Roccabella-Schuppe

Representation and status

Color RGB

R: 239 G: 237 B: 235

Rank

tectonic slice

Validity

Unit is in Use

Status

local name (informal)

Nomenclature

Deutsch

Roccabella-Schuppe

Français

Écaille de la Roccabella

Italiano

Scaglia della Roccabella

English

Roccabella Slice

Origin of the Name

Roccabella (GR)

Historical Variants

Roccabella-Serie s.l. (Dietrich 1969), Roccabella-Sedimente (Spillmann 1993), Roccabella-Einheit (Furrer et al. 2015), Roccabella Slice (TK500 / Gouffon et al. 2024)

Description

Description

Äquivalent der Chastelets-Schuppe nordwestlisch der Engadiner Linie.

Hierarchy and sequence

Subordinate units

• Roccabella-Schiefer
• Roccabella-Granit

Geography

Geographical extent

NW der Engadin-Störung.

Palaenography and tectonic

Tectonic unit (resp. main category)

• Bardella-Roccabella :
  ex Samedan-Zone rev.

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.85: The Bardella-Roccabella Slices, also located northwest of the Engadine Fault, are sedimentary slices detached from their former crystalline substrate. The Bardella Slice is located in the footwall of the Julier Nappe and overthrusts the sedimentary cover of the Err Nappe, being pinched in along the multiply deformed synclinorium of the “Samedan Zone”, all the way between the Julierpass road and St. Moritz. The Roccabella Slice, in contrast, is found in the immediate footwall of a klippe of the Err Nappe and is in direct contact with the Platta Nappe in the area east of Septimerpass. Small occurrences of sedimentary slices belonging to the Err Nappe Complex are also found north of Sils Maria, pinched in between the overlying basement of the Err Nappe and the Platta Nappe (Handy et al. 1996, Handy 1996).