Muschelkalk Claystone member

Informal (NAM & RGD 1980).
Lithological description

Claystone. Where the boundary between the Middle Muschelkalk Marl Member and the Upper Muschelkalk Member tends to become obscure, e.g. in the southern onshore and the western offshore, as a result of a decrease in carbonate content of the latter member, the upper two members can be lumped into a larger unit, informally called the Muschelkalk Claystone member.

Depositional setting


Definition of lower boundary

Not yet determined.

Definition of upper boundary

Not yet determined.

Thickness indication
At least 280 m.
Geographical distribution
Not yet determined.
Regional correlation
Not yet determined.
middle Anisian - early Ladinian.
Type section
Not yet determined.
Depth (thickness) AH:
Not yet determined.
Origin of name
Name derived from the German stratigraphic nomenclature, where it is applied to the middle, predominantly marine, part of the German Triassic.
Previous name(s)
Reviewed by (date)
Geert-Jan Vis (2019).
NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.
Cite as
TNO-GDN ([YEAR]). Muschelkalk Claystone member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from