Code
RNUB
Status
Informal (Van Adrichem Boogaert & Kouwe 1994).
Lithologische beschrijving
Evaporites with anhydritic claystones, anhydrite and rock-salt; red-brown to greenish clay- and siltstones; claystones, sandstones and some thin anhydrite beds. lf it is not possible to distinguish the Solling Claystone Member from the overlying Röt Formation, these may be lumped into this informal unit.
Afzettingsmilieu
Lacustrine, and restricted-marine to evaporitic settings. Fluvial conditions occurred in the basin-fringe area.
Definitie ondergrens
Not yet determined.
Definitie bovengrens
Placed below the first carbonate bed of the Muschelkalk Formation.
Dikte indicatie
Not yet determined.
Regionale correlatie
UK: Röt Formation; GER: Röt Formation; BEL: Röt Formation.
Ouderdom
late Olenakian - early Anisian.
Oorsprong naam
German origin.
Vorige benaming(en)
Partly the equivalent of the Upper Bunter Formation (NAM & RGD 1980).
Gereviewed door (datum)
Geert-Jan Vis (2019).
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]). upper Bunter unit. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://acc.dinoloket.nl/en/stratigraphic-nomenclature/upper-bunter-unit.