 81/29 from the central North Sea |
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| Authors: | KARSTEN ALBÆK JENSEN KAREN LUISE KNUDSEN |
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| Institution: | Department of Micropalaeontology, Institute of Geology, University of Aarhus, DK-8000 Århus C. Denmark |
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| Abstract: | A 140.2 m deep boring (BH 81/29) from the central North Sea (British sector) has been investigated for its foraminiferal content. Fourteen assemblage zones are identified, and these are correlated with other records from the North Sea region. The stratigraphical interpretation of BH 81/29 is supported by palaeomagnetic data and by amino acid dates and thermoluminescence dates from the same boring. Foraminiferal zones 14 to 8, from the bottom of the core, have been referred to the Early Pleistocene. Zones 7 to 4, which occur above the Bruhnes/Matuyama boundary, seem to belonged in the Middle Pleistocene, and zones 3 to 1 are referred to the Late Pleistocene. A characteristic feature of the present sequence is that a major part of the Quaternary record seems to be missing. As is also known from other areas of the North Sea, interglacial deposits are especially badly represented. |
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