Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1993).
Coarse-grained to conglomeratic sandstones with pebbles of quartz, sandstone and limestone. It frequently contains clay flakes, clay-ironstones and some coals embedded in an argillaceous, very glauconitic sandstone. Medium-grained sandstones, often with a high content of calcareous cement, occur as well, and grade locally into calcareous sandstones. In some localities a high content of sponge spicules is characteristic.
Inner- to middle-neritic, locally coastal, setting, in prograding offshore-shoals and coastal-barrier systems.
Definition of lower boundary
Conformably covers the Westerbork Member.
Definition of upper boundary
(mildly un-)Conformably overlain by the main Vlieland Claystone member. Can also be unconformably overlain by the Holland Formation.
UK: Valhall Formation; GER: Gildehaus-Formation; BEL: -.
Origin of name
Named after the village of Gildehaus in Germany, in the area of Niedersachsen.
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]). Gildehaus Sandstone Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/gildehaus-sandstone-member.