• Falda Malenco-Forno-Lizun

    Rank
    nappe
    Status
    valid
    In short

    The Malenco-Forno-Lizun Nappe is an Upper Penninic tectonic unit of eastern Switzerland encompassing three units situated in adjacent areas (in the hangingwall of the Turba Normal Fault) but with distinct lithological assemblages of oceanic origin.

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  • Piz-Lizun-Einheit

    Origin of the Name

    Piz Lizun (GR)

    Rank
    tectonic unit
    Status
    local name (informal)
    In short

    Within the Upper Penninic Malenco-Forno-Lizun Nappe, the Lizun unit is situated northwest of the Engadine Fault and is sinistrally offset from the Forno unit. It exposes rocks of oceanic origin similar to those of this latter unit (i.e. metabasalts and metagabbros of oceanic origin covered by metasedimentary rocks of Jurassic to Early Cretaceous age).

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    • Metabasalt der Piz-Lizun-Einheit

      Rank
      petrographic facies
      Status
      informal term
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    • Metagabbro der Piz-Lizunh-Einheit

      Rank
      petrographic facies
      Status
      informal term
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    • Serpentinit der Piz-Lizun-Einheit

      Rank
      petrographic facies
      Status
      informal term
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  • Unità del Monte del Forno

    Origin of the Name

    Monte del Forno (GR)/(Italia)

    Rank
    tectonically bounded lithostratigraphic unit
    Status
    informal term
    In short

    Within the Upper Penninic Malenco-Forno-Lizun Nappe, the Forno unit is situated southeast of the Engadine Fault and is sinistrally offset from the Lizun unit. It consists of metabasalts and metagabbros of oceanic origin covered by metasedimentary rocks of Jurassic to Early Cretaceous age, which are in direct contact with the roof of the Bregaglia Intrusion.

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    • Quarziti del Muretto

      Name Origin

      Val Muretto (GR), östlich des Malojapasses

      Rank
      lithostratigraphic Formation
      Status
      informal term
      In short

      Schistes quartzeux à diopside et plagioclase (bytownite). Le protolithe devait être une arkose à matrice argileuse et ciment carbonaté (Mützenberg 1986).

      Age
      Late Cretaceous
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    • Formazione dei Rossi

      Name Origin

      I Rossi (GR)

      Rank
      lithostratigraphic unit
      Status
      informal term
      In short

      Metasedimente (kalkhaltige Andalusit-Granat-Biotitschiefer) des Monte-del-Forno-Komplexes.

      Age
      Late Jurassic
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    • «Quartziti di base»

      Rank
      lithostratigraphic unit
      Status
      informal term
      In short

      Quarzit mit lokal zwischengeschaltete Amphibol-Pyroxen-Grünschiefer, Mn-Silikate und kalksilikat-führende Marmore.

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    • Ofiolite del Forno

      Rank
      lithostratigraphic unit
      Status
      informal term
      In short

      Ophiolithsequenz des Monte-del-Forno-Komplexes.

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      • Anfibolite del Forno

        Name Origin

        Monte del Forno (GR)

        Rank
        lithostratigraphic unit
        Status
        informal term
        In short

        Getüpfelter (gefleckter) bis gebänderter Amphibolit (MORB-Metabasalt ; Gautschi 1980) mit Porphyroblasten aus metamorphem Plagioklas. Pillowstrukturen (mit Epidotschlieren und Kalksilikatlagen als «Interpillow-Sedimente») und Hyaloklastite sind lokal erhalten.

        Age
        Callovian
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  • Unità della Val Malenco

    Origin of the Name

    Alta Val Malenco (Disgrazia, Italia)

    Rank
    tectonically bounded lithostratigraphic unit
    Status
    informal term
    In short

    Within the Upper Penninic Malenco-Forno-Lizun Nappe, the Malenco unit consists of large volumes of serpentinite that represent exhumed subcontinental mantle formerly exposed at the ocean floor, and, in a small area adjacent to the Margna Nappe, a transition into continental lower crust in Permian granulite facies, associated with a Permian gabbroic intrusion.

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    • Oficarbonati della Val Ventina

      Name Origin

      Val Ventina (Italia)

      Rank
      lithostratigraphic unit
      Status
      local name (informal)
      In short
      Ophikarbonat des Val-Malenco-Ultramafititkörpers, diskordant zu den alpinen Strukturen streichend.
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    • Oficarbonati di Scermendone

      Name Origin

      Valle Scermendone (Italia)

      Rank
      lithostratigraphic unit
      Status
      local name (informal)
      In short
      Ophikarbonate mit Sedimentstrukturen (Gradierung) des Val-Malenco-Ultramafititkörpers.
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    • Gabbro del Monte Braccia

      Name Origin

      Monte Braccia (Valmalenco, Italia)

      Rank
      lithostratigraphic Formation
      Status
      informal term
      In short

      Gabbroide Intrusion im Bereich der Krusten-Mantel-Grenze (d.h. zwischen Margna- und Malenco-Decke).

      Age
      Cisuralian (= Early Permian)
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    • Serpentinite della Val Malenco

      Name Origin

      Alta Val Malenco (Disgrazia, Italia)

      Rank
      lithostratigraphic unit
      Status
      informal term
      In short

      Grüner bis rostrotbraun anwitternder, Chlorit und/oder Brucit führender, magnetitreicher Antigoritschiefer mit wechselndem Gehalt an Diopsid und Olivin. Schwarze, gelängte Erzaggregate, die zur Hauptsache aus Magnetit bestehen, treten häufig vor.

      Age
      Bajocian
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    • Ur-Brekzie

      Name Origin

      Pass d'Ur = Passo della Poschiavina (GR)

      Rank
      tectonically bounded lithostratigraphic unit
      Status
      informal term
      In short
      Ophikarbonate bzw. tektonische Brekzie am Kontakt zwischen der Margna-Decke und dem Malenco-Serpentinit.
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