Brèche du Collet des Rousses
Zurück zu Calcschistes du Petit St-BernardDarstellung und Status
- Farbe CMYK
- (0%,0%,0%,100%)
- Rang
- lithostratigraphische Formation
- Gebrauch
- Element ist in Gebrauch
- Status
- lokaler Begriff (informell)
Nomenklatur
- Deutsch
- Collet-des-Rousses-Konglomerat
- Français
- Brèche du Collet des Rousses
- Historische Varianten
- Brèche du Collet des Rousses (Loubat 1968 et 1975, Antoine 1971, Fügenschuh et al. 1999, Loprieno 2001), Collet des Rousses conglomerate (Masson et al. 2008)
Hierarchie und Abfolge
- Hangendes
Alter
- Alter Top
-
- Mittlerer Jura
- Bermerkungen zu Top
- Dogger (Antoine 1971) or pre-Barremian (Loprieno 2001)
- Alter Basis
-
- Toarcien
- Bermerkungen zu Basis
- Late Liassic
- Datierungsmethode
- Bélemnites
Paläogeografie und Tektonik
- Paläogeografie
- Valais-Ozean
- Tektonische Einheit (bzw. Überbegriff)
Referenzen
- Neubearbeitung
-
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.341: The base of the calcschists is often characterized by one or several dm- to dam-thick layers of conglomerate, first described by Schoeller [1929] and called by Loubat [1968] and Antoine [1971] the “Collet des Rousses conglomerate”. They are formed by rounded or angular, poorly sorted, cm to dm-large pebbles, mainly limestones, in an abundant matrix that varies from a calcareous sandstone to a sandy limestone. They represent debris flows and gradually pass upwards to the normal PSB calcschists by decreasing abundance and granulometry of the detrital content. These basal layers also contain Liassic belemnites.
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