Complexe de nappes du Wildhorn

Representation and status

Color CMYK
N/A
Color RGB
R: 241 G: 239 B: 237
Rank
nappe complex
Validity
Unit is in Use
Status
valid
Status discussion

Nomenclature

Deutsch
Wildhorn-Deckenkomplex
Français
Complexe de nappes du Wildhorn
Italiano
Complesso di falde del Wildhorn
English
Wildhorn Nappe Complex
Origin of the Name

Wildhorn (VS)/(BE)

Historical Variants

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)

Hierarchy and sequence

Subordinate units
Units at roof
Units at floor
Upper boundary

chevauchement basal ultrahelvétique

Age

Age at top
  • Cretaceous
Age at base
  • Triassic

Palaenography and tectonic

Paleogeography
South Helvetic Domain
Kind of protolith
  • tectonic

References

Definition
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)

    Rank
    nappe
    Status
    valid
    In short

    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.

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    • Synclinal du Prabé

      Name Origin

      Prabé (VS)

      Rank
      tectonic
      Status
      informal term
      In short

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

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    • Anticlinal de Drône

      Name Origin

      Drône (VS)

      Rank
      tectonic
      Status
      informal term
      In short
      Anticlinal complexe, ramifié et asymétrique (absence du Lias dans le flanc normal), dont le coeur est constitué de gypse et dolomie triasiques.
      Age
      Triassic
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  • Nappe du Mont Gond

    Name Origin

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

    Rank
    nappe
    Status
    valid
    In short

    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
    Middle Jurassic
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  • Nappe des Diablerets

    Name Origin

    massif des Diablerets (VD)/(VS)

    Rank
    nappe
    Status
    valid
    In short

    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
    Middle Jurassic
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