Code
KNNCE
Status
Formal (NAM & RGD 1980).
Lithologische beschrijving
Thin sequence of fossiliferous, dark-grey, silty to pebbly, micaceous, locally coaly, calcareous claystones, generally topped by a thin silt- or sandstone bed. The sediments often are ferruginous, and dispersed iron oolites are encountered.
Afzettingsmilieu
Lagoonal to open-marine deposition.
Definitie ondergrens
Conformably covers the Bentheim Sandstone Member of the Vlieland Sandstone Formation.
Definitie bovengrens
Unconformable with Westerbork Member, consequently the Ruinen Member can be very thin or even completely missing. Locally covered unconformably by the Holland Formation.
Dikte indicatie
10 - 20 m.
Geografische verbreiding
Regionale correlatie
UK: Valhall Formation; GER: ~Minden-Braunschweig-Gruppe; BEL: -.
Ouderdom
middle - late Valanginian.
Holostratotype
Well:
Depth (thickness) AH:
1121 - 1143 m (22 m)
Hypostratotype
Depth (thickness) AH:
1544 - 1555 m (11 m)
Oorsprong naam
Named after the village of Ruinen, in the province of Drenthe.
Vorige benaming(en)
None.
Gereviewed door (datum)
Sander Houben (2017).
Referenties
NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.
Cite as
TNO-GDN ([YEAR]). Ruinen Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/ruinen-member.