Lower Holland Marl Member

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

Grey and red-brown marl or calcareous, fissile claystone, frequently with intercalated bituminous claystone beds. In the West Netherlands Basin developed as fossiliferous, glauconitic and intensely bioturbated, greenish grey, silty to very silty or sandy, marls and claystones. Alternation of sandy/silty claystones and argillaceous sandstones along the basin edge in the southwesten Netherlands.

Depositional setting

Moderately- to fairly deep-marine setting (middle- to outer-neritic), where fines and carbonates settled. Bituminous deposits indicate periods of stagnant basin-floor circulation. Rare, thin sand layers were formed during storms.

Definition of lower boundary

Mildly unconformable with the Vlieland Claystone Formation or the De Lier Member. In halokinetically disturbed and very proximal onlap settings the interval can rest unconformably upon the Altena Group or older deposits.

Definition of upper boundary

Conformably or unconformably covered by the Middle Holland Claystone Member, Holland Greensand Member or Spijkenisse Greensand Member, which are easily recognised on log character.

Thickness indication
100 - 200 m.
Geographical distribution
Regional correlation
UK: Carrack and Valhall Formation; GER: Hedbergellen Marl, Fischschiefer and Blätterton sequence; BEL: -.
Age
Aptian - early Albian.
Holostratotype
Depth (thickness) AH:
2384 - 2403 m (19 m)
Parastratotype
Depth (thickness) AH:
1408 - 1580 m (172 m)
Hypostratotype
Depth (thickness) AH:
1824 - 1960 m (136 m)
Origin of name
Named after the Dutch province of Zuid-Holland.
Previous name(s)
None.
Reviewed by (date)
Sander Houben (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. 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]). Lower Holland Marl Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/lower-holland-marl-member.