Code
RBBM
Status
Informal (Van Adrichem Boogaert & Kouwe 1994).
Lithological description
Sandstone. Along the basin margin, where sandy sediments prevail, it may be difficult to distinguish the boundaries between the formations in the Main Buntsandstein Subgroup, and to discern the base of the Solling Formation. This is particularly true for well sections that are studied in isolation. ln such cases it is possible to lump the formations (Volpriehausen, Detfurth and Hardegsen) together with the Basal Solling Sandstone Member into the informal middle Bunter sandstone (RBBM).
Depositional setting
Fluvial.
Definition of lower boundary
Placed at the base of the lowermost thick sandstone bed. Corresponds to the base of the Main Buntsandstein Subgroup.
Definition of upper boundary
Corresponds to the top of the Basal Solling Sandstone Member.
Thickness indication
Not yet determined.
Regional correlation
UK: Bunter Sandstone Formation; GER: Middle Buntsandstein Group; BEL: Main Buntsandstein Formation.
Age
Olenekian.
Previous name(s)
For the major part the equivalent of the Middle Bunter Formation of NAM & RGD (1980).
Reviewed by (date)
Geert-Jan Vis (2019).
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]). middle Bunter sandstone. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://acc.dinoloket.nl/en/stratigraphic-nomenclature/middle-bunter-sandstone.