Formation de Turckheim

Torna a Alto Reno meridionale

Rappresentazione e statuto

Colore CMYK
(0%,10%,71%,6%)
Colore RGB
R: 240 G: 215 B: 70
Rango
Formazione litostratigrafica
Uso
Unità in uso.
Status
termine formale valido

Nomenclatura

Deutsch
Turckheim-Formation
Français
Formation de Turckheim
Italiano
Formazione di Turckheim
English
Turckheim Formation
Origine del nome

Turckheim (France, Haut-Rhin), à l'ouest de Colmar

Varianti storiche

Turckheim Formation (Pirkenseer et al. 2018)

Nota sul nome

Küstenkonglomerat-Formation (LGRB 2011, DSK 2016), Steingang (DSK 2002, Grimm 2005, Grimm et al. 2011b)

Descrizione

Potenza
Epaisseur affleurante de 5 à 60 m ; épaisseur cumulée totale de 200-300 m (Pirkenseer et al. 2018).

Età

Geomorfologia
  • primo Rupeliano
Età alla base
  • Priaboniano
Metodo di datazione

Micromammifères de la zone MP21 (Aufranc et al. 2016, Pirkenseer et al. 2018, Mojon et al.2018)

Geografia

Estensione geografica
Partie méridionale du fossé du Haut-Rhin.
Regione-tipo
Oberrhein-Graben

Paleogeografia e tettonica

Paleogeografia
Rheingraben
Termini generici
Tipo di origine
  • sedimentaria

Referenze

Definizione
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.179: The Turckheim Fm represents sediments related to moderate to high relief in the hinterland, resulting in grain sizes ranging from m-scale blocks (proximal) to arenites (distal) with occasional red to yellow clay and marl intercalations. The grain type ranges from unsorted irregular blocks to near-equally sized, well-rounded pebbles and sands. Pebbles and blocks may be encrusted by stromatolithic carbonates (Duringer 1988) or bound by biomineralisations (fig. 15). These conditions led to local deposits of lacustrine limestone nodules and “lenses” within the conglomerates (e.g. in the Ajoie; Schneider 1960). On the eastern and southern URG margin the conglomerates consist of middle and upper Jurassic components, whereas on the western URG shoulder either lower and middle Triassic or middle and upper Jurassic source rocks are dominant, partly including components of the Vosgian crystalline basement (Duringer 1988).

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