Nappe de la Sarine
Representation and status
- Index
- Saa
- Color CMYK
- N/A
- Color RGB
- R: 241 G: 239 B: 237
- Rank
- nappe
- Validity
- Unit is in Use
- Status
- valid
- Scs Note
-
TK500 >>> EN: Sarine plutôt que Saane
Nomenclature
- Deutsch
- Saane-Decke
- Français
- Nappe de la Sarine
- Italiano
- Falda della Sarine
- English
- Sarine Nappe
- Origin of the Name
-
Vallée de la Sarine (BE)/(FR)/(VD) entre Saanen et Château-d'Oex
- Historical Variants
-
nappe de la Sarine (Caron 1972, Dapples 1998), Saanen-Decke, Sarine nappe (Slaczka et al. 1992), nappe de la Sarine (Gurnigel) (Plancherel 1998), Sarine Nappe (TK500, Gouffon et al. 2024)
Description
- Description
-
Nappe des Préalpes supérieures regroupant plusieurs écailles de flysch (Maastrichtien à Paléocène).
Hierarchy and sequence
- Units at roof
- Upper boundary
-
nappe des Dranses (contact tectonique)
- Lower boundary
-
nappe des Préalpes Médianes ou nappe de la Brèche (contact tectonique)
Age
- Age at top
-
- earliest Ypresian
- Note about top
-
Ilerdien basal
- Age at base
-
- Early Maastrichtian
Geography
- Geographical extent
- Synclinal de nappes de Château-d’Oex, flancs sud des anticlinaux des Préalpes médianes plastiques internes et localement au-dessus des Préalpes médianes rigides.
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 Sarine Nappe (Saane-Decke in German) was not recognized as an independent nappe for a long time, because some of the lithologies strongly resemble those of the Dranses Nappe. However, the Sarine Nappe is characterized by two distinctive lithologies (Caron 1972, Bugnon 1995): 1) very fine-grained, lightcolored limestones with trace fossils (Chondrites isp.) and 2) polymict micaceous conglomerates, often containing various crystalline rocks. The age of these rocks is latest Cretaceous to earliest Paleocene.