Weerdinge Member

Formal (Bosch 2003).
Lithological description

Grey to pale brown medium to very coarse sand, gravelly (including cobbles). Slightly glauconitic.

Depositional setting

Fluvioglacial (Lee et al. 2012) (easterly rivers sourced in central Germany).

Definition of lower boundary

Underlain by finer fluvial sand (Appelscha Formation).

Definition of upper boundary

Locally, sharp contact with fluvial clay and fine sand (Urk Formation). Elsewhere, more gradual transition into coarser fluvial sand (Urk Formation) or overlain by subglacial or ice-marginal sand (Peelo Formation).

Thickness indication
Up to about 20 m.
Geographical distribution
Not yet determined.
Regional correlation
North Sea: ?; UK: not present; GER: not distinguished; BEL: not present.
Middle Pleistocene (Cromerian C).
Type section
Not yet determined.
Depth (thickness) AH:
Not yet determined.
Origin of name
Named after the village of Weerdinge in the northeastern Netherlands.
Previous name(s)
Mixing zone of the Urk Formation (Doppert et al. 1975).
Reviewed by (date)
Wim Dubelaar (2018), Sytze van Heteren (2019).
Bosch, J.H.A. 2003. Beschrijving lithostratigrafische eenheid. Nederlands Instituut voor Toegepaste Geowetenschappen TNO. Utrecht.
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.
Lee, J.R., Busschers, F.S., Sejrup, H.P. 2012. Pre-Weichselian Quaternary glaciations of the British Isles, The Netherlands, Norway and adjacent marine areas south of 68 N: implications for long-term ice sheet development in northern Europe. Quaternary Science Reviews, 44, 213-228.
Cite as
TNO-GDN ([YEAR]). Weerdinge Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/weerdinge-member.