Formal (Van Adrichem Boogaert & Kouwe 1997).
In the southeastern Netherlands the unit consists of two to three coarsening-upward successions. The basal one is a small-scale alternation of hard siltstone and claystone layers, capped by a thin layer of clean sand. The upper unit has a sandier character with again a relatively clean thin sand at the top. The sands may be very fine (105-150 µm) and locally indurated into sandstone. The calcium-carbonate content decreases upwards, while the glauconite content increases in that direction. The colour varies from light grey to dark green.
Most likely the distal marine expression of a northward prograding deltaic system. The initial water depth might have been approximately 100 m and shallowing upwards. This corresponds with a probably NW-SE oriented deltaic lobe (perpendicular to the palaeo-coastline), which thins northwards.
Definition of lower boundary
Somewhat gradual transition to the underlying Liessel Member.
Definition of upper boundary
Conformable or slightly unconfomable contact with the overlying Oosteind Member; may be rather indistinct. However, the upper part of the Reusel Member is a coarsening-upward succession of, generally, more argillaceous, small-scale alternation of sand and clay layers with higher gamma-ray readings opposed to the clean, washed-out, fining-upwards Oosteind Member with very low gamma-ray readings.
UK: Lista Formation; GER: Landen Formation; BEL: succession ranging from the Halen Member (base) to the Grandglise Member (top) of the Hannut Formation (Marechal & Laga 1988).
late Paleocene (Thanetian).
Origin of name
Named after the village of Reusel in the province of Noord-Brabant, in the vicinity of the type well.
Erroneously interpreted as Ieper Clay Member (NAM & RGD 1980).
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.
Maréchal, R., Laga, P. (eds.) 1988. Voorstel lithostratigrafische indeling van het Paleogeen - Nationale Commissies voor Stratigrafie. Commissie: Tertiair, Belgische Geologische Dienst, Brussel, 208 p.
NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.
TNO-GDN ([YEAR]). Reusel Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/reusel-member.