Code
NUBXBS
Status
Formal (Schokker et al. 2005; Schokker et al. 2007).
Lithologische beschrijving
Stiff brownish grey to brownish green loam, sandy, with intercalated light brown very fine to medium sand, silty, non-calcareous, rooted. Local peat layers.
Afzettingsmilieu
Fluvial floodplain (Meuse), aeolian and small-scale fluvial.
Definitie ondergrens
Usually a sharp contact with underlying fine to moderately coarse-grained sand of the Boxtel Formation.
Definitie bovengrens
Usually, sharp contact with fine to medium sand of the Boxtel Formation (undifferentiated) or with coarser fluvial and fluvioglacial deposits (e.g. Koewacht Formation, Kreftenheye Formation, Sterksel Formation, Waalre Formation and Drente Formation).
Dikte indicatie
Generally 4-6 m, up to 10 m.
Geografische verbreiding
Northern part of the Roer Valley Graben in the southeastern Netherlands.
Regionale correlatie
North Sea: not present; UK: not present; GER: ?; BEL: ?
Ouderdom
Presumably late Middle Pleistocene (Saalian) or older.
Holostratotype
Well:
B51B0301 (Best-Ekkerswijer)
Depth (thickness) AH:
22.01 - 28.05 m (6.04 m) below land surface
Comments:
Schokker et al. (2007).
Oorsprong naam
Named after the village of Best, in the southern Netherlands.
Vorige benaming(en)
None.
Gereviewed door (datum)
Wim Dubelaar (2018), Sytze van Heteren (2019).
Referenties
Schokker, J, De Lang, F.D., Weerts, H.J.T., Den Otter, C., Passchier, S. 2005. Beschrijving lithostratigrafische eenheid. Nederlands Instituut voor Toegepaste Geowetenschappen TNO. Utrecht.
Schokker, J., Weerts, H.J.T., Westerhoff, W.E., Berendsen, H.J.A., Den Otter, C. 2007. Introduction of the Boxtel Formation and implications for the Quaternary lithostratigraphy of the Netherlands. Netherlands Journal of Geosciences / Geologie en Mijnbouw, 86, 197-210.
Cite as
TNO-GDN ([YEAR]). Best Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/best-member.