Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994).
Lithologische beschrijving
Lower: evaporites with anhydritic claystones, anhydrite and rock-salt. Upper: dominated by red-brown to greenish clay- and siltstones. Basin-fringe area: claystones, sandstones and some thin anhydrite beds.
Afzettingsmilieu
Lacustrine, and restricted-marine to evaporitic settings. Fluvial conditions occurred in the basin-fringe area.
Definitie ondergrens
Base of the main evaporite. In the western and southern Netherlands offshore and adjoining onshore, these evaporites grade locally into sandstones. In the West Netherlands Basin, where the evaporites did not develop, this transition may be difficult to identify. lf it is not possible to distinguish the underlying Solling Claystone Member separately, the Röt Formation may be lumped with the Solling Claystone Member into an informal unit: the upper Bunter unit (RNUB).
Definitie bovengrens
Placed below the first carbonate bed of the Muschelkalk Formation.
Dikte indicatie
Over 300 m (Dutch Central Graben), less than 50 m (south-western offshore).
Regionale correlatie
UK: Röt Formation; GER: Röt Formation; BEL: Röt Formation.
Oorsprong naam
Name derived from the German stratigraphic nomenclature, where it is applied as an alternative name for the Upper Buntsandstein.
Referenties
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]). Röt Formation. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/rot-formation.
