Z5 (Ohre) Formation

Formal (Van Adrichem Boogaert & Kouwe 1994).
Lithological description

Claystone and rock salt.

Depositional setting

Salina in the deepest parts of the basin, sabkha in the marginal parts (Geluk 2005; 2007; Geluk et al. 1997).

Definition of lower boundary

Placed at the base of the claystone underlying the rock salt. This claystone usually is the third claystone peak above the potassium-magnesium rich salt bed of the Z4 Salt Member.

Definition of upper boundary

Placed at the top of the rock salt and constitutes the contact with the Zechstein Upper Claystone Formation.

Thickness indication
Up to 25 m (Q02-06-S1).
Geographical distribution
Regional correlation
UK: Z5 Group; GER: Ohre Folge (Z5); BEL: Z5 (Ohre) Formation.
Depth (thickness) AH:
4017 - 4036 m (19 m)
Origin of name
Name derived from the German stratigraphic nomenclature, where it was introduced by Reichenbach (1970).
Previous name(s)
Reviewed by (date)
Mark Geluk (2017).
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1994. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section D, Permian. Mededelingen Rijks Geologische Dienst, 50, 1-42.
Reichenbach, W. 1970. Die lithologische Gliederung der rezessiven Folgen von Zechstein Z5 und ihr Beckenausbildung. Problemen der Grenzziehung und Parallelisierung. Ber. dt. Ges. geol. Wiss., A, Geol. Paläont., 15, 555-563.
Geluk, M.C., Van Wees, J.D., Grönloh, H., Van Adrichem Boogaert, A.B. 1997. Palaeogeography and paleotectonics of the Zechstein Group (Upper Permian) in the Netherlands. Proceedings of the XIII International Congress on the Carboniferous and Permian, 28th August-2nd September 1995, Krakow, Poland. Prace Panstwowego Instytut Geologicznego CLVII, part 2, 63-75.
Geluk, M.C. 2005. Stratigraphy and tectonics of Permo-Triassic basins in the Netherlands and surrounding areas. PhD Thesis, Utrecht University, 171 p.
Geluk, M.C. 2007. Permian. In: Wong, T.E., Batjes, D.A.J., De Jager, J. (Eds): Geology of the Netherlands. Royal Netherlands Academy of Arts and Sciences (KNAW) (Amsterdam), 63-84.
Cite as
TNO-GDN ([YEAR]). Z5 (Ohre) Formation. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/z5-ohre-formation.