Brussels Marl Member NLFFM

 

Premise Originally defined by NAM and RGD (1980) .
Derivatio nominis Named after Brussels, the capital of Belgium, and the prevailing lithology.
Type section Location map See figure (pdf)
  Well L02-04 (pdf)
  Location N 53°51'22.2
E 04°38'59.2
  Depth 1035 to 1099 m
  Length 64 m along hole
  Reference NAM and RGD (1980)
Definition Greenish to brownish grey, silty, calcareous clay to marl. The unit is the distal equivalent of the Brussels Sandstone Member.
Upper Boundary The member can be distinguished from the under- and overlying clays on wire-line logs by its higher resistivity and acoustic velocity expressions, and its lower gamma-ray readings.
Lower Boundary The member can be distinguished from the under- and overlying clays on wire-line logs by its higher resistivity and acoustic velocity expressions, and its lower gamma-ray readings.
Distribution The unit occurs in the northern- to northwesternmost part of the Netherlands and the adjacent offshore area. Laterally, it grades into the Brussels Sandstone Member towards the proximal part of the basin. The boundary with the latter is rather arbitrary. Further into the basin the member grades into clay and is considered part of the Dongen Clay Member (see paragraph 2.2 under Subdivision).
Age Middle Eocene.
Depositional Setting Marine deposit, outer neritic.
References See References Tertiary

Van Adrichem Boogaert, H.A. & Kouwe, W.F.P., 1993-1997. [Stratigraphic unit]. In: Stratigraphic Nomenclature of the Netherlands.
Retrieved [Datum] from [url].