Code
RNMUU
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1994).
Lithological description
Dololmite-marl alternation with several decimetres thick peloidal-oolitic dolo-grain to packstones.
Depositional setting
Homoclinal carbonate ramp with storm influences.
Definition of lower boundary
Not yet defined.
Definition of upper boundary
Not yet defined.
Thickness indication
Varies around 50 m and reaches over 125 m in the Dutch Central Graben and the Ems Low.
Geographical distribution
Regional correlation
UK: Dowsing Formation; GER: Upper Muschelkalk Formation; BEL: Upper Muschelkalk Formation.
Age
late Anisian - early Ladinian.
Holostratotype
Well:
Depth (thickness) AH:
1367 - 1420 m (53 m)
Parastratotype
Well:
Depth (thickness) AH:
3368 - 3415 m (47 m)
Hypostratotype
Well:
Depth (thickness) AH:
1656 - 1706 m (50 m)
Origin of name
None.
Previous name(s)
None.
Reviewed by (date)
Johan ten Veen (2017).
References
NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1994. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section E, Triassic. Mededelingen Rijks Geologische Dienst, 50, 1-28.
Cite as
TNO-GDN ([YEAR]). Upper Muschelkalk Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://acc.dinoloket.nl/en/stratigraphic-nomenclature/upper-muschelkalk-member.