Autochthone Sedimentbedeckung des Aar-Massivs
Back to Aar MassifRepresentation and status
- Color CMYK
- N/A
- Color RGB
- R: 200 G: 225 B: 250
- Rank
- lithostratigraphic Group
- Validity
- Unit is in Use
- Status
- valid
Nomenclature
- Deutsch
- Autochthone Sedimentbedeckung des Aar-Massivs
- Français
- couverture sédimentaire autochtone du massif de l'Aar
- Italiano
- copertura sedimentaria autoctona del massiccio dell'Aar
- English
- Autochthonous sedimentary cover of the Aar massif
- Historical Variants
-
Autochthoner Sedimentmantel (Alb. Heim), autochtone-parautochtone (Bugnon 1981), Autochthone/Parautochthone Sedimentbedeckeung des Aar-Massivs + Autochthon Gampel-Baltschieder (Kellerhals & Isler 1998), Parautochthonous and autochthonous cover (Berger et al. 2017)
Description
- Description
-
Le Lias grossièrement détritique et peu épais de Feselalp passe vers le NW au Lias puissant et bien différencié du Torrenthorn.
- Thickness
- Fortes variations d'épaisseur (30-300 m) d'origine en grande partie tectonique mais partiellement sédimentaire (Bugnon 1981).
Age
- Age at top
-
- Eocene
- Age at base
-
- Carboniferous
Palaenography and tectonic
- Paleogeography
- North Helvetic Domain
- Tectonic unit (resp. main category)
- Kind of protolith
-
- sedimentary
References
- Definition
-
(2017) :
Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129
p.53: Sedimentary rocks of the parautochthonous and autochthonous cover exhibiting diagenetic to very low-grade Alpine metamorphic overprint discordantly overlie the entire polycyclic metamorphic basement of the Aar Massif (PFIFFNER 2011). Part of the Mesozoic and Cenozoic autochthonous cover of the Aar Massif was tectonically detached from its substrate. The detached units now form a group of nappes or tectonic slices containing incomplete sequences of the same stratigraphic units as found in the autochthonous cover and are therefore here described together. The parautochthonous units represented in the map area comprise the Doldenhorn Nappe, the Färnigen Zone and the Furtwangsattel Zone. All parautochthonous units are characterised by an incomplete stratigraphic sequence showing variably preserved lithostratigraphic units.