Ten Boer Member ROCLT

 

Premise The unit was defined by Stäuble and Milius (1970) and adopted by van Adrichem Boogaert (1976) , who transferred it from the Rotliegend Formation to the Silverpit Formation. This was followed by NAM and RGD (1980) .
Derivatio nominis Named after the municipality of Ten Boer in the province of Groningen.
Type section Location map See figure (pdf)
  Well Slochteren-4 (pdf)
  Location N 53°11’33.2
E 06°45’14.9
  Depth 2666 to 2709 m
  Length 43 m along hole
  Reference NAM and RGD (1980)
Definition Red-brown, sandy clay- and siltstone interval with some intercalated sand-/siltstone stringers. Anhydritic nodules are less common in this member than in the other members or the main formation NAM and RGD (1980) .
Upper Boundary The unit is paraconformably overlain by the thin, black, bituminous claystones of the Coppershale Member of the Zechstein 1 (Werra) Formation of the Zechstein Group. Locally in the northeastern Netherlands, a thin, grey sandstone is intercalated between the Ten Boer Member and the base of the Zechstein Group, i.e. the informal Akkrum Sandstone member of the Slochteren Formation RGD (1993) .
Lower Boundary The member rests conformably on the sandy succession of the main Slochteren Formation or the Upper Slochteren Member. The boundary is placed at the top of the uppermost thick sandstone bed.
Correlation The Ten Boer Member passes into sandstones of the Slochteren Formation at the southern fringe of the basin. Towards the basin province it becomes part of the main Silverpit Formation as the Upper Slochteren Member shales out.
Distribution The Ten Boer Member represents the most southward extension of the Silverpit Formation. It is found in an approximately 60-km-wide belt in the transition zone and northern basin-fringe area. The unit clearly has a larger southward extension than the Ameland 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].