Stratigrafische interpretatie van jong-cenozoische afzettingen bij Rumst (Belgie, provincie Antwerpen) en beschrijving van de in een post-mioceen basisgrind aangetroffen vissenfauna, 1. Inleiding en stratigrafische gegevens

A lithological description of sediments, deposited on top of the Rupelian Boon Clay in the area of Rumst, Reet and Terhagen (south of Antwerp, Belgium) is given, as well as an interpretation of the stratigraphy. Special attention has been paid to a post-Miocene basal gravel, containing a very interesting fauna of sharks, bony fishes and other fossil remains. In a second part of this paper the fishes from this deposit will be systenatically described with the purpose to estimate the age of this basal deposit.