Tschirpen-Decke

Representation and status

Color CMYK

N/A

Color RGB

R: 241 G: 239 B: 237

Rank

nappe

Validity

Unit is in Use

Status

valid

Nomenclature

Deutsch

Tschirpen-Decke

Français

Nappe du Tschirpen

Italiano

Falda del Tschirpen

English

Tschirpen Nappe

Origin of the Name

Tschirpen (GR), WSW Arosa

Historical Variants

Tschirpendecke (Brauchli YYYY, Gees 1954), Tschirpenschuppe (Staub 1934), Tschirpen-Decke (Leupold ----, Streckeisen 1986, Pfiffner 2015, Signer et al. 2018), Tschirpen Nappe (TK500 / Gouffon et al. 2024)

Description

Description

Basale Schuppe der Silvretta-Decke (Gees 1954), heute als eigenständige unterostalpine Decke betrachtet.

Age

Age at top

• Jurassic

Age at base

• Triassic

Geography

Geographical extent

Mittelbünden, zwischen Lenzerheide und Arosa.

Palaenography and tectonic

Tectonic unit (resp. main category)

• Tschirpen

Kind of protolith

• tectonic

References

Definition

Gouffon Yves (Editor) (2024) : Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern

p.89: In the southwestern part, between Tiefencastel and Arosa, the Lower Austroalpine is represented by two small nappes, namely from top to bottom: the Rothorn Nappe with a basement-cover sequence, directly underlying the Upper Austroalpine Schiahorn Nappe (see § 8.2.2), and the sedimentary Tschirpen Nappe overlying the Arosa Zone.