Code
NUBRKA
Status
Formal (Zagwijn & Van Staalduinen 1975).
Lithological description
Yellowish green (unweathered) or greyish brown to yellowish brown (weathered) very fine to fine sand, moderately to very silty, glauconitic. Basal conglomerate with shark teeth.
Depositional setting
Warm shallow marine.
Definition of lower boundary
Sharp, unconformable contact with marine sand and clay (Rupel Formation; Van der Meulen et al. 2009).
Definition of upper boundary
Overlain by paralic sand (Heksenberg Member, Breda Formation).
Thickness indication
Up to about 45 m.
Geographical distribution
Restricted to the southeasternmost Netherlands.
Regional correlation
North Sea: not present; UK: not present; GER: ?; BEL: Berchem and Bolderberg Formations, Houthalen Member (Vernes et al. 2018).
Age
middle Miocene.
Type section
Well:
Not yet determined.
Depth (thickness) AH:
Not yet determined.
Origin of name
Named after the village of Kakert, close to the German border in the southeastern Netherlands.
Previous name(s)
None.
Reviewed by (date)
Dirk Munsterman (2018), Sytze van Heteren (2019).
References
Van der Meulen, M.J., Westerhoff, W.E., Menkovic, A., Gruijters, S.H.L.L., Dubelaar, C.W., Maljers, D. 2009. Silica sand resources in the Netherlands. Netherlands Journal of Geosciences 88, 147-160.
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.
Zagwijn, W.H. & Van Staalduinen, C.J. 1975. Toelichting bij geologische overzichtskaarten van Nederland, met bijbehorende 5 kaarten (1 : 600 000) en 3 overzichtsprofielen. Rijks Geologische Dienst, Haarlem.
Cite as
TNO-GDN ([YEAR]). Kakert Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/kakert-member.