Silverpit Evaporite Member ROCLE

 

Premise Defined by NAM and RGD (1980) . Evaporitic cycles in the German offshore area were first described in detail by Trusheim (1971) . His nomenclature of these cycles is still in use, e.g. Burri et all (1993) , although Gast (1988) suggested an alternative system.
Derivatio nominis Name derived from the characteristic main lithology of this member.
Type section Location map See figure (pdf)
  Well M09-01 (pdf)
  Location N 53°36’34.4
E 05°43’13.0
  Depth 3258 to 3438 m
  Length 180 m along hole
  Reference NAM and RGD (1980)
Additional section Location map See figure (pdf)
  Well G17-01 (pdf)
  Location N 54°04’29.9
E 05°30’41.0
  Depth 3384 to 3814 m
  Length 430 m along hole
  Well N04-01 (pdf)
  Location N 53°47’19.8
E 06°11’20.1
  Depth 3405 to 3587 m
  Length 182 m along hole
Definition Alternation of thick beds of red-brown, sandy clay- and siltstones, clear halite and white to pink anhydrite and carbonate beds. Evaporitic minerals are frequently present as nodules in the claystones. The original bedding lamination of the claystones is generally disturbed by displacive nodule growths and mudcracks.
Upper Boundary The member comprises the strata between the Lower and Upper Silverpit Members, which are both characterised by the absence of thick evaporite intervals.
Lower Boundary The member comprises the strata between the Lower and Upper Silverpit Members, which are both characterised by the absence of thick evaporite intervals.
Correlation The member was deposited during the main depositional phase of the Upper Rotliegend Group. Therefore it is the distal equivalent of Slochteren Formation and the Ameland Member.
Distribution The member is restricted to the centre of the basin.
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].