Delfland Subgroup SLD


Premise Amended after NAM and RGD (1980) . The status of the Delfland Group NAM and RGD (1980) was lowered to that of a formation by Herngreen and Wong (1989) . In this publication the status of the Delfland is modified to that of a subgroup of the Schieland Group, containing those deposits of Delfland facies found south of the Vlieland High. The formations that were contained in the former Delfland Group of NAM and RGD (1980) have been lowered to a member (Fourteens Claystone) or an informal status (upper/lower Delfland). Instead, new, basin-confined formations have been defined.
Derivatio nominis Named after the polder authority of Delfland in the province of Zuid Holland.
Type section Location map See figure (pdf)
  Well Nieuwerkerk-1 (pdf)
  Location N 51°57’00.1
E 04°37’32.3
  Depth 1052 to 1942 m
  Length 890 m along hole
Additional section Location map See figure (pdf)
  Well K15-01 (pdf)
  Location N 53°13’28.2
E 03°53’47.6
  Depth 1559 to 2270 m
  Length 711 m along hole
Subdivision The Delfland Subgroup consists of the following formations:
  Vlieland and Central Netherlands Basins:
  SLDZ Zurich Formation
  SLDBC Broad Fourteens Formation
  SLDB Breeveertien Formation
  West Netherlands Basin and Roer Valley Graben
  SLDN Nieuwerkerk Formation
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].