• Falda di Suretta

    Origine du nom

    Surettahorn (GR)

    Rang
    nappe
    Statut
    valide
    En bref

    The Suretta Nappe is a Middle Penninic tectonic unit of eastern Switzerland made up of a Paleozoic basement of para- and orthogneisses intruded by the Permian Rofna Porphyry Complex, which consists of granitoids and effusive-type magmatites. Its Permian–Mesozoic cover, in Briançonnais facies, is largely of Triassic age. Locally the Triassic is overlain by Jurassic breccias. This cover crops out as thin layers; in one instance it follows a Suretta internal thrust fault, in other instances they are infolded into narrow synclines that were subsequently backfolded in the upper limb of the north facing Niemet-Beverin Backfold, whose axial trace runs across the Suretta Nappe.

    Remarques nomenclatoriales

    cf. Marquer et al. 1994, Marquer & Peucat 1994

    • Finestre di Lanzada

      Name Origin

      Lanzada (Valmalenco, Italia)

      Rang
      fenêtre
      Statut
      terme informel
      En bref

      The Lanzada Fensters, in the Val Malenco, are two small tectonic windows dominated by sedimentary rocks typical for the Suretta Nappe and surrounded by the Malenco-Forno-Lizun Nappe. These windows also expose some small occurrences of metagabbro and ultramafics that are correlated with the Avers Nappe.

  • Starlera-Decke

    Origine du nom

    Piz Starlera (GR)

    Rang
    nappe
    Statut
    terme informel
    Âge
    Trias
    En bref

    Allochthoner Teil der Sedimentbedeckung der Tambo-Suretta-Decken.

  • Mesozoische Sedimentbedekcung der Suretta-Decke

    Rang
    unité cartographique composite (regroupement)
    Statut
    terme informel
  • kristallines Grundgebirge der Suretta-Decke

    Rang
    unité cartographique composite (regroupement)
    Statut
    terme informel
    • Roffna-Gneis

      Name Origin

      Rofla = Roffna-Schlucht (GR) bei Sufers (Hinterrheintal)

      Rang
      Formation lithostratigraphique
      Statut
      terme informel
      En bref

      Variszischer porpyhrischer Metagranit (Alkalifeldspatgneis) der Suretta-Decke.

      Age
      Carbonifère précoce (= Mississipien)
      • Andeer-Granit

        Name Origin

        Andeer (GR)

        Rang
        unité lithostratigraphique
        Statut
        terme local (informel)
        En bref

        Lokal weniger deformierte Fazies des variszischen Granitporphyrs der Suretta-Decke von holokristallinporphyrischer Struktur und massiger Textur: grüner porphyrischer Granit bzw. grüner Serizitgneis.

        Age
        Carbonifère précoce (= Mississipien)
    • Timun-Gneiskomplex

      Name Origin

      Piz Timun (GR)

      Rang
      Groupe lithostratigraphique
      Statut
      terme informel
      Nomenclatorial Remarks
      <p>Blanc 1965</p>
      En bref

      Heterogener Altkristallin der Suretta- und Tambo-Decke: Chlorit-Serizit-Schiefer, schieferiger Gneis, grauer Augengneis, Amphibolit, usw.

haute de page