Code
ZEZ4H
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994).
Lithologische beschrijving
If fully developed it consists of relatively pure halite in its lower part, capped by potassium-magnesium-rich salt layers. This succession is overlain by two claystone beds, separated by rock salt.
Afzettingsmilieu
Marine.
Definitie ondergrens
Not yet determined.
Definitie bovengrens
Locally the Z4 Salt Member is overlain by a thin, recessive anhydrite, which may be called the Z4 Upper Anhydrite member (ZEZ4T).
Dikte indicatie
Up to 399 m.
Geografische verbreiding
Regionale correlatie
UK: Aller Halite Formation; GER: Aller Steinsalz; BEL: Z4 Salt Member.
Ouderdom
early Changhsingian.
Holostratotype
Depth (thickness) AH:
1235 - 1238 m (3 m)
Hypostratotype
Depth (thickness) AH:
4036 - 4088.5 m (52.5 m)
Parastratotype
Depth (thickness) AH:
2194 - 2246 m (52 m)
Oorsprong naam
None.
Vorige benaming(en)
None.
Gereviewed door (datum)
Mark Geluk (2017).
Referenties
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 Salt 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-salt-member.