Lower Buntsandstein Subgroup

RBS

Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994).

Alternation of red-brown and green, in places grey, occasionally anhydritic claystones, siltstones and sandstones or calcareous oolite beds. In the southeastern part of the Netherlands coarse clastics, including conglomerates.

Lacustrine environment; in the Roer Valley Graben fluvial deposition prevailed.

Not yet determined.

Placed at the base of the massive sandstones in the basal part of the Volpriehausen Formation. In areas with a severe Hardegsen Unconformity truncation, the Lower Buntsandstein Formation may be unconformably overlain by the Solling Formation.

Ranging from 150 m in the West Netherlands Basin to 400 m in the Ems Low and Roer Valley Graben.

UK: Bacton Group; GER: Lower Buntsandstein Group; BEL: Lower Buntsandstein Formation.

late Changhsingian - earliest Olenekian.

Name derived from the German stratigraphic nomenclature, where the Lower Triassic red beds are called ‘Buntsandstein’, subdivided into a Lower, Middle and Upper Buntsandstein. In the Dutch nomenclature the Lower Buntsandstein Formation constitutes the lowermost sedimentary cycle of the Triassic.

Lower Buntsandstein Formation.

Johan ten Veen (2017).

NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.

Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1994. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section E, Triassic. Mededelingen Rijks Geologische Dienst, 50, 1-28.