Nappe du Mont Chétif
Representation and status
- Color CMYK
- N/A
- Color RGB
- R: 241 G: 239 B: 237
- Rank
- mountainous massif
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Mont-Chétif-Decke
- Français
- Nappe du Mont Chétif
- Italiano
- Falda del Mont Chétif
- English
- Mont Chétif Nappe
- Origin of the Name
-
Mont Chétif (Italia), NW Courmayeur
- Historical Variants
-
massif du Mont Chétif (Argand 1911b), cuneo listrico Ultraelvetico del M. Chetif = cuneo del M. Chetif = scaglia del M. Chetif (Dal Piaz et al. 1992a), massif du Mont Chétif, Mont Chétif Nappe (Gouffon et al. 2024)
Description
- Description
-
Porphyroïdes permiens et sédiments calcaréo-arénacés liasiques (Pian Chercoui).
Age
- Age at top
-
- Early Jurassic
- Age at base
-
- Permian
Palaenography and tectonic
- Kind of protolith
-
- tectonic
References
- Definition
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.38: A band of sedimentary rocks overlies the sedimentary cover of the Internal Mont Blanc Massif from Saxon in the Rhône Valley up to south of the Mont Blanc summit. It seems to be autochthonous above the small Mont Chétif Massif in the Valle d’Aosta, so this crystalline basement and its sedimentary cover form the Mont Chétif Nappe. This nappe is assumed to be the root of the Wildhorn Nappe Complex situated north of the Rhône (Steck et al. 2001).