Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1997).
Greenish to brownish grey, silty, calcareous clay to marl.
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.
Origin of name
Named after Brussels, the capital of Belgium, and the prevailing lithology.
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.
TNO-GDN ([YEAR]). Brussels Marl Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/brussels-marl-member.