Kootwijk Member

Code
NUBXKO
Status
Formal (Schokker et al. 2005; Schokker et al. 2007).
Lithological description

Light grey to yellow fine to medium sand, non-calcareous, sporadic granule and organic detrital laminae.

Depositional setting

Aeolian (drift sand).

Definition of lower boundary

Generally, gradual transition into aeolian coversand (Wierden Member, Boxtel Formation). Sharp contact with palaeosol at the top of the Wierden Member.

Definition of upper boundary

Exposed at the surface.

Thickness indication
Up to 10 m.
Geographical distribution
Patchy in the eastern (Pleistocene) half of the Netherlands.
Regional correlation
North Sea: not present; UK: part of Britannia Catchments Group, cover loam and coversand (McMillan et al. 2011); GER: ?; BEL: Hechtel Formation, Kalmthout Member (Vernes et al. 2018).
Age
Holocene.
Type section
Well:
Not yet determined.
Depth (thickness) AH:
Not yet determined.
Origin of name
Named after the village of Kootwijk, in the central Netherlands.
Previous name(s)
Kootwijk Formation (Doppert et al. 1975).
Reviewed by (date)
Wim Dubelaar (2018), Sytze van Heteren (2019).
References
Doppert, J.W.Chr., Ruegg, G.H.J., Van Staalduinen, C.J., Zagwijn, W.H., Zandstra, J.G. 1975. Formaties van het Kwartair en Boven-Tertiair in Nederland. In: Zagwijn, W.H., Van Staalduinen, C.J. (eds.): Toelichting bij geologische overzichtskaarten van Nederland. Rijks Geologische Dienst, Haarlem, 11-56.
McMillan, A.A., Hamblin, R.J.O., Merritt, J.W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03, 343 p.
Schokker, J, De Lang, F.D., Weerts, H.J.T., Den Otter, C., Passchier, S. 2005. Beschrijving lithostratigrafische eenheid. Nederlands Instituut voor Toegepaste Geowetenschappen TNO. Utrecht.
Schokker, J., Weerts, H.J.T., Westerhoff, W.E., Berendsen, H.J.A., Den Otter, C. 2007. Introduction of the Boxtel Formation and implications for the Quaternary lithostratigraphy of the Netherlands. Netherlands Journal of Geosciences / Geologie en Mijnbouw, 86, 197-210.
Vernes, R.W., Deckers, J., Bakker, M.A.J., Bogemans, F., De Ceukelaire, M., Doornenbal, J.C., den Dulk, M., Dusar, M., Van Haren, T.F.M., Heyvaert, V.M.A., Kiden, P., Kruisselbrink, A.F., Lanckacker, T., Menkovic, A., Meyvis, B., Munsterman, D.K., Reindersma, R., ten Veen, J.H., van de Ven, T.J.M., Walstra, J., Witmans, N. 2018. Geologisch en hydrogeologisch 3D model van het Cenozoïcum van de Belgisch-Nederlandse grensstreek van Midden-Brabant / De Kempen (H3O – De Kempen). Studie uitgevoerd door VITO, TNO-Geologische Dienst Nederland en de Belgische Geologische Dienst in opdracht van Vlaams Planbureau voor Omgeving, Vlaamse Milieumaatschappij, TNO, Geologische Dienst Nederland, Nederlandse Provincie Noord-Brabant, Brabant Water, Programmabureau KRW/DHZ Maasregio.
Cite as
TNO-GDN ([YEAR]). Kootwijk Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/kootwijk-member.