strati.ch - Lexique lithostratigraphique de la Suisse

Représentation et statut

Variantes historiques: lambeau de recouvrement du Mont Emilius (Argand 1911b), lembo di ricoprimento del Monte Emilius = lembo del Monte Emilius = lembo dell'Emilius (Bearth 1980), lembo Austroalpino meridionale del M. Emilius (Dal Piaz et al. 1992a), Mont Emilius Nappe (TK500, Gouffon et al. 2024)

Termes génériques

Type de protolithe

Faciès métamorphique

Révision: Gouffon Yves (Editor) (2024) : Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern

p.69: The Mont Emilius Nappe, the Etirol-Levaz Slice, the Châtillon-St-Vincent Slices (Dal Piaz 1999 and ref. therein) and the Theodulgletscher Slice (Bucher et al. 2020), located between the Zermatt - Saas Fee Nappe and the Tsaté Nappe, comprise eclogitic continental basement rocks. Due to the similarity of their pre-Alpine lithology with that of the Dent Blanche and Sesia nappes, their origin is probably the Adriatic continental margin. However, these units occupy a lower structural level than the Dent Blanche and Sesia nappes that belong tectonically to the Salassic domain. They exhibit a tectono-metamorphic history similar to that of the Zermatt - Saas Fee Nappe, including the Early Eocene age for their high-pressure metamorphism (Dal Piaz et al. 2001, Weber et al. 2015). These units likely derived from extensional allochthons, formed during the Jurassic opening of the Piemonte-Liguria Ocean in a more distal position than the Cervinia Terrane from which the Salassic nappes originate (see chap. 7).