Rhône-Simplon line

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Geology of the Alps
Mont Blanc
Tectonic subdivision

Helvetic nappes

Penninic nappes
Austroalpine nappes
Southern Alps
Formations & rocks

Bündner slate | flysch | molasse

Geological structures

Aarmassif | Dent Blanche klippe | Engadine window | Flysch zone | Giudicárie line | Greywacke zone | Hohe Tauern window | Molasse basin | Penninic thrustfront | Periadriatic Seam | Ivrea zone | Lepontin dome | Rechnitz window | Rhône-Simplon line | Sesia unit

Paleogeografic terminology

Valais Ocean

Briançonnais microcontinent
Piemont-Liguria Ocean
Apulian or Adriatic plate

The Rhone-Simplon line is a large geologic faultzone in the Swiss Alps.

The line runs from the Ossola valley over the Simplon Pass and then follows the Rhône valley in an east-west direction. Somewhere south of Sion it goes over smoothly into the Penninic thrustfront.

Geologically speaking, the line serves as a huge dextral strike-slip fault. The northeastern block (called the Lepontin dome) is moving up as well. Geologists see the line as an expression of the continued NNW movement of the Apulian plate into the European plate.

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