Buren Member ROCLB

 

Premise This Member has been defined by Van Adrichem Boogaert and Kouwe (1994) to characterise a specific development which was previously placed in the Ameland Member. It has been split off in order to restrict the latter to Silverpit Formation intercalations between the Lower and Upper Slochteren Member (see cross-section (see pdf) ). Initially described as the Ameland Claystone Member by van Adrichem Boogaert (1976) .
Derivatio nominis Named after the municipality of Buren on the Wadden island of Ameland.
Type section Location map See figure (pdf)
  Well Terschelling-1 (pdf)
  Location N 53°23’35.8
E 05°15’57.5
  Depth 2890 to 3005 m
  Length 115 m along hole
  Reference amended after NAM and RGD (1980)
Definition Thick, red-brown, sandy clay- and siltstone interval with some intercalated sand-/siltstone stringers and beds. Anhydritic nodules can be common in the claystones of some intervals.
Upper Boundary The upper boundary has been placed at the base of the first thick sandstone bed of the Upper Slochteren Member.
Lower Boundary The member rests unconformably on the grey, black or secondarily reddened coal measures of the Limburg Group. It is overlain conformably by the predominantly sandy Upper Slochteren Member.
Correlation Towards the southern transition zone, where the Lower Slochteren Member is developed, the member splits into the Upper Slochteren Hollum Member and the Upper Slochteren Ameland Member. Towards the centre of the basin the member becomes part of the main Silverpit Formation as the Upper Slochteren Member shales out.
Distribution The member is restricted to a small belt in the northern transition zone and southern basin centre, in the vicinity of the islands of Ameland and Terschelling, where the Upper Slochteren Member extends further towards the centre of the basin than the Lower Slochteren Member.
References See References Permian

Van Adrichem Boogaert, H.A. & Kouwe, W.F.P., 1993-1997. [Stratigraphic unit]. In: Stratigraphic Nomenclature of the Netherlands.
Retrieved [Datum] from [url].