Z1 Fringe Sandstone Member ZEZ1S


Premise This Member is defined by van Adrichem Boogaert & Kouwe (1994)
Type section Location map See figure (pdf)
  Well Q11-01 (pdf)
  Location N 52°25’08.0
E 04°22’33.0
  Depth 2783 to 2828 m
  Length 45 m along hole
Additional section Location map See figure (pdf)
  Well P09-01A (pdf)
  Location N 52°32’19.4
E 03°44’52.2
  Depth 4500 to 4549 m
  Length 49 m along hole
  Well Q16-02 (pdf)
  Location N 52°07’05.3
E 04°07’15.3
  Depth 3851 to 3862 m
  Length 11 m along hole
Definition The Z1 Fringe Sandstone Member is a fine- to medium-grained, whitish to light-brown sandstone. The sandstone generally contains intercalated claystone beds.
Upper Boundary The upper boundary has been placed at the base of the Red-brown Salt Clay Member. Along the basin fringe, in places where a sandy development prevails, it may be impossible to distinguish the Red-brown Salt Clay Member with certainty. In such cases this unit and the Z1 Sandstone Member may be lumped with the overlying Z2 Sandstone Member into an informal unit: the Zechstein Fringe sandstone (ZEFRS). An example of such a development is found in well Q16-02, interval 3836 - 3862 m below rt.
Lower Boundary The lower boundary has been placed at the top of the Z1 Fringe Carbonate, or the Z1 Lower Claystone 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].