Simmen-Decke (s.s.)
Representation and status
- Index
- Sim
- Color CMYK
- N/A
- Color RGB
- R: 241 G: 239 B: 237
- Rank
- nappe
- Validity
- Unit is in Use
- Status
- valid
- Status discussion
Nomenclature
- Deutsch
- Simmen-Decke (s.s.)
- Français
- Nappe de la Simme (s.s.)
- Italiano
- Falda della Simme (s.s.)
- English
- Simme Nappe (s.s.)
- Origin of the Name
- Historical Variants
-
Nappe rhétique (Rabowski 1912), nappe de la Simme (Alb. Heim / A. Jeannet in: Rabowski 1920, Escher et al. 1987, Dapples 1998, Plancherel 1998), nappe du Simmenthal, Simmendecke (Labhart), Simme Nappe (TK500, Gouffon et al. 2024)
Description
- Description
-
Die oberpenninische Simmen-Decke enthält als Eigenheit eine pelagische mesozoische Abfolge mit südalpiner Affinität (Gueyraz-Komplex des Tissota-Melanges), sowie Kreideflysche. Sie liegt über und am Hinterrand der Brekzien-Decke.
dont certains éléments ont un cachet nettement austroalpin, principale alimentation des premiers conglomérats de la molasse
Braillard 2015 S.5: Die Simmen-Decke enthält als Eigenheit eine pelagische mesozoische Abfolge mit südalpiner Affinität (Gueyraz-Komplex).
Hierarchy and sequence
- Lower boundary
-
nappe de la Brèche (contact tectonique)
Age
- Age at top
-
- Santonian
- Age at base
-
- Albian
Geography
- Type area
- Simmental (BE)
Palaenography and tectonic
- Paleogeography
- Piemont Basin
- Tectonic unit (resp. main category)
- Kind of protolith
-
- tectonic
References
- Definition
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.59: The Simme Nappe has a more complicated structure especially visible in the Romandes Prealps, because this nappe is more extensive here then in the Chablais Prealps. The sequence contains pelagic Mesozoic sediments of Adriatic affinity (Middle Jurassic–Early Cretaceous, Clément 1986) overlain by a Turonian–Santonian flysch. This succession is disrupted by internal thrusts that repeat part of the sequence and create an internal mélange. This internal structure of the Simme Nappe implies a north to south thrust of the northern part over the southern part during Late Cretaceous times (Plancherel et al. 2020).
Material and varia
