Mélange de la Méchandeur

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Darstellung und Status

Farbe CMYK
(0%,0%,20%,2%)
Farbe RGB
R: 250 G: 250 B: 200
Rang
lithostratigraphische Formation
Gebrauch
Element ist in Gebrauch
Status
informeller Begriff

Nomenklatur

Deutsch
Méchandeur-Melange
Français
Mélange de la Méchandeur
Italiano
Mélange della Méchandeur
English
Méchandeur Mélange
Herkunft des Namens

Méchandeur (France) (voir aussi sur le géoportail de l'IGN)

Historische Varianten

schistes à blocs (Fudral 1998), grey schists (Antoine 1971, Loprieno 2001), formation de la Méchandeur = Méchandeur Formation = supra-Tarentaise wildflysch = Méchandeur flysch and wildflysch (Masson et al. 2008), Méchandeur Formation (Steck 2008)

Beschreibung

Mächtigkeit
20-80 m, généralement autour de 50 m (Masson et al. 2008).

Geografie

Typusregion
Vallée du Versoyen (France)

Referenzen

Erstdefinition
Masson Henri, Bussy François, Eichenberger Marc, Giroud Niels, Meilhac Caroline, Presniakov Sergei (2008) : Early Carboniferous age of the Versoyen ophiolites and consequences: non-existence of a “Valais ocean” (Lower Penninic, western Alps). Bull. Soc. géol. Fr. 179/4, 337-355

p.344: A flysch and a wildflysch are in principle two different things, but the interval between the Aroley limestone and the base of the Versoyen zone shows both types of rock associations more or less intimately linked, with lateral and vertical transitions from one to the other. This is why, at the present stage of research and for practical reasons, we group the flysch and the wildflysch into one single lithostratigraphic subdivision that we call the Méchandeur Formation. Its thickness is usually around 50 m, increasing sometimes up to 80 m and decreasing at other places to less than 20 m.

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