|Premise||Definition extended after NAM and RGD (1980) , originally De Lier Sandstone Member Since the lithological affix in the original definition of this member is inconclusive, it has been deleted.|
|Derivatio nominis||Named after the village De Lier in the Dutch province of Zuid-Holland.|
|Type section||Location map||See figure (pdf)|
|Depth||1676 to 1759 m|
|Length||83 m along hole|
|Reference||NAM and RGD (1980)|
|Definition||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. Cored intervals from the type area show abundant millimetre- to centimetre-size burrows. Siderite concretions are common. Sediments consist of decimetre-scale fining-upward beds.|
|Upper Boundary||The (mildly un-)conformable upper boundary with the Lower Holland Marl Member is well-defined at the top of the sandstone. The base of the Holland Formation (Lower Holland Claystone Member) is characterised by a sharp in-crease in GR log readings, combined with a distinct shift in SP readings.|
|Lower Boundary||The lower boundary with the Eemhaven Member or the main Vlieland Claystone Formation is a gradual transition. Towards the north the member is lost into the Vlieland Claystone Formation On the southern fringe of the West Netherlands Basin, the Eemhaven Claystone Member can be absent, and the member rests conformably upon the coastal/fluvial-plain deposits of the Nieuwerkerk Formation|
|Distribution||Southern margin of the West Netherlands Basin.|
|Age||Late Barremian to Early Aptian. Diagnostic dinocysts en-countered are: Avellodinium falsificum, Batioladinium jaegeri, B. micropodum and Pseudoceratium pelliferum. Foraminifers include Gavellinella cf. barremiana and Verneuilinoides subfiliformis.|
|Depositional Setting||Deposited in a coastal to outer-neritic marine setting in a prograding coastal system. Burrows, concretions and glauconiteare considered indicative for a more distal, open marine setting, with a low rate of deposition. Wave and storm reworking are important. Bodenhausen and Ott (1981) refer to this unit as being of deltaic origin.|
|Sequence Stratigraphy||Predominantly Highstand systems tract of Haq (1988) ’s se-quence LZB 3.5.|
|References||See References Upper Jurassic/ Lower Cretaceous|
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P., 1993-1997. [Stratigraphic unit]. In: Stratigraphic Nomenclature of the Netherlands.
Retrieved [Datum] from [url].