Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1993).
Generally fairly thick sequence of massive sandstones, calcareous, with abundant shell fragments, lignite particles and glauconite grains. Grain sizes predominantly range from fine to medium sand, but up to granule sizes occur. Bioturbation is common.
Coastal (deltaic) to marine (inner- to middle-neritic) setting, in prograding offshore-shoals and coastal-barrier systems.
Definition of lower boundary
Locally, the Bentheim Claystone Member below is absent, bringing the Bentheim Sandstone Member in unconformable contact with the Coevorden Formation (Niedersachsen Group). Usually conformably undelain by the Vlieland Claystone Formation (Bentheim Claystone Member).
Definition of upper boundary
Usually conformably overlain by the Vlieland Claystone Formation (Ruinen Member). In salt-structure and basin-fringe-related settings the Bentheim Sandstone Member can be overlain unconformably by the Holland Formation or the Lower North Sea Group.
UK: Valhall Formation; GER: Bentheim Formation; BEL: -.
Origin of name
Named after the town of Bad Bentheim in Germany.
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. 1993. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section G, Upper Jurassic and Lower Cretaceous. Mededelingen Rijks Geologische Dienst, 50, 1-80..
TNO-GDN ([YEAR]). Bentheim Sandstone Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/bentheim-sandstone-member.