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| one publication added to basket [107863] |
Changes in coastal zone processes at a high sea-level stand: a late Holocene example from Belgium
Baeteman, C.; Scott, D.B.; van Strydonck, M. (2002). Changes in coastal zone processes at a high sea-level stand: a late Holocene example from Belgium. J. Quaternary Sci. 17(5-6): 547-559. http://dx.doi.org/10.1002/jqs.707
In: Journal of Quaternary Science. John Wiley & Sons: Harlow, Essex. ISSN 0267-8179; e-ISSN 1099-1417, meer
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Environments > Sedimentary environments
Foraminifera
Measurement > Geochronometry > Radiometric dating > Radiocarbon dating
Sedimentation > Diagenesis > Compaction
Tidal deposits
België [Marine Regions]
Marien/Kust |
| Auteurs | | Top |
- Baeteman, C., meer
- Scott, D.B.
- van Strydonck, M.
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| Abstract |
This paper presents the results of an investigation of late Holocene deposits on the Belgian coastal plain. The upper clastic deposits overlying the uppermost intercalated peat bed were studied on the basis of lithology, radiocarbon dates and foraminiferal assemblages to determine why silting-up phases or peat beds are lacking, and to establish the evolution of the sedimentary environments as well as the age of the deposits. Two contrasting sites, in quite different locations and showing a different stratigraphy, were studied. It appears that the coastal evolution was not gradual and continuous, but characterised by short periods with high-energy conditions alternating with long periods where low-energy conditions and little sedimentation prevailed. The evolution is determined mainly by tidal channel activity. At about 3400 cal. yr BP, the peat was eroded in narrow zones by the main tidal channels and this until the landward limit of the plain. The peat was only partly flooded and mudflats fringed the channels. With time, new tributaries formed and the channel network progressively enlarged. The channels were rapidly filled, followed by a period of little sedimentation, which lasted at least until 1400-1200 cal. yr BP. The following channel activity is characterised by lateral sedimentation, rather than vertical erosion, together with increased sediment reworking. The mechanisms of coastal change in the late Holocene might be similar over the entire plain, but the timing of the changes is certainly not. |
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