Code
ROSLU
Status
Formal (Van Adrichem Boogaert 1976). Amended (NAM & RGD 1980) & (Van Adrichem Boogaert & Kouwe 1994).
Lithological description
Sandstone-dominated succession, similar to Lower Slochteren Member, but less conglomeratic (NAM & RGD 1980).
Depositional setting
Fluvial to aeolian dominated sandflats and sand seas on the basin fringe to transitional zone domain.
Definition of lower boundary
Overlies the Ameland Member of the Silverpit Formation. In the Terschelling-Ameland area it conformably rests on the Buren Member of the Silverpit Formation, when the Lower Slochteren Member is absent. The lower boundary has been placed (going from top to base) at the base of the last definite sandstone bed before pasing into a claystone dominated interval.
Definition of upper boundary
The unit is overlain either by the red-brown claystones of the Ten Boer Member or by the black bituminous shales of the Coppershale Member of the Z1 (Werra) Formation.
Thickness indication
Generally less than 175 m, up to 521 m in L13-FE-104-S3.
Geographical distribution
Regional correlation
UK: Leman Formation; GER: Dethlingen Formation & Hannover Formation; BEL: -.
Age
Capitanian - Wuchiapingian.
Holostratotype
Depth (thickness) AH:
2949 - 3041 m (92 m)
Hypostratotype
Depth (thickness) AH:
2784 - 2890 m (106 m)
Origin of name
The name reflects the stratigraphic position of the member, above the Ameland Member of the Silverpit Formation.
Previous name(s)
None.
Reviewed by (date)
Harmen Mijnlieff (2017).
References
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 D, Permian. Mededelingen Rijks Geologische Dienst, 50, 1-42.
Van Adrichem Boogaert, H.A. 1976. Outline of the Rotliegend (Lower Permian) in The Netherlands. In: Falke, H. (ed.), The continental Permian in Central, West, and South Europe, 23-37.
Cite as
TNO-GDN ([YEAR]). Upper Slochteren Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/upper-slochteren-member.