Code
NUBEGE
Status
Formal (Westerhoff & Weerts 2003).
Lithological description
Medium to very coarse sand and coarse gravel, with cobbles, boulders and blocks. Local loam or clay, especially at the top, coarse sand lenses.
Depositional setting
Fluvial (western Meuse).
Definition of lower boundary
Sharp contact with various Neogene, Paleogene, Cretaceous and Paleozoic units. Locally incised into Valkenburg Member (Beegden Formation).
Definition of upper boundary
Locally exposed at the surface. Commonly, sharp contact with periglacial aeolian and local river loam and sand (Boxtel Formation). Locally incised by St. Pietersberg Member (Beegden Formation).
Thickness indication
Up to about 10 m.
Geographical distribution
Southeasternmost part of the Netherlands, along the Meuse river.
Regional correlation
North Sea: not present; UK: not present; GER: ?; BEL: ?
Age
early Pleistocene (Menapian – Bavelian).
Type section
Well:
Not yet determined.
Depth (thickness) AH:
Not yet determined.
Origin of name
Named after the village of Sint Geertruid, close to the Belgian border in the southeasternmost Netherlands.
Previous name(s)
St. Geertruid Deposits, Sterksel Formation (Felder & Bosch 1989).
Reviewed by (date)
Wim Dubelaar (2018), Sytze van Heteren (2019).
References
Felder, W.M., Bosch, P.W. 1989. Geologische kaart van Zuid-Limburg en omgeving. Afzettingen van de Maas. Rijks Geologische Dienst, Haarlem.
Westerhof, W.E., Weerts, H.J.T. 2003. Beschrijving lithostratigrafische eenheid. Nederlands Instituut voor Toegepaste Geowetenschappen TNO. Utrecht.
Cite as
TNO-GDN ([YEAR]). St. Geertruid Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://acc.dinoloket.nl/en/stratigraphic-nomenclature/st-geertruid-member.