The Grand Arc is a top and a link of the the French Alps which is located in Savoy between Right Bank of Low the Maurienne and left bank of the Isere (Vallée of Tarentaise and Combe of Savoy) commonly attached to the Massif of Lauzière, and more largely with the Massif of Vanoise. For this reason, it is most Western, dealing with the Massif Wallows. It dominates of more than 2000 meters the valley of Isere.
It is separated from the solid mass of Lauzière by the collar of Basmont, in south-east.
Geologically, on the other hand, it falls under the prolongation of the chain of Belledonne, in particular by its NORTH-SOUTH orientation, and its dominant crystalline rocks (Micaschiste S). It is from a point of view of the very homogeneous relief.
Principal topsNorth in the south:
Large Lanche, 2110 m
- the Tooth of the Corbel, 2286 m
- the Tile, 2294 m
- the Large Arc, 2484 m, culminating point of the link
- the Small Arc, 2365 m
- the Tank of Turche, 2010 m
- Geology Large-Arc/Lauzière
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