External Lower Penninic of Central Switzerland
Représentation et statut
- Couleur RGB
- R: 239 G: 237 B: 235
- Rang
- sous-domaine tectonique
- Usage
- Ce terme n'est pas en usage.
- Status
- terme local (informel)
Nomenclature
- Deutsch
- Externes Unterpenninikum der Zentralschweiz
- Français
- Pennique Inférieur externe de Suisse centrale
- Italiano
- Pennidico Inferiore esterno della Svizzera centrale
- English
- External Lower Penninic of Central Switzerland
- Variantes historiques
-
Lower Penninic of Central and Eastern Switzerland (TK500 / Gouffon et al. 2024)
Paléogéographie et tectonique
- Termes génériques
- Type de protolithe
-
- tectonique
- Métamorphisme
- non métamorphique
Références
- Révision
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.71: The Lower Penninic subdomain of central and eastern Switzerland is represented by flysch nappes of controversial origin in the external part of the Alps and essentially by metasedimentary, mostly shaly-calcareous units (so called “Bündnerschiefer”) further south, deposited in the oceanic Valaisan Basin. Ophiolitic remnants are found at the base of some of the “Bündnerschiefer-type” nappes. The Chiavenna Nappe is a large ophiolitic slice found below the Middle Penninic Tambo Nappe and against the Gruf Complex, and thus considered as a remnant of the Valaisan oceanic crust. Lower Penninic sediment units form the Prättigau Half-Window and the core of the Lower Engadine Window.