Code
ZEZ4A
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994).
Lithological description
The Z4 Pegmatite Anhydrite Member is a distinct white anhydrite unit, commonly with coarse halite crystals.
Depositional setting
Marine (?).
Definition of lower boundary
Not yet determined.
Definition of upper boundary
Not yet determined.
Thickness indication
Generally less than 20 m, up to 118 m in M10-04.
Geographical distribution
Regional correlation
UK: Pegmatitanhydrit Formation; GER: Aller Anhydrit, Pegmatitanhydrit, Grenzanhydrit; BEL: Z4 Pegmatite Anhydrite Member.
Age
earliest Changhsingian.
Holostratotype
Depth (thickness) AH:
1238 - 1240 m (2 m)
Parastratotype
Depth (thickness) AH:
2246 - 2247 m (1 m)
Type section
Depth (thickness) AH:
4088.5 - 4090 m (1.5 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]). Z4 Pegmatite 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-pegmatite-anhydrite-member.