Z2 Roof Anhydrite Member

Code
ZEZ2T
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994).
Lithological description

Thin and pure anhydrite unit.

Depositional setting

Sabkha anhydrite.

Definition of lower boundary

Rests on the Z2 Salt Member or locally other members of the Z2 (Stassfurt) Formation.

Definition of upper boundary

Underlying the Grey Salt Clay Member at the base of the Z3 (Leine) Formation.

Thickness indication
Generally less than 30 m, but up to 94 m in COV-53.
Geographical distribution
Regional correlation
UK: Deckanhydrit Formation; GER: Deckanhydrit; BEL: Z2 Roof Anhydrit Member.
Age
Wuchiapingian.
Holostratotype
Depth (thickness) AH:
1331 - 1335 m (4 m)
Parastratotype
Depth (thickness) AH:
2548 - 2553 m (5 m)
Origin of name
None.
Previous name(s)
None.
Reviewed by (date)
Mark Geluk (2017).
References
NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1994. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section D, Permian. Mededelingen Rijks Geologische Dienst, 50, 1-42.
Cite as
TNO-GDN ([YEAR]). Z2 Roof Anhydrite Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/z2-roof-anhydrite-member.