Ophiolite du Versoyen

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Representation and status

Color CMYK
(38%,0%,25%,37%)
Color RGB
R: 100 G: 160 B: 120
Rank
lithostratigraphic unit
Validity
Unit is in Use
Status
local name (informal)

Nomenclature

Deutsch
Versoyen-Ophiolith
Français
Ophiolite du Versoyen
Italiano
Ofiolite del Versoyen
English
Versoyen ophiolite
Origin of the Name

Vallée du Versoyen (France)

Historical Variants
séries du Versoyen = Couches du Versoyen = Schistes à blocs et roches vertes (Burri 1979), Ophiolites of the Versoyen, unità ofiolitica del Versoyen = ofioliti del Versoyen (Dal Piaz et al. 1992a), Versoyen ophiolitic complex = Versoyen ophiolites = Versoyen complex = Versoyen ophiolitic zone = Versoyen black schists (Masson et al. 2008), ophiolites of the Versoyen zone = Versoyen ophiolites (Steck 2008)

Description

Description
gabbros (Aiguille du Clapet, Aiguilles de l'Ermite), serpentinite (Mont Miravidi), corps gneissique (Punta Rossa)
Thickness
Max. 700-800 m à la frontière franco-italienne suite à de multiples répétitions tectoniques (Masson et al. 2008).

Hierarchy and sequence

Subordinate units
Upper boundary
dolomie triasique et calcschistes liasiques
Lower boundary
nappe de Sion-Courmayeur (-Tarentaise)

Age

Age at top
  • Visean
Age at base
  • Visean
Dating Method
337 +/-4.1 Ma (U/Pb SHRIMP zircon ; Bussy et al. 2005, Masson et al. 2008)

References

Definition
Masson Henri, Bussy François, Eichenberger Marc, Giroud Niels, Meilhac Caroline, Presniakov Sergei (2008) : Early Carboniferous age of the Versoyen ophiolites and consequences: non-existence of a “Valais ocean” (Lower Penninic, western Alps). Bull. Soc. géol. Fr. 179/4, 337-355

  • Gabbro de l'Aiguille du Clapet

    Name Origin

    Aiguille du Clapet (France)

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    In short

    layered gabbroic massif

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  • Serpentinite du Mont Miravidi

    Name Origin

    Mont Miravidi (France)/(Italia)

    Rank
    lithostratigraphic unit
    Status
    local name (informal)
    Show details
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