Grey loam, humic and sandy, with intercalated sand laminae and plant remains. Brown amorphous peat, clayey, silty or sandy. Locally, yellowish grey gyttja layers, calcareous.
Periglacial lacustrine, small-scale fluvial (flood basin).
Gradual transition into the other facies of the Boxtel Formation.
Erosive contact with fluvioperiglacial sand (Singraven Member, Boxtel Formation).