Code
NUKIWA
Status
Formal (Westerhoff 2003).
Lithological description
White to light grey medium to very coarse sand, very gravelly (sporadic oolitic chert), partially lithified. Coarsening-upward sequences with poorly developed clay layers.
Depositional setting
Fluvial braidplain, partly marine at the base.
Definition of lower boundary
Basal quartz-rich sand (Waubach Sands, cf. Doppert et al. 1975). Sharp contact with shallow-marine sand and clay (Breda Formation) and with finer fluvial sand (Inden Formation).
Definition of upper boundary
Commonly exposed at the surface. Elsewhere, sharp contact with fluvial clay (Brunssum Member, Kieseloolite Formation).
Thickness indication
Up to about 110 m.
Geographical distribution
Southeastern Netherlands.
Regional correlation
North Sea: not present; UK: not present; GER: Hauptkies Member, Kieseloolith Formation; BEL: Donk Member, Mol Formation.
Age
late Miocene - early Pliocene.
Lectostratotype
Well:
Depth (thickness) AH:
128.7 - 167 m (38.3 m) below land surface
Origin of name
Named after the village of Waubach, close to the German border in the southeasternmost Netherlands.
Previous name(s)
Waubach Gravel, Waubach Sands (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.
Westerhoff, W.E. 2003. Beschrijving lithostratigrafische eenheid. Nederlands Instituut voor Toegepaste Geowetenschappen TNO. Utrecht.
Cite as
TNO-GDN ([YEAR]). Waubach Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/waubach-member.