Les unités briançonnaises de la bordure orientale du massif de la Vanoise méridionnale (Savoie) - Evolution sédimentaire et structurale

TL;DRAbstract

On the considered transverse, stratigraphie and structural studies allow us to distinguish : A) 5 superincumbent units 1) A lower basement unit, which forms the real basal complex of Southern Vanoise massif, never display any post paleozoic cover. 2) An upper basement unit, showing same petrographies characteristics and drifted on the precedent by an early thrust underline by Permo-Triasic quartzites. This upper basement unit supports an adherent Jurassic cover and slices of brecciated " Ambin type " marbles. In spite of very dilacered aspect and because of their convergent facies , we purpose to see in these "Ambin type" series the autochtonous cover of the upper basement unit, taken off this one and its autochton jurassic cover by early alpine deformations. 3 ) The "Grande Hotte type" units, drifts on the precedent unit and which principally out crop at the East of the "Doron de Termignon" (Pierre Brune / Lanserlia / Coëtet / Chavière). We probaly find some nappe outlier in Lanslebou

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