Lower Buntsandstein Subgroup

Code
RBS
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994).
Lithological description

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.

Depositional setting

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

Definition of lower boundary

Not yet determined.

Definition of upper boundary

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.

Thickness indication
Ranging from 150 m in the West Netherlands Basin to 400 m in the Ems Low and Roer Valley Graben.
Geographical distribution
Regional correlation
UK: Bacton Group; GER: Lower Buntsandstein Group; BEL: Lower Buntsandstein Formation.
Age
late Changhsingian - earliest Olenekian.
Holostratotype
Depth (thickness) AH:
2898 - 3255 m (357 m)
Hypostratotype
Depth (thickness) AH:
1576 - 1973 m (397 m)
Hypostratotype
Depth (thickness) AH:
2237 - 2572 m (335 m)
Origin of name
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.
Previous name(s)
Lower Buntsandstein Formation.
Reviewed by (date)
Johan ten Veen (2017).
References
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.
Cite as
TNO-GDN ([YEAR]). Lower Buntsandstein Subgroup. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/lower-buntsandstein-subgroup.