Zona dell'Isorno
Back to Isorno ZoneRepresentation and status
- Color CMYK
- N/A
- Color RGB
- R: 241 G: 239 B: 237
- Rank
- tectonic zone
- Validity
- Unit is in Use
- Status
- local name (informal)
Nomenclature
- Deutsch
- Isorno-Zone
- Français
- Zone de l'Isorno
- Italiano
- Zona dell'Isorno
- English
- Isorno Zone
- Origin of the Name
-
Bassa Valle dell'Isorno (Italia), Crevadossola [non: Fiume Isorno (TI), Valle Onsernone]
- Historical Variants
-
Isorno-Mulde (Bearth 1956), Isorno-Serie (Wieland 1966), Isorno zone (Steck et al. 2013)
Description
- Description
-
very heterogeneous zone of para- and orthogneisses, amphibolites, meta-gabbros, ultramafites, calc-schists and marbles (Steck et al. 2013)
- Thickness
- 800-1000 m (Wieland 1966)
Hierarchy and sequence
- Upper boundary
-
Lago-Gelato-Zone bzw. Pioda-di-Crana-Einheit
- Lower boundary
-
Monte-Leone-Decke
Geography
- Geographical extent
- Bosco, Alpe Agarina, Masera.
References
- Definition
-
(2013) :
Tectonics of the Lepontine Alps : ductile thrusting and folding in the deepest tetonic levels of the Central Alps. Swiss Journal of Geosciences, 106/3, 427-450
p.433: The very heterogeneous zone of para- and orthogneisses, amphibolites, meta-gabbros, ultramafites, calcschists and marbles of the Bombogno unit continue to the south into the similar Isorno zone. Wieland (1966) observed the continuity between the Isorno and Orselina zones across the Masera syncline, an observation that has been confirmed by Bigioggero et al. (1981a, b) and Steck (2008).