• Falda Orobica superiore

    Origine du nom

    Alpi Orobie = Bergamasker Alpen

    Rang
    nappe
    Statut
    valide
    En bref

    The Upper Orobic Nappe is the uppermost and oldest thin-skinned thrust sheets of the eastern South Alpine domain. It consists of an around 5 to 7 km thick basement sheet, arranged in a series of en-échelon anticlines. The thrusts associated with the Upper Orobic Nappe ramped into the sedimentary cover, creating several duplexes that occur in a belt of klippes. The distribution of these erosional remnants reflects the later deformation by the basement ramps of the underlying younger local thrust sheets and imbricates (Lower Orobic Imbricates).

  • Zona della Val Colla

    Origine du nom

    Val Colla (TI)

    Rang
    zone tectonique
    Âge
    En bref

    The Val Colla Zone is a Variscan tectonic unit representing, together with part of the Strona-Ceneri Zone, the basement of the Upper Orobic Nappe. It consists mainly of paragneisses, hornblende-epidote schists and metagranites. These Variscan, originally amphibolite-facies metamorphic rocks, were retrogressed to the greenschist facies, possibly during Mesozoic rifting and associated exhumation of the basement rocks.

    • Gneiss del San Bernardo

      Name Origin

      Kirchhügel San Bernardo (TI) 5 km nördlich Lugano

      Rang
      Formation lithostratigraphique
      Statut
      terme informel
      En bref

      Ortogneiss chiaro a feldspato alcalino e muscovite.

      Age
      Ordovicien
    • Gneiss dello Stabbiello

      Name Origin

      Monte Stabbiello (TI)/(Italia), auf dem Grenzkamm ca. 7 km SW Joriopass

      Rang
      Formation lithostratigraphique
      Statut
      terme informel
      En bref
      Gneiss sericitico grigio-chiaro fino ad ocsuro, scistoso, disordinamente pieghettato.
      Age
      Protérozoïque
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