Upper Germanic Trias Group

Formal (NAM & RGD 1980).
Lithological description

Varicoloured, silty claystones, evaporites, carbonates and sandstones.

Depositional setting

Alternating shallow, restricted-marine, inland-playa lake and floodplain settings.

Definition of lower boundary

Unconformably at the base of the Solling Formation.

Definition of upper boundary

Unconformatbly at the base of the Sleen Formation.

Thickness indication
Up to 3900 m.
Geographical distribution
Regional correlation
UK: Haisborough Group; GER: Keuper Group, Muschelkalk Group, Upper Buntsandstein Group; BEL: Upper Germanic Trias Group.
latest Olenekian - Norian.
Depth (thickness) AH:
2808 - 3970 m (1162 m)
Origin of name
The name ‘Germanic Trias’ has been derived from the German stratigraphic nomenclature, where it refers to the sedimentary sequence between the evaporitic Zechstein Group and the marine Altena Group. The prefix ‘Upper’ applies to that part of the Germanic Trias which occurs above the Base Solling Unconformity (= Spathian Unconformity).
Previous name(s)
Reviewed by (date)
Johan ten Veen (2017).
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 E, Triassic. Mededelingen Rijks Geologische Dienst, 50, 1-28.
Cite as
TNO-GDN ([YEAR]). Upper Germanic Trias Group. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/upper-germanic-trias-group.