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Sedimentkenmerken van strandzanden op de Belgische kust
De Moor, G.; De Decker, M. (1982). Sedimentkenmerken van strandzanden op de Belgische kust. Natuurwet. Tijdschr. 63(1-3): 49-80
In: Natuurwetenschappelijk Tijdschrift. L. Walschot/Natuur- en Geneeskundige Vennootschap: Gent. ISSN 0770-1748, more
Peer reviewed article  

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Keywords
    Properties > Sediment properties
    Sediments > Clastics > Sand
    Topographic features > Landforms > Coastal landforms > Beaches
    ANE, Belgium [Marine Regions]
    Marine/Coastal

Authors  Top 
  • De Moor, G., more
  • De Decker, M.

Abstract
    The authors review the sedimentological characteristics of superficial beach sands using samples taken every 15 m along two transversal beach profiles separated by a distance of 1 km along the Belgian coast near Klemskerke. The westernmost spot (KP37) has been sampled four months after a beach nourishment with sands supplied from the Ravelingen bank situated at a few kilometers off Ostend. At the sampling time (31-1-'79) strong beach erosion attacked the youngest dunes near by the eastern station (KP 38). Granulometric characteristics and heavy-mineral characteristics (weight of heavy minerals in the sand fraction 63-2000µm, weight of heavy minerals in the different grades, heavy-mineral composition of the over-all sand fraction, length of the most occurring heavy minerals) of the beach sands as well as of the nourishment sands and of the youngest dune sands have been analysed. The results have been used to study the sedimentological variations in relation to the micromorphological position on the beach, the differences between both stations and the intluence of reworked Ravelingen sands and youngest dune sands upon the beach material. The three main sediment groups belong to different heavy-mineral associations. The youngest dune sands are similar to the H-group (BAAK), the nourishment sands of the Ravelingen to the beach sands south of Bergen (Holland coast) (EDELMAN-EISMA). The beach sands themselves show similarity to the Rhine-AS-Kreftenheye association (ZONNEVELD). This study of mineralogical and granulometrical characteristics offers interesting prospects of the identification of dune and beach sediments, of present day eolian sands and of some off-shore bank sands along the Belgian coast. It shows as well that these mineralogically different sediments may be used,if reworked, as natural tracers for the analyses of beach dynamics and sediment movements. The beach micromorphology commands greatly the sedimentological differences of the superficial beach sands. Especially the length of the heavy minerals proved to be an interesting argument. The heavy-mineral content varies greatly with the granulometric grade.

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