Code
ZEFRM
Status
Informal (Van Adrichem Boogaert & Kouwe 1994).
Lithological description
Anhydritic mudstone.
Depositional setting
Sabkha environment along the margins of the basin.
Definition of lower boundary
Not yet determined.
Definition of upper boundary
Not yet determined.
Thickness indication
Not yet determined.
Geographical distribution
Along the basin fringe, in places where an argillaceous development prevails, it may be impossible to distinguish the Red-brown Salt Clay Member with certainty. In such cases this unit and the Z1 Middle Claystone Member may be lumped with the overlying Z2 Middle Claystone Member into an informal unit: the Zechstein Middle Claystone member (ZEFRM).
Regional correlation
-
Age
Wuchiapingian.
Type section
Well:
Depth (thickness) AH:
2594 - 2634 m (40 m)
Comments:
Example of argillaceous development, but no type section.
Origin of name
None.
Previous name(s)
None.
Reviewed by (date)
Mark Geluk (2017).
References
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]). Zechstein Middle Claystone member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://acc.dinoloket.nl/en/stratigraphic-nomenclature/zechstein-middle-claystone-member.