The Holocene Marine Transgression and its Molluscan Fauna in the Skagerrak–Limfjord Region, Denmark

  1. S.-D. Nio,
  2. R. T. E. Shüttenhelm and
  3. Tj. C. E. Van Weering
  1. Kaj Strand Petersen

Published Online: 29 JUN 2009

DOI: 10.1002/9781444303759.ch34

Holocene Marine Sedimentation in the North Sea Basin

Holocene Marine Sedimentation in the North Sea Basin

How to Cite

Petersen, K. S. (1981) The Holocene Marine Transgression and its Molluscan Fauna in the Skagerrak–Limfjord Region, Denmark, in Holocene Marine Sedimentation in the North Sea Basin (eds S.-D. Nio, R. T. E. Shüttenhelm and Tj. C. E. Van Weering), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444303759.ch34

Author Information

  1. Geological Survey of Denmark, 31 Thoravej, DK-2400 Copenhagen NV, Denmark

Publication History

  1. Published Online: 29 JUN 2009
  2. Published Print: 23 DEC 1981

ISBN Information

Print ISBN: 9780632008582

Online ISBN: 9781444303759

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Keywords:

  • Holocene marine sediments in furrows;
  • Echinoidea and Ophiuroidea;
  • deeper water fauna with Abra alba, Corbula gibba;
  • early subboreal to late subboreal time;
  • high positive eustatic rise of sea-level

Summary

Late Weichselian erosional furrows in the Chalk and Pleistocene deposits of northern Jutland are demonstrated by data from wells and seismic profiles. The Holocene marine sediments in the furrows have a thickness of 30 m in cored sections. C-14 dates on various core levels indicate an early Holocene transgression around 9000–8000 BP corresponding to a depth of 25 m below local present-day sea-level. At 7000 BP the transgression reached a maximum of 3 m above present-day sea-level. The partly infilled furrows had a water depth of 25 m and connected the Limfjord system with the North Sea. With a mean sedimentation rate of 6 m per 1000 years the furrows shallowed to a water depth of 5 m between 7000–4000 BP. Beach ridges subsequently developed during the Subatlantic and disconnected the North Sea and Limfjord systems. Judging from the molluscan fauna the main part of the marine sequence deposited between 7000–5000 BP is characterized by the inshore ‘fjord’ group furnishing Abra alba and Corbula gibba.