Code
ROCLU
Status
Formal (NAM & RGD 1980).
Lithological description
Thick, red-rown, sandy clay- and siltstone interval with some intercalated sand-/siltstone stringers and beds. Anhydritic nodules are common in the claystones of some intervals. Some thin carbonate, anhydrite, and halite beds occur locally.
Depositional setting
Playa lake.
Definition of lower boundary
Conformably on the Silverpit Evaporite Member, from which it can be discerned by the absence of thick beds of evaporites (halite and/or anhydrite).
Definition of upper boundary
Overlain paraconformably by the black bituminous shales of the Coppershale Member of the Zechstein 1 (Werra) Formation.
Thickness indication
Up to 360 m.
Geographical distribution
Regional correlation
UK: Silverpit Formation; GER: Elbe Sub-Group; BEL: -.
Age
Capitanian - Wuchiapingian.
Holostratotype
Well:
Depth (thickness) AH:
3119 - 3258 m (139 m)
Parastratotype
Well:
Depth (thickness) AH:
3319 - 3384 m (65 m)
Parastratotype
Well:
Depth (thickness) AH:
3283 - 3405 m (122 m)
Origin of name
Name derived from the main lithology and the stratigraphic position in the upper part of the Silverpit Formation in the centre of the basin.
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.
Cite as
TNO-GDN ([YEAR]). Upper Silverpit 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/upper-silverpit-claystone-member.