Oosterdok Bed

Formal (Bakker et al. 2003).
Lithological description

(Dark) grey to (dark) brown silty clay (varved, calcareous, stiff), with local laminae of very fine to medium, calcareous sand. Local glauconite, shells and dropstones. Slump structures and loadcasts.

Depositional setting

Glaciolacustrine (ice-proximal to ice-distal, with turbidity currents (Jelgersma & Breeuwer 1975).

Definition of lower boundary

Generally sharp contact with mostly gravelly fluvial sand.

Definition of upper boundary

Gradual transition into non-varved clay (Uitdam Member, undifferentiated).

Thickness indication
Less than 60 m.
Geographical distribution
Glacial basins in the central Netherlands.
Regional correlation
North Sea: part of Cleaver Bank Formation (defined and mapped in conjunction with the British Geological Survey; Laban 1995); UK: part of Wolston Glacigenic Formation (McMillan et al. 2011); GER?; BEL: not present.
late Middle Pleistocene (Late Saalian).
B25E0254 (Oosterdok)
Depth (thickness) AH:
47.15 - 57.60 m (10.45 m) below land surface
Origin of name
Named after a borough in the east of Amsterdam.
Previous name(s)
Reviewed by (date)
Wim Dubelaar (2018), Sytze van Heteren (2019).
Bakker, M.A.J., Den Otter, C. Weerts, H.J.T. 2003. Beschrijving lithostratigrafische eenheid. Nederlands Instituut voor Toegepaste Geowetenschappen TNO. Utrecht.
De Gans, W., De Groot, Th., Zwaan, H. 1987. The Amsterdam basin, a case study of a glacial basin in The Netherlands. In: Van der Meer, J.J.M. (ed.): Tills and Glaciotectonics, 205-216.
Jelgersma, S., Breeuwer, J.B. 1975. Toelichting bij de kaart Glaciale Verschijnselen gedurende het Saalien, 1:600.000. In: Zagwijn, W.H., Van Staalduinen, C.J. (eds.): Toelichting bij de Geologische Overzichtskaarten van Nederland. Rijks Geologische Dienst, Haarlem.
Laban, C. 1995. The Pleistocene glaciations in the Dutch sector of the North Sea. A synthesis of sedimentary and seismic data. PhD Thesis, University of Amsterdam, 194 p.
McMillan, A.A., Hamblin, R.J.O., Merritt, J.W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. British Geological Survey Research Report, RR/10/03, 343 p.
Cite as
TNO-GDN ([YEAR]). Oosterdok Bed. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/oosterdok-bed.