Origin and Sequences of Sedimentary Structures in Inshore Mesotidal Deposits of the North Sea

  1. S.-D. Nio,
  2. R. T. E. Shüttenhelm and
  3. Tj. C. E. Van Weering
  1. J. H. J. Terwindt

Published Online: 29 JUN 2009

DOI: 10.1002/9781444303759.ch1

Holocene Marine Sedimentation in the North Sea Basin

Holocene Marine Sedimentation in the North Sea Basin

How to Cite

Terwindt, J. H. J. (2009) Origin and Sequences of Sedimentary Structures in Inshore Mesotidal Deposits of the North Sea, 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.ch1

Author Information

  1. Department of Geography, Heidelberglaan 2, 3508 TC Utrecht, the Netherlands

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:

  • inshore subtidal and intertidal areas in mesotidal basins;
  • lithofacies STRO CUR;
  • lithofacies WEAK CUR;
  • lithofacies STRO WAV;
  • Lithofacies MED WAV;
  • tidal bundle - laterally enclosed by pause planes

Summary

The inshore subtidal and intertidal areas in mesotidal basins of the North Sea coasts are analysed for bedding types and sedimentary structures. Seven lithofacies can be distinguished, based on the intensity of the tidal currents and the wave action. Variation of the tidal currents produces distinctive responses in the lateral and vertical sequences of sedimentary structures within and between the lithofacies produced by megaripples. The diagnostic features of inshore mesotidal deposits appear to be bi-directional foresetting and in places the occurrence of reactivation and slackening structures; the consistent occurrence of tidal bundles and lateral neap-spring tide sequences in megaripple deposits and finally the high frequency of erosional contacts and abrupt facies changes coupled with the absence of a general vertical macro-sequence.