Engadiner Dolomiten
Torna a Austroalpino inferioreRappresentazione e statuto
- Colore CMYK
- N/A
- Colore RGB
- R: 241 G: 239 B: 237
- Rango
- falda
- Uso
- Unità in uso.
- Status
- termine informale
Nomenclatura
- Deutsch
- Engadiner Dolomiten
- Français
- Dolomites Engadines
- Italiano
- Dolomiti Engadinesi
- English
- Engadine Dolomites
- Varianti storiche
- Unterengadiner-Dolomiten (Alb. Heim 1922), Unterengadiner Dolomiten (Medwenitsch 1962), Dolomites engadinoises (Hirsch 1966), Unterengadiner Dolomiten = S-charl-Decke (Cadisch et al. 1968), nappe of the Engadine Dolomites (Furrer et al. 1985)
Gerarchia e successione
- Unità di rango inferiore
Geografia
- Estensione geografica
- SE der Engadin-Störung
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S-charl–Sesvenna-Decke
- Name Origin
- Rango
- falda
- Statuto
- valido
- In breve
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The S-charl-Sesvenna Nappe (including the Tavrü Slice) in the southeastern compartment of the Engadine Fault occupies the same tectonic position as the Silvretta Nappe in the northwestern compartment of this fault.
The basement of the S-charl-Sesvenna Nappe is commonly referred to as the Sesvenna basement and its cover as “S-charl-Unterbau” (a series of NE–SW trending series of synclines and anticlines that affect both basement and cover without major detachments within the sedimentary sequence) and “S-charl-Oberbau” (nowadays referred to as Tavrü Slice, consisting entirely of a Norian to Cretaceous succession, volumetrically dominated by an over 2 km thick Hauptdolomit and completely detached from the Carnian Raibl Group).
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Tavrü-Schuppe
- Name Origin
- Rango
- scaglia tettonica
- Statuto
- valido
- In breve
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Within the S-charl-Sesvenna Nappe, the Tavrü Slice (formerly known as “S-charl-Oberbau”) consists entirely of a Norian to Cretaceous succession, volumetrically dominated by an over 2 km thick Hauptdolomit. It is completely detached from the Carnian Raibl Group. This slice, separated from the tectonically higher Ötztal Nappe by the Schlinig Thrust, suffered substantial internal extension in a domino-style.
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linea del Gallo
- Name Origin
- Rango
- tettonica
- Statuto
- termine informale
- In breve
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Steilstehende tektonische Grenzfläche zwischen S-charl-Decke und Umbrail-Chavalatsch-Schuppen bzw. Quattervals-Decke.
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Quattervals-Decke
- Name Origin
- Rango
- falda
- Statuto
- valido
- In breve
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The Quattervals Nappe consists of a series of NNE-dipping slices that overthrust the Ortler Nappe along the western part of the Trupchun-Braulio Thrust. It comprises almost exclusively Late Triassic sediments, mostly dolomitic and calcareous formations of the Norian Hauptdolomit Group of considerable thickness overlain by Rhaetian deposits, which became detached from their former substratum along the Carnian Raibl Group during the Cretaceous orogeny.
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linea del Braulio
- Name Origin
- Rango
- tettonica
- Statuto
- termine informale
- In breve
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The Trupchun-Braulio Thrust formed during a later stage of the Cretaceous orogeny. It juxtaposed the Quattervals Nappe (in the west) and the Umbrail-Terza Slice Complex (in the east) over the Ortler Nappe. The thrust is marked by calcite mylonites derived from the footwall and exhibits numerous top-WNW sense-of-shear indicators (Conti 1997).
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Ortler-Decke
- Name Origin
- Rango
- falda
- Statuto
- valido
- In breve
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The Upper Austroalpine Ortler Nappe overthrusts the Campo Nappe along the WNW–ESE striking Zebrù Thrust, which follows the incompetent sediments of the Raibl Group over most of its strike as the dominant basal décollement horizon. Only small occurrences of basement and pre-Carnian sediments are preserved locally, the main Mesozoic sequence being dominated by massive Late Triassic sediments. The hangingwall of the Ortler Nappe is defined by the Trupchun-Braulio Thrust that formed during a later stage of the Cretaceous orogeny and juxtaposed the Quattervals Nappe (in the west) and the Umbrail-Terza Slice Complex (in the east) over the Ortler Nappe.
- Age
- Permiano