Complesso di falde di Antigorio
Retour à Complexe de nappes d'AntigorioReprésentation et statut
- Couleur RGB
- R: 241 G: 239 B: 237
- Rang
- complexe de nappes
- Usage
- Ce terme est en usage.
- Status
- valide
Nomenclature
- Deutsch
- Antigorio-Deckenkomplex
- Français
- Complexe de nappes d'Antigorio
- Italiano
- Complesso di falde di Antigorio
- English
- Antigorio Nappe Complex
Hiérarchie et succession
- Unités hiérarchiquement subordonnées
Géographie
- Extension géographique
- [kommt auf den GA25-Blättern 034_Basodino, 061_Simplon, 145_Greina, 159_Locarno, sowie XXX_Binntal, XXX_Comologno und XXX_Maggia vor]
Paléogéographie et tectonique
- Termes génériques
- Type de protolithe
-
- tectonique
- Métamorphisme
- métamorphe
Références
- Définition
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.47: The Antigorio Nappe and the Mergoscia Zone have been grouped under the term Antigorio Nappe Complex because the boundary between the two is not clear and has been defined differently by the authors (e.g., Burri 2005, Berger & Mercolli 2006, Pfeifer et al. 2018). Furthermore, this boundary is completely unidentifiable in the Southern Steep Belt (or “root zone” north of the Tonale Fault), where the rocks of each of these units are no longer recognizable due to their migmatization. In addition, isoclinal folds parallel to the schistosity affect the contact between these two units.
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Falda di Antigorio
- Name Origin
- Rang
- nappe
- Statut
- valide
- En bref
-
The Antigorio Nappe is a tectonic nappe of the Western Lepontic (Toce Culimnation) consisting mainly of Variscan granitoids. In its northwestern part, this basement is surrounded by an autochthonous Mesozoic–Paleogene sedimentary cover, which could be connected to the cover of the Verampio Nappe via an early thrust syncline. Late folding is responsible for two multi-kilometer-scale isoclinal structures: the Alpe Bosa-Wandfluhhorn fold and the Ziccher fold.
- Age
- Cisuralien (= Permien précoce)
-
zona della Pioda di Crana
- Name Origin
-
Pioda di Crana (Italia), Valle Vigezzo
- Rang
- unité lithostratigraphique délimitée tectoniquement
- Statut
- terme informel
- En bref
-
Denominazione della falda di Antigorio nel fianco superiore della grande struttura Wandfluhhorn-Bosa.
- Age
- Carbonifère tardif (= Pennsylvanien)
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Zona di Mergoscia
- Name Origin
- Rang
- zone tectonique
- Statut
- terme informel
- En bref
-
The Mergoscia Zone is a heterogeneous tectonic unit of the Western Lepontic (Toce Culimnation). It is composed of ortho- and paragneisses, metapelites, calcschists, metabasites and meta-ultrabasites. Both metabasites and meta-ultrabasites contain rare relics of high-pressure metamorphism (retrogressed eclogites and garnet-metaperidotites). This zone, displaying a high degree of deformation, is also interpreted as a mélange rather than as an originally stratified framework.
- Age
- Paléozoïque