De Lier Member

KNNSL

Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1993).

Alternation of thin-bedded, very fine- to fine-grained argillaceous sandstones, generally glauconitic and lignitic, and sandy claystones, commonly glauconitic and with shell fragments and frequent bioturbation. Siderite concretions are common.

Coastal to outer-neritic marine setting in a prograding coastal system.

Boundary with the Eemhaven Member or the main Vlieland Claystone Formation is a gradual transition. On the southern fringe of the West Netherlands Basin, the Eemhaven Member can be absent, and the member rests conformably upon the coastal/fluvial-plain deposits of the Nieuwerkerk Formation.

(Mildly un-)conformable upper boundary with the Lower Holland Marl Member is well-defined at the top of the sandstone.

50 - 100 m.

UK: Valhall Formation; GER: ~Minden-Braunschweig-Gruppe; BEL: -.

late Barremian - early Aptian.

Named after the village De Lier in the Dutch province of Zuid-Holland.

Originally De Lier Sandstone Member, since the lithological affix in the original definition of this member is inconclusive, it has been deleted.

Sander Houben (2017).

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..