Schill Grund Member

Formal (Van Adrichem Boogaert & Kouwe 1993). Amended (Munsterman et al. 2012).
Lithological description

Olive-grey to grey-brown claystones. The claystones are non- to slightly calcareous, silty to very fine sandy, locally slightly bituminous, micaceous and pyritic.

Depositional setting

Open-marine shelf conditions prevail, near-normally oxygenated basin-floor circumstances.

Definition of lower boundary

Conformably underlain by the glauconitic Scruff Greensand Formation (Stortemelk Member in the southern Central Graben and Terschelling Basin, e.g. well F18-02).

Definition of upper boundary

Coincides with the Berriasien-Valanginian boundary (Sequence 3 / Sequence 4 transition sensu Abbink et al. 2006). It is associated with the Late Kimmerian unconformity. Covered (sometimes virtually conformably) by sediments of the Rijnland Group (or the Chalk or Lower North Sea Group). Top is not always easy to pick on logs. Quite often, an intra Schill Grund ‘kick’ (Sequence 3) is mistaken for the base of the Rijnland Group (Sequence 4).

Thickness indication
Up to 150 m.
Geographical distribution
Regional correlation
UK: Humber Group; GER: ?; BEL: -.
late Berriasian.
Depth (thickness) AH:
2042 - 2079 m (37 m)
Origin of name
Named after the Schill Grund, a German name for the Scruff Bank in the North Sea.
Previous name(s)
Reviewed by (date)
Sander Houben (2017).
Abbink, O.A., Mijnlieff, H.F., Munsterman, D.K. & Verreussel, R.C.M.H. 2006. New stratigraphic insights in the ‘Late Jurassic’ of the Southern Central North Sea Graben and Terschelling Basin (Dutch Offshore) and related exploration potential. Netherlands Journal of Geosciences 85, 221-238.
Munsterman, D.K., Verreussel, R.M.C.H., Mijnlieff, H.F., Witmans, N., Kerstholt-Boegehold, S. & Abbink, O.A. 2012. Revision and update of the Callovian-Ryazanian Stratigraphic Nomenclature in the northern Dutch Offshore, i.e. Central Graben Subgroup and Scruff Group. Netherlands Journal of Geosciences-Geologie en Mijnbouw, 91 (4), 555-590.
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1993. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section G, Upper Jurassic and Lower Cretaceous. Mededelingen Rijks Geologische Dienst, 50, 1-80..
Cite as
TNO-GDN ([YEAR]). Schill Grund Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from