Formazione dei Vanis
Back to Antigorio NappeRepresentation and status
- Color CMYK
- (57%,0%,7%,41%)
- Color RGB
- R: 65 G: 150 B: 140
- Rank
- lithostratigraphic Formation
- Validity
- Unit is in Use
- Status
- informal term
Nomenclature
- Deutsch
- Vanis-Formation
- Français
- Formation des Vanis
- Italiano
- Formazione dei Vanis
- English
- Vanis Formation
- Origin of the Name
-
Graben unterhalb Piano dei Vanis (TI) E Campo
- Historical Variants
-
"Marbre rubané" (Matasci 2009), Vanis banded formation (Matasci et al. 2011 p.262)
Description
- Description
-
calcaires et calcschistes rubannés
- Geomorphology
- Série souvent replissée du fait du contraste rhéologique entre les niveaux calcaires et argileux.
- Thickness
- 10-15 m (Matasci et al. 2011).
Hierarchy and sequence
- Units at roof
- Units at floor
Age
- Age at top
-
- Berriasian
- Age at base
-
- Berriasian
Geography
- Geographical extent
- Lepontin: Val d'Antabia, Alpe Sevinèra, Pizzo Castello.
References
- Definition
-
(2011) :
The Teggiolo zone: a key to the Helvetic–Penninic connection (stratigraphy and tectonics in the Val Bavona, Ticino, Central Alps). Swiss J. Geosci. 104, 257–283
p.262: 3.3.5 The Vanis banded formation
A very characteristic, 10–15 m thick, banded formation overlies the white marble with a sharp contact. It consists in an alternation of centimeter- to decimeter-thick beds of light-colored, often slightly orange, impure marble, with dark calcschists of variable thickness. The well marked layering of these two rocks with contrasted rheological properties is favorable to folding (Fig. 11). This banded marble/calcschist association occurs very continuously above the Sevinèra marble, as well in the Val Antabia as near Campo or farther E through the Alpe di Sevinèra up to the foot of the Pizzo Castello. As it is well exposed in the northern cliff of the Vanis ravine above Campo (e.g. 683.650/142.050) we name it the Vanis Formation.