Predominantly grey-brown, carbonaceous, but also variegated or red, silty claystones, fine- to medium-grained sandstones with bed thicknesses up to several metres, and coarse-grained, thick-bedded sandstones. Coal beds are virtually absent. Dispersed lignitic matter, siderite spherulites and concretions are common. Cored sections show extensive mottling of the variegated claystones. Locally, intercalated calcareous claystones and a few nodular evaporitic beds occur. Sands occur in sheets, isolated channels, or stacked valley fills.
Sands: stacked and isolated channels, and as lacustrine-deltas and crevasse-splays in a flood-plain setting. Fines: lakes and on flood-plains. Mottling and concretions: fluctuating groundwater-tables and long periods of non-deposition.
Unconformably overlies the Altena Group in the central part of the Broad Fourteens Basin. Along the margins it rests on deposits of Triassic or older age.
If a Late Kimmerian II unconformity is developed the Rijnland Group unconformably overlies this formation. At other localities, the Vlieland Sandstone Formation and Breeveertien Formation partially interfinger. In inverted settings the formation is unconformably covered by the Chalk Group or Lower North Sea Group.
UK: Humber Group; GER: ?; BEL: -.