Z1 Anhydrite Member ZEZ1W


Type section Location map See figure (pdf)
  Well Vries-1 (pdf)
  Location N 53°02’14.7
E 06°35’40.4
  Depth 3083 to 3110 m
  Length 27 m along hole
  Reference NAM and RGD (1980)
Definition The Z1 Anhydrite Member is typically a massive anhydrite body which attains a huge thickness in the sub-basins. Dolomite stringers occur frequently within the unit, which renders its distinction from the Z1 Carbonate and Z1 Fringe Carbonate Members difficult. The unit interfingers with the Z1 Middle Claystone Member, and thus may contain some clay in the sub-basins. The distinction of the boundary between these laterally equivalent members may be difficult in places. Where the Z1 Salt Member is intercalated in this unit, it is split into the Z1 Lower Anhydrite Member and the Z1 Upper Anhydrite 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].