Nieuwolda Member

Formal (Ebbing 2003).
Lithological description

Grey to brownish black or black clay (red where exposed), (very) firm, silty or sandy, commonly highly calcareous and micaceous, sporadic in situ shells. Climbing ripples, slump structures.

Depositional setting

Ice-marginal lacustrine, glaciomarine with clear water.

Definition of lower boundary

Sharp contact with fluvial sand (Appelscha and Peize Formations;, Veenhuizen Member, Urk Formation) and, where deeply incised, with shallow-marine pre-Quaternary units.

Definition of upper boundary

Locally exposed at the surface. Elsewhere, sharp contact with fluvial sand (Tynje Member, Urk Formation), glacial sand and till (Drente Formation), marine sand and clay (Eem Formation), periglacial sand (Drachten and Boxtel Formations), tidal sand and clay (Naaldwijk Formation) or modern marine sand (Southern Bight Formation).

Thickness indication
Highly variable. Up to 400 m in filled glacial valleys.
Geographical distribution
Elongate valley fills, mainly north-south, in the northern Netherlands and the northern half of Dutch North Sea.
Regional correlation
North Sea: upper part of the Swarte Bank Formation (defined and mapped in conjunction with the British Geological Survey; Cameron et al. 1986); UK: part of the Lowestoft Formation (McMillan et al. 2011); GER: Lauenburger Ton (Kuster & Meyer 1979); BEL: not present.
Middle Pleistocene (Elsterian).
B07H0080 (Nieuwolda)
Depth (thickness) AH:
19.50 - ≥175 m (>155 m) below land surface
Origin of name
Named after a village in the northeastern Netherlands.
Previous name(s)
Potclay Formation (Van der Heide & Zagwijn 1967).
Reviewed by (date)
Wim Dubelaar (2018), Sytze van Heteren (2019).
Cameron, T.D.J., Laban, C., Mesdag, C.M. & Schüttenhelm, R.T.E. 1986. Indefatigable, Sheet 53°N/02°E. Quaternary Geology, 1 : 250 000 Series, British Geological Survey and Geological Survey of the Netherlands.
Ebbing, J.H.J. 2003. Beschrijving lithostratigrafische eenheid. Nederlands Instituut voor Toegepaste Geowetenschappen TNO. Utrecht.
Kuster, H., Meyer, K.D. 1979. Glaziäre Rinnen im mittleren und nord-ostlichen Niedersachsen. Eiszeitalter und Gegenwart 29, 135-156.
Cite as
TNO-GDN ([YEAR]). Nieuwolda Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from