Membre de Retzwiller

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Representation and status

Color CMYK
(0%,0%,0%,100%)
Color RGB
R: 250 G: 220 B: 130
Rank
lithostratigraphic Member (Subformation)
Validity
Unit is in Use
Status
valid formal name

Nomenclature

Deutsch
Retzwiller-Member
Français
Membre de Retzwiller
Italiano
Membro di Retzwiller
English
Retzwiller Member
Origin of the Name

Argilière de Retzwiller (France, Haut-Rhin), à l'ouest de Dannemarie

Historical Variants

Mergel von Dammerkirch (Andreae 1884), Sables et marnes de Dannemarie et Wolfersdorf (Meyer 1928), Retzwiller Member (Pirkenseer et al. 2018)

Description

Thickness
25 m à Retzwiller (Pirkenseer et al. 2018)

Components

Fossil Content
  • ostreids
  • ostracods
  • foraminifera

Mollusques marins d'eau peu profonde préservés in-situ (Roussé 2006), ostracodes et foraminifères benthiques. Occurence de foraminifères planctoniques remaniés (Crétacé tardif et Éocène).

Hierarchy and sequence

Subordinate units
Units at roof

Geography

Geographical extent
Présence locale (Retzwiller, Dornachbrugg) dans la partie méridionale du fossé du Haut-Rhin.

Palaenography and tectonic

Paleogeography
Rhine Graben
Tectonic unit (resp. main category)
Kind of protolith
  • sedimentary
Conditions of formation

Faciès d'eau calme.

References

Definition
Pirkenseer Claudius, Rauber Gaëtan, Roussé Stéphane (2018) : A revised Palaeogene lithostratigraphic framework for the Northern Swiss Jura and the Southern Upper Rhine Graben and its relationship to the North Alpine Foreland Basin. Riv. Italiana Pal. Strat. 124/1, 163–246

p.215: Dominated by massive grey marls to silty marls, with occasionally intercalated thin, strongly bioturbated bioclast or mollusc-bearing micaceous fine sand beds and small in-situ oyster bioherms (sensu Roussé 2006). In the Retzwiller section the thickness reaches about 25 m.
A historically well-known part is the thin fossil-rich sandstone (formerly called “Sables marins de Wolfersdorf ”) in the lower part of the member. The absence of this fossiliferous sandstone in the drilling Hirtzbach (10 km distant) has been mentioned in Vonderschmitt (1942), further highlighting the regional restriction of the members of the Wahlebach Fm.

  • Wolfersdorf-Sandstein

    Name Origin

    Wolfersdorf (France)

    Rank
    lithostratigraphic Bed
    Status
    local name (informal)
    In short

     

    Mince niveau gréseux fossilifère intercalé localement dans la partie inférieure du Membre de Retzwiller.

     

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