Écaille d'Étirol–Lévaz
Zurück zu Etirol-Levaz-SchuppeDarstellung und Status
- Farbe CMYK
- N/A
- Farbe RGB
- R: 241 G: 239 B: 237
- Rang
- tektonische Schuppe
- Gebrauch
- Element ist in Gebrauch
- Status
- informeller Begriff
Nomenklatur
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- Étirol–Lévaz Slice
- Herkunft des Namens
- Historische Varianten
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Etirol-Levaz-Schuppe = Ecaille d'Etirol-Levaz (Bl. Matterhorn), lembo Austroalpino settentrionale di Etirol-Levaz (Dal Piaz et al. 1992a), Etirol-Levaz Slice (TK500, Gouffon et al. 2024)
Beschreibung
- Beschreibung
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Complexe de micaschistes éclogitiques de l'Austroalpin/Salassique septentrional.
Paläogeografie und Tektonik
- Tektonische Einheit (bzw. Überbegriff)
- Herkunftstyp
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- tektonisch
- Metamorphosefazies
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- Eklogit-Fazies
Referenzen
- Neubearbeitung
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(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).