• Zona dell'Isorno

    Origin of the Name

    Bassa Valle dell'Isorno (Italia), Crevadossola [non: Fiume Isorno (TI), Valle Onsernone]

    Rank
    tectonic zone
    Status
    local name (informal)
    In short

    The Isorno Zone (Western Lepontic) corresponds to the Bosco and Bombogno zones in the southern part of the eastern (upper) limb of the large polyphase Alpe Bosa-Wandfluhhorn Fold (located between the Maggia and Antigorio valleys), where these two zones cannot be distinguished. It consists of a very heterogeneous series of para- and orthogneisses, amphibolites, meta-gabbros, ultramafites, calc-schists and marbles that underwent an Oligocene amphibolite facies metamorphism.

  • Peridotite della Cima d'Agaro

    Origin of the Name

    Cima d'Agaro (Italia), Valle dell'Isorno

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    In short

    Corps ultramafique de la Zone de l'Isorno, resp. de la Zone du Bombogno.

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