Aerdenhout Member

Formal (Van Adrichem Boogaert & Kouwe 1993).
Lithological description

Sequence of rapidly alternating grey-brown, sandy claystones, siltstones, and fine-grained, light-grey sandstones, with common disseminated lignitic matter. Coal beds are scarce.

Depositional setting

Lower coastal-plain to fluvial-plain. Upwards, an increase of marine influence is seen. Fines settled on flood-plains and in small lakes. Sands were deposited by fluvial channels, crevasses, and lacustrine deltas. Swamps did not develop, or that they were eroded and reworked by fluvial processes.

Definition of lower boundary

Unconformable contact with the marine shales or sandy carbonates of the Altena Group.

Definition of upper boundary

Conformable contact with the clay-dominated Fourteens Claystone Member, which can generally be seen as a sharp upward increase in GR-log readings. The boundary is placed at the top of the last clear sandstone bed. In truncated settings, the top can be the unconformable contact with the Neomiodon Claystone Member, Rijnland, Chalk or Lower Noordzee Groups.

Thickness indication
Up to 181 m.
Geographical distribution
Regional correlation
UK: Humber Group; GER: ?; BEL: -.
early Kimmeridgian.
Depth (thickness) AH:
2110 - 2270 m (160 m)
Depth (thickness) AH:
2695 - 2808 m (113 m)
Depth (thickness) AH:
2122 - 2196 m (74 m)
Origin of name
Named after the village of Aerdenhout, in the south of the Dutch province of Noord-Holland.
Previous name(s)
Reviewed by (date)
Sander Houben (2017).
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]). Aerdenhout Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from