Brussels Marl Member

Code
NLDOBM
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1997).
Lithological description

Greenish to brownish grey, silty, calcareous clay to marl.

Depositional setting

Marine deposit, outer neritic. The unit is the distal equivalent of the Brussels Sandstone Member.

Definition of lower boundary

Can be distinguished from the underlying clay (Ieper Member and/or interfingering Engelschhoek Member) on wire-line logs by its higher resistivity and acoustic velocity expressions, and its lower gamma-ray readings.

Definition of upper boundary

Can be distinguished from the overlying clay (Asse Member, and/or interfingering Engelschhoek Member) on wire-line logs by its higher resistivity and acoustic velocity expressions, and its lower gamma-ray readings.

Thickness indication
Up to 750 m.
Geographical distribution
Regional correlation
UK: ?; GER: ?; BEL: ?
Age
middle Eocene.
Holostratotype
Depth (thickness) AH:
1035 - 1099 m AH (64 m)
Origin of name
Named after Brussels, the capital of Belgium, and the prevailing lithology.
Previous name(s)
None.
Reviewed by (date)
Geert-Jan Vis (2019).
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. 1997. Stratigraphic nomenclature of The Netherlands, revision and update by RGD and NOGEPA, Section I, Tertiary. Mededelingen Rijks Geologische Dienst, 50, 1-39.
Cite as
TNO-GDN ([YEAR]). Brussels 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/brussels-marl-member.