Complexe de nappes du Wildhorn

Représentation et statut

Couleur CMYK
N/A
Couleur RGB
R: 241 G: 239 B: 237
Rang
complexe de nappes
Usage
Ce terme est en usage.
Status
valide
Discussion du statut

Nomenclature

Deutsch
Wildhorn-Deckenkomplex
Français
Complexe de nappes du Wildhorn
Italiano
Complesso di falde del Wildhorn
English
Wildhorn Nappe Complex
Origine du nom

Wildhorn (VS)/(BE)

Variantes historiques

Wildhorndecke, nappe du Wildhorn, Wildhorn Nappe Complex (Gouffon et al. 2024)

Description

Description

Die Wildhorn-Decke schliesslich, die umfangreichste der drei Decken, zeigt einen ausgeprägten Stockwerkbau. Sie weist einzig auf der Ostseite des Kientals und am Bundstock einen Kern von Lias auf. Sonst sind die mächtigen «Aalénien- Schiefer» (=Molser Serie) das älteste Schichtglied. Ein komplizierter Malm/Dogger-Faltenbau ist durch die beweglichen Mergel des Berriasien vom Kreide- Stockwerk mit dem transgressiven Tertiär getrennt. (Herb et al. 1978 S.236)

Hiérarchie et succession

Limite supérieure

chevauchement basal ultrahelvétique

Âge

Âge au sommet
  • Crétacé
Âge à la base
  • Trias

Paléogéographie et tectonique

Paléogéographie
domaine sud-helvétique
Type de protolithe
  • tectonique

Références

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

p.40: The Wildhorn Nappe Complex comprises a complete stratigraphic series ranging from Triassic to Paleogene. It occupies the Rawil axial depression: southwest of Rawilpass, the axes of the main folds dip to the NE, while northeast of the pass they dip to the SW. The nappe complex continues to the northeast up to the Kander Valley, where it is replaced by the Axen and Drusberg nappes. The Axen Nappe contains Jurassic strata, whereas the Drusberg Nappe is made up of Cretaceous–Paleogene strata. Hänni & Pfiffner (2001) set the northeastern limit of the Wildhorn Nappe Complex at the Mesozoic synsedimentary Bachli-Giesenen Fault, which was reactivated by Alpine nappe stacking. This fault induced an abrupt lateral increase in the thickness of the Cretaceous sediments toward the east which in turn caused an important change in structural style (Hänni & Pfiffner 2001).
The Wildhorn Nappe Complex consists of three superposed nappes: the Diablerets Nappe, present only in the southwest, at the base of the complex, is linked by a tight syncline to the Mont Gond Nappe, which is also outcropping mainly in the southwestern part of the complex. The highest Sublage Nappe forms the main body of the complex; it overlies the thin Jägerchrüz Nappe north of Sierre and the Gellihorn Nappe further northeast (see § 4.1.3).

  • Nappe du Sublage

    Name Origin

    Sublage (VS)

    Rang
    nappe
    Statut
    valide
    En bref

    The Sublage Nappe is an Upper Helvetic tectonic nappe in the Western Swiss Alps. It is the highest unit of the Wildhorn Nappe Complex and forms the main body of the complex. To the southwest it overlies the Mont Gond Nappe, whereas it overlies the thin Jägerchrüz Nappe north of Sierre and the Gellihorn Nappe further northeast.

    • Synclinal du Prabé

      Name Origin

      Prabé (VS)

      Rang
      tectonique
      Statut
      terme informel
      En bref

      Synclinal couché et très effilé de la nappe du Wildhorn, à coeur d'Ultrahelvétique (nappe d'Anzeinde) et structure interne complexe.

    • Anticlinal de Drône

      Name Origin

      Drône (VS)

      Rang
      tectonique
      Statut
      terme informel
      En bref
      Anticlinal complexe, ramifié et asymétrique (absence du Lias dans le flanc normal), dont le coeur est constitué de gypse et dolomie triasiques.
      Age
      Trias
  • Nappe du Mont Gond

    Name Origin

    Mont Gond de Conthey (VS), au nord de Conthey

    Rang
    nappe
    Statut
    valide
    En bref

    The Mont Gond Nappe is an Upper Helvetic tectonic nappe in the Western Swiss Alps. Forming the middle part of the Wildhorn Nappe Complex, it is present only in the southwest and is linked by a tight syncline to the underlying Diablerets Nappe.

    Age
    Jurassique Moyen
  • Nappe des Diablerets

    Name Origin

    massif des Diablerets (VD)/(VS)

    Rang
    nappe
    Statut
    valide
    En bref

    The Diablerets Nappe is an Upper Helvetic tectonic nappe in the Western Swiss Alps. Forming the base of the Wildhorn Nappe Complex, it is present only in the southwest and is linked by a tight syncline to the overlying Mont Gond Nappe.

    Age
    Jurassique Moyen
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