Stratigraphy of a combined Wave- and Tide-Dominated Intertidal Sand Body: Martens Plate, East Frisian Wadden Sea, Germany

  1. B. W. Flemming and
  2. A. Bartholomä
  1. R. A. Davis Jr1 and
  2. B. W. Flemming2

Published Online: 14 APR 2009

DOI: 10.1002/9781444304138.ch8

Tidal Signatures in Modern and Ancient Sediments

Tidal Signatures in Modern and Ancient Sediments

How to Cite

Davis, R. A. and Flemming, B. W. (2009) Stratigraphy of a combined Wave- and Tide-Dominated Intertidal Sand Body: Martens Plate, East Frisian Wadden Sea, Germany, in Tidal Signatures in Modern and Ancient Sediments (eds B. W. Flemming and A. Bartholomä), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444304138.ch8

Author Information

  1. 1

    Coastal Research Laboratory, Department of Geology, University of South Florida, Tampa, Florida 33620, USA

  2. 2

    Senckenberg Institute, Schleusenstrasse 39a, 26382 Wilhelmshaven, Germany

Publication History

  1. Published Online: 14 APR 2009
  2. Published Print: 11 AUG 1995

ISBN Information

Print ISBN: 9780865429789

Online ISBN: 9781444304138

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Keywords:

  • stratigraphy of combined wave and tide;
  • vibracores, ranging from 1.4 to 4.6 m;
  • core data, consistent with physical surface structures;
  • German Bight - south-eastern portion of North Sea basin;
  • tide-dominated sand fades, in two distinct subfacies

Summary

Intertidal sand bodies are generally assumed to be tide-dominated, especially those in meso- to macrotidal settings. Vibracores ranging in length from 1.4 to 4.6 m recovered from Martens Plate, an intertidal sand body situated landward of the mesotidal Harle inlet in the East Frisian Wadden Sea of Germany, show a near equal mixture of wave- and tide-dominated sedimentary structures. The sediments of the cores are dominated by well-sorted fine sand, typically containing less than 2% mud. Bioturbation is not conspicuous throughout the cores, although the tidal flats are in places abundantly populated by the tube-forming polychaetes Arenicola marina and Lanice conchilega. Physical sedimentary structures include parallel lamination, small-scale ripple cross-stratification and mesoscale cross-bedding. Tidal bedding and tidal bundles can be recognized within several of the cores. The core data are consistent with physical surface structures observed on the present tidal flat/channel margin complex where the intertidal flat surface is dominated by wave-generated structures, whereas the channels and channel margins are dominated by current-generated bedforms.

It is concluded that it would be difficult to associate depositional sequences observed in the rock record with depositional environments corresponding to the specific backbarrier settings of sand bodies such as Martens Plate.