Delft Sandstone Member SLDND

 

Premise Member defined by van Adrichem Boogaert & Kouwe (1993).
Derivatio nominis Named after the city of Delft.
Type section Location map See figure (pdf)
  Well Monster-2 (pdf)
  Location N 52°01’56.9
E 04°10’35.1
  Depth 2224 to 2256 m
  Length 32 m along hole
Additional section Location map See figure (pdf)
  Well Woubrugge-1 (pdf)
  Location N 52°09’49.6
E 04°33’34.2
  Depth 674 to 741 m
  Length 67 m along hole
Definition Light-grey massive sandstone sequence, fine to coarse-gravelly, fining upward, lignitic.
Upper Boundary The Delft Member normally is conformably overlain by the organic rich claystones of the Rodenrijs Member.
Lower Boundary In the type section the Delft Sandstone Member unconformably overlies the Aalburg Formation. In general, the channel sands conformably overlie the flood-plain deposits of the Alblasserdam Member
Distribution Western and central parts of the West Netherlands Basin. The (coastal) marine sediments of the Vlieland Sandstone Formation towards the Broad Four-teens Basin (Q11-Q14, oldest Rijswijk Member) form the marine equivalent of the Delft Member.
Age Valanginian. Sporomorphs recorded are generally the same as those found in the overlying Rodenrijs Clay-stone Member.
Depositional Setting The sands have been interpreted as stacked distributary-channel deposits in a lower-coastal-plain setting.
Sequence Stratigraphy Transgressive systems tracts of Haq (1988) ’s sequences LZB 2.2., third subsequence.
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].