Typically stiff reddish brown to grey clay, silty, locally fine sandy. Humic, non-calcareous, especially at the organic-rich top, which may be marked by a palaeosol. A similar deposit is found at the top of the Kreftenheye Formation (Rhine).
Floodplain of a transitional braided to meandering river (Meuse; Törnqvist et al. 1994; Makaske & Nap 1995; Busschers 2008; Autin 2008).
Commonly sharp contact with fluvial channel sand (Beegden Formation).
Partly exposed at the surface. Gradual transition into softer fluvial clay (Echteld Formation). Sharp contact with aeolian river-dune sand (Delwijnen Member, Boxtel Formation).