Neeroeteren Formation DCDN

 

Premise Unit, defined by Van Adrichem Boogaert and Kouwe (1995), therefor it has been incorporated in the lithostratigraphy of the Netherlands as a unit with the
Derivatio nominis Named after the Belgian (Campine) village of Neeroeteren, where the type well is situated (Renier (1944) Renier (1945) ; van Leckwijck (1957) ;Delmer (1958) ).
Type section Location map See figure (pdf)
  Well Neerheide
  Location N 51°03’54.3
E 05°41’19.0
  Depth 646 to 692 m
  Length 46 m along hole
Additional section Location map See figure (pdf)
  Well Gruitrode
  Location N 51°04’16.5
E 05°34’07.7
  Depth 770 to 967 m
  Length 197 m along hole
  Well Neerglabbeek
  Location N 51°05’53.0
E 05°37’48.0
  Depth 730 to 1030 m
  Length 300 m along hole
Definition Interval of thick, massive, white, coarse-grained to pebbly, arkosic sandstones with kaolinitic cement, interbedded with some variegated mudstone beds and rare coal seams. According to Scheere (1962) ; Scheere (1964) , Thorez () and Wouters (1989) , the sands consist of a mixture of reworked old sediments, epimetamorphic and fresh granitic fragments.
Upper Boundary In the Belgian type area, the formation is covered by the ‘Rode Gesteenten’ (= red rocks), a thin, unconformable, fringe succession of probable Permo-Triassic age. The Neeroeteren Formation grades into the uppermost part of the Hellevoetsluis Formation and the Strijen Formation towards the central-western part of the Campine Basin.
Lower Boundary The formation conformably overlies the Maurage Member in Belgium Paproth (1983) and the equivalent Kemperkoul Member in the Netherlands. The base is characterised by the abrupt upward transition of dark-coloured coal measures into massive, white sandstones. Seismic data and well-log correlations suggest a slight angular unconformity in the type area.
Correlation This unit is found along the central axis of the Campine Basin in the Campine Coal Basin, Belgium (Renier (1944) Renier (1945) ;Delmer (1958) ; Stockmans (1975) ;Bless (1977) ; Boonen (1985) ; Dusar (1981) ; Dusar (1968) ; Dusar (1987) ; Dusar (1989) , Wouters (1989) ). It has been defined in Belgian lithostratigraphy (van Leckwijck (1957) ; Paproth (1983) ) as a member of the Belgian Coal Measures Formation. Is expected to occur in the southeastern part in the province of Noord-Brabant. Therefore it has been incorporated in the lithostratigraphy of the Netherlands as a new unit with the status of formation, to make it fit into the presented framework.
Distribution The existence of this unit in the Netherlands has been inferred from its presence in the southern-central part of the Campine Basin in adjoining Belgium.
Age Westphalian D. The first occurrence of Neuropteris ovata, which defines the base Westphalian D, was encountered 80 m below the base of the formation in the type area (Boonen (1985) ; Dusar (1989) ).
Depositional Setting Deposited by a fluvial-fan system. Sandstones were deposited by braided fluvial channels and associated overbank sheet floods. The average transport direction was to the northwest. According to Wouters (1989) , the sandstones originally consisted predominantly of red beds. The reddish colours were reduced to white and grey during the chelation of organic matter at moderate burial depths. The variegated fines (hydromorphic soils) and intercalated coal seams indicate intermittent periods of poor flood-plain soil drainage.
References See References Upper Carboniferous

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