Code
ZEZ4T
Status
Informal (Van Adrichem Boogaert & Kouwe 1994).
Lithological description
Locally the Z4 Salt Member is overlain by a thin, recessive anhydrite, which may be called the Z4 Upper Anhydrite member (ZEZ4T). Because of its limited distribution, an informal status has been assigned to it.
Depositional setting
Playa - sabkha (?).
Definition of lower boundary
Not yet determined.
Definition of upper boundary
Not yet determined.
Thickness indication
Not yet determined.
Geographical distribution
The unit has the same distribution as the Z4 Salt.
Regional correlation
Correlatable to the German Grenzanhydrit (NAM & RGD 1980).
Age
Not yet determined.
Type section
Well:
Not yet determined.
Depth (thickness) AH:
Not yet determined.
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]). Z4 Upper Anhydrite member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/z4-upper-anhydrite-member.