Code
NUBREI
Status
Formal (Van den Bosch et al. 1975).
Lithologische beschrijving
Stiff dark brown clay, micaceous and moderately silty. Layers of very fine glauconitic sand. Basal conglomerate with reworked macrofossils, clay balls and phosphorite concretions. Low carbonate content related to post-depositional dissolution.
Afzettingsmilieu
Warm delta base, delta front (Van den Berg et al. 2000).
Definitie ondergrens
Gradual transition into shallow-marine clay (Aalten Member, Breda Formation).
Definitie bovengrens
Erosional contact with shallow-marine sand (Zenderen Member, Breda Formation).
Dikte indicatie
Up to about 10 m.
Geografische verbreiding
Restricted to the eastern Netherlands, close to the German border.
Regionale correlatie
North Sea: not present; UK: not present; GER: ?; BEL: not present.
Ouderdom
middle - late Miocene.
Oorsprong naam
Named after the village of Eibergen in the eastern Netherlands.
Vorige benaming(en)
None.
Gereviewed door (datum)
Dirk Munsterman (2018).
Referenties
Van den Bosch, M., Cadée, M.C., Janssen, A.W. 1975. Lithostratigraphical and biostratigraphical subdivision of Tertiary deposits (Oligocene-Pliocene) in the Winterswijk-Almelo region (eastern part of The Netherlands). Scripta Geologica 29, 1-167.
Van den Berg, M.W., Van Houten, C.J., Den Otter, C. 2000. Toelichting bij de Geologische Kaart van Nederland 1 : 50 000, 34W, 34O/35.
Cite as
TNO-GDN ([YEAR]). Eibergen Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/eibergen-member.