Scaglie del Varesotto
Retour à Écailles du VaresottoReprésentation et statut
- Couleur CMYK
- N/A
- Couleur RGB
- R: 241 G: 239 B: 237
- Rang
- écaille tectonique
- Usage
- Ce terme est en usage.
- Status
- valide
Nomenclature
- Deutsch
- Varesotto-Schuppen
- Français
- Écailles du Varesotto
- Italiano
- Scaglie del Varesotto
- English
- Varesotto Imbricates
- Variantes historiques
-
Varesotto Imbricates (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.108: The Mesozoic Lugano – Monte Grona – Val Grande fault system coincides with the change from thin-skinned to thick-skinned deformation in the South Alpine domain. In the absence of sedimentary decollement horizons, no ramp-flat geometries developed within the sedimentary formations; the Permian volcanics and Mesozoic sediments are autochthonous with respect to their crystalline basement. No plausible correlation with the tectonic units of the central South Alpine domain across the Lugano Fault is possible. The tectonic units below and in front of the Upper Orobic Nappe are called Varesotto Imbricates, in analogy to the Lower Orobic Imbricates. Between the Lago Maggiore and the Lugano Fault, Permian WSW– ENE trending transtensional and Early Mesozoic N – S trending extensional structures are reflected by rapid lateral changes in thickness and facies of cover successions (Bernoull i 1964, Kälin & Trümpy 1977). The Variscan basement of the Varesotto Imbricates is unconformably overlain by Permian volcanics and Mesozoic sediments.