|Type section||Location map||See figure (pdf)|
|Depth||1235 to 1238 m|
|Length||3 m along hole|
|Reference||NAM and RGD (1980)|
|Additional section||Location map||See figure (pdf)|
|Depth||4036 to 4088.5 m|
|Length||52.5 m along hole|
|Depth||2194 to 2246 m|
|Length||52 m along hole|
|Reference||.(amended after NAM and RGD, 1980)|
|Definition||Where it is fully developed, the Z4 Salt Member consists of relatively pure halite in its lower part, capped by a potassium-magnesium-rich salt layer. This succession is overlain by two claystone beds, separated by rock salt. Only where the member is complete, the presence of a fifth evaporite cycle (ZEZ5) can be expected. 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.|
|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].