Z3 (Leine) Formation ZEZ3

 

Premise This unit was first described by Visscher (1955) and formally introduced by NAM and RGD (1980) as Zechstein 3 Formation. Here it has been renamed and amended to include part of the former Fringe Zechstein Formation of NAM and RGD (1980) .
Derivatio nominis Name derived from the German stratigraphic nomenclature, where it is applied to the third evaporite cycle of the Zechstein Richter-Bernburg (1955) .
Type section Location map See figure (pdf)
  Well Rossum-Weerselo-3 (pdf)
  Location N 52°21’03.5
E 06°54’38.2
  Depth 1245 to 1331 m
  Length 86 m along hole
  Reference NAM and RGD (1980) .(sub-basin setting)
Additional section Location map See figure (pdf)
  Well Uithuizermeeden-1 (pdf)
  Location N 53°26’58.9
E 06°48’29.2
  Depth 2250 to 2548 m
  Length 298 m along hole
  Reference NAM and RGD (1980) .(main-basin setting)
  Well P09-01A (pdf)
  Location N 52°32’19.4
E 03°44’52.2
  Depth 4418 to 4437 m
  Length 19 m along hole
  Reference (carbonate/sandstone facies).
  Well Q16-02 (pdf)
  Location N 52°07’05.3
E 04°07’15.3
  Depth 3823 to 3836 m
  Length 13 m along hole
  Reference (sandstone facies)..
  Well Buurmalsen-1 (pdf)
  Location N 51°54’18.7
E 05°18’49.2
  Depth 1974 to 1992 m
  Length 18 m along hole
  Reference (claystone/evaporite facies).
Definition The third evaporite cycle of the Zechstein Group consists of a claystone - carbonate - anhydrite - salt succession, showing gradual thinning of the carbonate towards the centre of the basin. In the basin-margin area, the formation comprises claystones and sandstones.
Upper Boundary The upper boundary is formed by the base of the Red Salt Clay Member. At the fringe of the basin the formation is covered by the Zechstein Upper Claystone Formation.
Lower Boundary The formation comprises the strata between the Z2 (Stassfurt) and the Z4 (Aller) Formations. The lower boundary has been placed at the base of the Grey Salt Clay Member,
Distribution The formation was deposited more evenly than the underlying Z2 (Stassfurt) Formation, but marked variations do occur. In the sub-basins and the main basin the formation is salt-bearing, whereas on the highs usually only carbonates and anhydrites were deposited.
Age Thuringian, Late Permian.
Subdivision  
  The Z3 (Leine) Formation is never developed as a complete evaporite cycle, as the topmost, recessive anhydrites are absent. The subdivision of the formation is as follows:
  ZE Zechstein Group
  ZEZ3 Z3 (Leine) Formation
  Basin development
  ZEZ3H Z3 Salt Member Member
  ZEZ3B Z3 Anhydrite-Carbonate Member
  ZEZ3A Z3 Main Anhydrite Member
  ZEZ3C Z3 Carbonate Member Member
  ZEZ3G Grey Salt Clay Member
  Fringe development, southern offshore
  ZEZ3S Z3 Sandstone Member Member
  ZEZ3U Z3 Claystone Member Member
  ZEZ3C Z3 Carbonate Member Member
  ZEZ3G Grey Salt Clay Member
  Fringe development, southern onshore
  ZEZ3C Z3 Carbonate Member
  ZEZ3G Grey Salt Clay 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].