Z4 Salt Member ZEZ4H

Type sectionLocation mapSee figure (pdf)
WellRossum-Weerselo-3 (pdf)
LocationN 52°21’03.5
E 06°54’38.2
Depth1235 to 1238 m
Length3 m along hole
Reference NAM and RGD (1980)
Additional sectionLocation mapSee figure (pdf)
WellDrouwenerveen-Zuideind-1 (pdf)
LocationN 53°57’41.7”
E 06°52’16.9
Depth4036 to 4088.5 m
Length52.5 m along hole
WellUithuizermeeden-1 (pdf)
LocationN 53°26’58.9
E 06°48’29.2
Depth2194 to 2246 m
Length52 m along hole
Reference.(amended after NAM and RGD, 1980)
DefinitionWhere 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].