• Serie vulcano-detritica di Biella

    Origin of the Name

    Biella (Italia)

    Rank
    lithostratigraphic unit
    Status
    informal term
    Age
    Oligocene
    In short

    The Biella Volcanic Suite is an Oligocene volcano-sedimentary series covering the most internal portion of the Sesia Nappe along the Canavese Fault in the Biella region. These mostly calc-alkaline andesitic rocks were deposited onto an erosional surface of the Eclogitic Micaschist Unit of the Sesia Nappe 33–32 Ma ago.

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  • Favaro-Trachyandesit

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Age
    Palaeogene
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  • Falletti-Trachyandesit

    Origin of the Name

    Falletti (Italia), N Biella

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Age
    Palaeogene
    In short

    Coulées andésitique sommitale surmontant une série de tuffites.

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  • Bocchetto-Sessera-Trachyandesit

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Age
    Palaeogene
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