Weerdinge Member

NUAPWE

Formal (Bosch 2003).

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

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

Underlain by finer fluvial sand (Appelscha Formation).

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).

Up to about 20 m.

Not yet determined.

North Sea: ?; UK: not present; GER: not distinguished; BEL: not present.

Middle Pleistocene (Cromerian C).

Named after the village of Weerdinge in the northeastern Netherlands.

Mixing zone of the Urk Formation (Doppert et al. 1975).

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.