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Zona di Mergoscia
- Origine du nom
- Rang
- zone tectonique
- Statut
- terme informel
- Âge
- Paléozoïque - Mésozoïque
- En bref
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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.
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Scisti del Gaggio
- Origine du nom
- Rang
- Formation lithostratigraphique
- Statut
- terme informel
- En bref
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Micascisti eterogenei, a due miche con quarzo e plagioclasio, spesso a patina bruno-rossiccia.
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Gneiss di Mergoscia
- Origine du nom
- Rang
- Membre lithostratigraphique (Sous-formation)
- Unité hiérarchiquement supérieure
- Statut
- terme informel
- En bref
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Gneiss a biotite, feldspato alcalino ed oligoclasio, eterogeno a tessitura nodosa-venosa, a carattere migmatitico.