IJsselmonde Claystone Member

Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1993).
Lithological description

Thin interval of light- to dark-grey, silty to fine-grained sandy, often marly claystone with open-marine to lagoonal fauna and flora. Thin argillaceous sand beds are intercalated.

Depositional setting

Marginal- to open-marine environment.

Definition of lower boundary

With the fine-grained paralic (Rodenrijs Claystone Member) and fluvial deposits of the Nieuwerkerk Formation, is sharp.

Definition of upper boundary

With the IJsselmonde Sandstone Member of the Vlieland Sandstone Formation, is gradual, but placed at the base of the massive sandstone.

Thickness indication
Up to 85 m.
Geographical distribution
Regional correlation
UK: Valhall Formation; GER: ~Minden-Braunschweig-Gruppe; BEL: -.
middle Barremian.
Depth (thickness) AH:
1216 - 1234 m (18 m)
Origin of name
Named after the former village of IJsselmonde, currently incorporated into Rotterdam.
Previous name(s)
Reviewed by (date)
Sander Houben (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. 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]). IJsselmonde Claystone Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/ijsselmonde-claystone-member.