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De laat Holocene evolutie van de Belgische kustvlakte: sedimentatieprocessen versus zeespiegelschommelingen en Duinkerke transgressies
Baeteman, C. (2007). De laat Holocene evolutie van de Belgische kustvlakte: sedimentatieprocessen versus zeespiegelschommelingen en Duinkerke transgressies, in: de Kraker, A.M.J. et al. (Ed.) Veen-Vis-Zout. Landschappelijke dynamiek in de zuidwestelijke delta van de Lage Landen. Geoarchaeological and Bioarchaeological Studies, 8: pp. 1-17
In: de Kraker, A.M.J.; Borger, G.J. (Ed.) (2007). Veen-Vis-Zout: Landschappelijke dynamiek in de zuidwestelijke delta van de Lage Landen. Geoarchaeological and Bioarchaeological Studies, 8. Institute for Geo- and Bioarchaeology. Vrije Universiteit Amsterdam: Amsterdam. ISBN 978-90-77456-08-8. vii, 136 pp., meer
In: Geoarchaeological and Bioarchaeological Studies. Vrije Universiteit Amsterdam: Amsterdam. ISSN 1571-0750, meer
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Trefwoorden
    Coastlines
    Earth sciences > Geology > Geomorphology > Coastal morphology
    Geological time > Phanerozoic > Geological time > Cenozoic > Quaternary > Holocene
    Sedimentation
    Temporal variations > Long-term changes > Sea level changes
    Transgressions
    Belgische kust [Marine Regions]
    Marien/Kust
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  • Baeteman, C., meer
Abstract
    This paper aims at a better understanding of the mechanisms and sedimentological processes that caused the lithological variations in the Late Holocene deposits of the Belgian coastal lowlands. According to the traditional Belgian literature these deposits overlying the surface peat are the result of the Dunkirk transgressions. This transgression model with a fluctuating sea level is also used in northern Germany. However, a critical review of the index points used to construct the sea-level curve showed that they can not be considered as reliable. Since the sea-level curves of the Southern North Sea lowlands do not show sea-level fluctuations for the past 2500 years, the sedimentary characteristics and chronology of the post-peat deposits have been investigated in detail in shallow outcrops with special attention to the final infill of tidal channels. The results show that the sedimentation was discontinuous and changes happened rapidly. Frequent reworking of the final fill of the channels have been documented on the basis of age determination of shells and the consideration of the position of the shells in a broader stratigraphic context. It is suggested that the main controls on the sedimentation was the availability of sediment and the change in size of the tidal prism of the channels due to the compaction of the peat with consequently an increase of accommodation space.
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