falda del Simano

Back to Simano nappe

Representation and status

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

Nomenclature

Deutsch
Simano-Decke
Français
nappe du Simano
Italiano
falda del Simano
English
Simano nappe
Origin of the Name

Cima del Simano (TI)

Historical Variants

Simanoteildecke = Simano-Decke (Heydweiller 1918), Simanodecke (Bosshard 1925, Kündig 1926a, Staub 1934), Ricoprimento Simano-Verzasca (Casasopra 1939b), Falda Simano (Godenzi 1963), Ricoprimento Simano = complesso Simano (Bianconi 1971), nappe du Simano (Mayerat Demarne 1994), Simano Nappe (Rütti et al. 2005), Simano nappe (Steck et al. 2013), unità del Simano (Schenker, Bl. Osogna)

Hierarchy and sequence

Upper boundary

Maggia-Decke

Lower boundary

Lucomagno-Leventina-Decke > Leventina-Gneis (ursp. intrusives Kontakt ; Rütti et al. 2005) bzw. Maggia-Decke

Geography

Geographical extent
Lepontin zwischen Valle Maggia und Valle Mesolcina.
Type locality

Palaenography and tectonic

Paleogeography
Northern Tethyan Margin :
Paleo-European Margin
Tectonic unit (resp. main category)
Kind of protolith
  • tectonic
Metamorphism
polycyclic
Metamorphic facies
  • amphibolite facies
Note on metamorphism

Kaledonisch + Variszisch + Alpin

References

Definition
Steck Albrecht, Della Torre F., Keller Franz, Pfeifer Hans-Rudolf, Hunziker Johannes, Masson Henri (2013) : Tectonics of the Lepontine Alps : ductile thrusting and folding in the deepest tetonic levels of the Central Alps. Swiss Journal of Geosciences, 106/3, 427-450

p.431: On their tectonic map of the Simano nappe, Keller et al. (1980) distinguished a northern Campo Tencia unit composed of staurolite–kyanite–garnet micaschist and biotite-plagioclase paragneiss (meta-graywacke), the latter intruded by the Ganna granite gneiss, from a southern zone, dominated by a granitic two mica augengneiss, the 300 Ma old Verzasca gneiss (Ko¨ppel et al. 1981). A discontinuous zone of amphibolites follows the contact of the two units. The contact of the Campo Tencia and Verzasca units resemble a shear zone (Keller 1968).

  • unità (del) Campo Tencia

    Name Origin

    Pizzo Campo Tencia (TI)

    Rank
    nappe
    Status
    informal term
    In short

    Nördlicher, frontaler Teil der Simano-Decke, bestehend aus Staurotid-Kyanit-Granat-Glimmerschiefer und Biotit-Plagioklas-Paragneis (Metagrauwacke), intrudiert durch den Ganna-Granit.

    • Gneiss di Gribbio

      Name Origin

      Gribbio (TI)

      Rank
      tectonically bounded lithostratigraphic unit
      In short
      Lembo frontale del cristallino antico del Campo Tencia.
  • unità della Verzasca

    Rank
    nappe
    Status
    informal term
    In short

    Südlicher Teil der Simano-Decke.

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