«Mittelostalpin»
Representation and status
- Index
- MOA
- Color CMYK
- N/A
- Color RGB
- R: 125 G: 125 B: 125
- Rank
- tectonic subdomain
- Validity
- Unit is not in Use
- Status
- obsolete term (disused)
Nomenclature
- Deutsch
- «Mittelostalpin»
- Français
- «Austroalpin moyen»
- Italiano
- «Austroalpino medio»
- English
- «Middle Austroalpine»
- Historical Variants
-
Mittelostalpin (Staub 1920, Tollmann 1977), Middle Austroalpin (TK500 / Gouffon et al. 2024)
Palaenography and tectonic
- 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.90: The term “Middle Austroalpine” used by Tollm ann (1977), embracing many of these units, was abandoned by more recent studies and is not used here. In Austria, tectonic units are generally grouped into nappe systems; this is not the case in this map. This effects the following nappes: 1) The Silvretta-Seckau Nappe System comprises the Languard, S-charl - Sesvenna and Silvretta nappes as well as the Campo Nappe Complex, 2) the tectonically higher Ötztal-Bundschuh Nappe System is represented only by the Ötztal Nappe Complex, 3) although the Tonale Nappe lacks a Mesozoic cover, it is attributed to the still higher Drauzug-Gurktal Nappe System which is not affected by the Alpine metamorphic overprint (Schmid et al. 2004). Note that the Silvretta Nappe, the S-charl - Sesvenna Nappe and the Campo Nappe Complex, all being part of the Silvretta-Seckau Nappe System, essentially occupy the same position within the Upper Austroalpine nappe stack (Froitzheim et al. 1994). Other units, consisting predominantly of cover sequences detached from the S-charl - Sesvenna Nappe and the Campo Nappe Complex (Ortler and Quattervals nappes, Umbrail-Terza Slice Complex), are transported towards the WNW, below the advancing Ötztal Nappe Complex (Froitzheim et al. 1994, Conti 1997, Trümpy et al. 1997).