Blattengrat-Decke
Torna a Sardona-DeckeRappresentazione e statuto
- Colore CMYK
- N/A
- Colore RGB
- R: 241 G: 239 B: 237
- Rango
- falda
- Uso
- Unità in uso.
- Status
- valido
Nomenclatura
- Deutsch
- Blattengrat-Decke
- Français
- Nappe du Blattengrat
- Italiano
- Falda del Blattengrat
- English
- Blattengrat Nappe
- Origine del nome
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Blattengrat = Plattengrat (GL), NE Fanenstock
- Varianti storiche
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Blattengrat unit = Blattengrat Schichtfolge (Lihou 1995), Blattengrat-Schuppenzone, Blattengrat-Decke (Hantke et al. 2019, den Brok et al. 2021), Blattengrat Nappe (TK500 / Gouffon et al. 2024)
Descrizione
- Descrizione
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Decke (bzw. Schuppenzone) südhelvetischer Herkunft, die zwischen den nordhelvetischen Parautochthon und die ultrahelvetische Sardona-Decke «eingewickelt» ist. Stratigraphisch durch normale südhelvetische spätkretazischen (Amden- und Wang-Fm.) und paläogenen (Stad-Fm.) mergeligen Ablagerungen charakterisiert. Die zwischengelagerten Nummulitenkalken vom «Einsiedler Typus» gehen lokal in klastischen Bänken (Batöni-Sandstein) über.
Gerarchia e successione
- Unità sovrastante
- Unità sottostante
- Limite superiore
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Oberhelvetikum (via Glarner Hauptübershiebung)
- Limite inferiore
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Unterhelvetikum bzw. subhelvetische Elemente
Età
- Geomorfologia
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- Eocene
- Età alla base
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- Tardo Cretacico
Geografia
- Estensione geografica
- Zwischen Linth- und Rheintal: Weisstannental, Sernftal.
Paleogeografia e tettonica
- Paleogeografia
- Distal NHS (S-Helv.)
- Termini generici
- Tipo di origine
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- tettonico
Referenze
- Revisione
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(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.36: Three allochthonous units, which were emplaced in an early phase onto the future Helvetic domain (see p. 31), crop out in the area between Linthal and Sargans. They are composed mainly of Late Cretaceous to Paleogene sediments deposited in the very distal part of the Helvetic realm: Blattengrat and Bad Ragaz nappes of South Helvetic, Sardona Nappe of Ultrahelvetic affinity. The three units were subsequently truncated by the Glarus Thrust, which is the basal thrust of the Upper Helvetic subdomain, and simultaneously cut by out-of-sequence thrusts also involving both the basement and the cover of the Aar Massif (see § 4.1.1, Fig. 5).