Code
ROCLE
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994)
Lithological description
Alternation of thick beds of red-brown, sandy clay- and siltstones, clear halite and white to pink anhydrite and carbonate beds. Evaporitic minerals are frequently present as nodules in the claystones. The original bedding lamination of the claystones is generally disturbed by displacive nodule growths and mudcracks (see Mijnlieff et al 2011, Appendix B).
Depositional setting
In the saline lake and its fringes which covered the basin center (Fryberger et al. 2011 and Gast et al. 2010).
Definition of lower boundary
Placed at the top of the Lower Silverpit Claystone Member, which is characterised by the absence of thick evaporite intervals.
Definition of upper boundary
Placed at the base of the Upper Silverpit Claystone Member, which is characterised by the absence of thick evaporite intervals.
Thickness indication
Up tp 715 m in G13-01.
Geographical distribution
Regional correlation
UK: Silverpit Evaporitic Member; GER: Elbe Sub-Group; BEL: -.
Age
Capitanian - Wuchiapingian.
Holostratotype
Well:
Depth (thickness) AH:
3258 - 3438 m (180 m)
Comments:
It is generally assumed that the halite beds were formed during dry periods. It is assumed that the basinward extent of the Slochteren Formation sandstone-tongues are also related to these dry periods. Therefore, for correlation purposes, the evaporite-rich intervals may be correlated with the Upper and/or Lower Slochteren member.
Hypostratotype
Well:
Depth (thickness) AH:
3384 - 3814 m (430 m)
Hypostratotype
Well:
Depth (thickness) AH:
3405 - 3587 m (182 m)
Origin of name
Name derived from the characteristic main lithology of this member.
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.
Fryberger,S., Knight,I.A., Hern,C., Moscariello,A., Kabel,S. 2011. Rotliegend facies, sedimentary provinces, and stratigraphy, Southern Permian Basin UK and Netherlands: A review with new observations. SEPM Special Publication, 98, 51-88.
Gast,R.E., Dusar,M., Breitkreuz,C., Gaupp,R., Schneider,J.W., Stemmerik,L., Geluk,M.C., Geißler,M., Kiersnowski,H., Glennie,K.W., Kabel,S., Jones,N.S. 2010. Rotliegend. EAGE Publications b.v., Houten, Chapter 7, 100-121.
Mijnlieff, H.F., Van Ojik, K., Nortier, J., Okkerman, J.A., Gaupp, R. & Grötsch, J. 2011. The Permian Rotliegend of the Netherlands: Core Atlas, Appendix B.
Cite as
TNO-GDN ([YEAR]). Silverpit Evaporite Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://acc.dinoloket.nl/en/stratigraphic-nomenclature/silverpit-evaporite-member.