Middle Holland Claystone Member

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

Grey and/or red-brown calcareous shaly claystone with distinctly lower carbonate content than the under- and overlying members. Contains some, thin, coarse clastic beds.

Depositional setting

Outer-neritic marine setting, where fines and minor carbonates settled.

Definition of lower boundary

The Lower Holland Marl Member, Holland Greensand Member or Spijkenisse Greensand Member underly the member. In elevated settings the Middle Holland Claystone Member can rest on older rocks.

Definition of upper boundary

If conformable overlain by Upper Holland Marl.

Thickness indication
50 - 100 m.
Geographical distribution
Regional correlation
UK: Carrack Formation; GER: ~Minden-Braunschweig-Gruppe; BEL: Hainaut Group.
Depth (thickness) AH:
2371 - 2384 m (13 m)
Depth (thickness) AH:
1279 - 1358 m (79 m)
Origin of name
Named after the Dutch province of Zuid-Holland.
Previous name(s)
Reviewed by (date)
Sander Houber (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..
NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.
Cite as
TNO-GDN ([YEAR]). Middle Holland 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/middle-holland-claystone-member.