Complesso di falde di Campo
Zurück zu Campo-DeckenkomplexDarstellung und Status
- Farbe CMYK
- N/A
- Farbe RGB
- R: 241 G: 239 B: 237
- Rang
- Deckenkomplex
- Gebrauch
- Element ist in Gebrauch
- Status
- gültig
Nomenklatur
- Deutsch
- Campo-Deckenkomplex
- Français
- Complexe de nappes de Campo
- Italiano
- Complesso di falde di Campo
- English
- Campo Nappe Complex
- Historische Varianten
-
Campo Nappe Complex (TK500 / Gouffon et al. 2024)
Beschreibung
- Beschreibung
-
Oberostalpiner Dekenkomplex ...
Hierarchie und Abfolge
- Untergeordnete Einheiten
Paläogeografie und Tektonik
- Tektonische Einheit (bzw. Überbegriff)
- Herkunftstyp
-
- tektonisch
- Metamorphose
- metamorph
Referenzen
- Neubearbeitung
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.93: The Campo Nappe Complex (formerly Campo Nappe s.l.), dominated largely by Variscan basement, forms the third largest basement-cover unit that occupied the same tectonic position as the Silvretta and S-charl - Sesvenna nappes during the Cretaceous orogeny (Silvretta-Seckau Nappe System of Schmid et al. 2004). This nappe complex is composed of different nappes which have substantial petrological and structural differences. Note that contrary to Staub (1964) and many Italian authors (e. g., Chiesa et al. 2012), the Ortler Nappe is here not regarded as a part of the Campo Nappe Complex. The individual nappes are described below, from southwest to northeast.
-
Falda del Masuccio
- Rang
- Decke
- Status
- gültig
- Kurzbeschreibung
-
The Masuccio Nappe, consisting exclusively of amphibolite-facies Variscan basement, is the lowermost unit of the Campo Nappe Complex. It overthrusts the Bernina Nappe and is located in the footwall of the Late Cretaceous Mortirolo Normal Fault, a transtensional top-E directed extensional fault that became folded around the Pass d’Ur Antiform during Cenozoic folding. In the south, the Masuccio Nappe is in a subvertical orientation and part of the Southern Steep Belt (or root zone) located north of the Tonale Fault, where it is juxtaposed with the structurally much higher Tonale Nappe, located further south and directly adjacent to the Tonale Fault.
-
Campo-Decke
- Name Origin
- Rang
- Decke
- Status
- gültig
- Kurzbeschreibung
-
The Campo Nappe is the largest unit of the Upper Austroalpine Campo Nappe Complex and predominantly consists of Variscan basement, locally intruded by Permian magmatites (e.g., Sondalo Gabbro, Martell Granite). This nappe tectonically overlies the Masuccio Nappe in the southwest and the Languard Nappe in the northeast and extends all along the base of the tectonically higher Ortler Nappe. Its former Permian–Mesozoic cover has been almost completely detached very early during WNW-directed Late Cretaceous thrusting and is not present nowadays due to erosion, except as small occurrences more or less attached to the basement of the Campo Nappe.
-
Grosina-Decke
- Name Origin
- Rang
- Decke
- Status
- informeller Begriff
- Kurzbeschreibung
-
The Grosina Nappe forms a series of tectonic klippes on the southwestern parts of the Campo Nappe along a distinct mylonitic zone associated with top-NW to top-N senses of shear of Cretaceous age that possibly reworked a Jurassic décollement zone. The amphibolite-facies Variscan basement of the Grosina Nappe is in parts similar to that of the underlying Campo Nappe. However, the basement of the Grosina Nappe differs in that orthogneisses are much more frequent, and, additionally, in that there is often a pervasive greenschist-facies metamorphic overprint of the older high-grade fabrics. The root zone of the Grosina Nappe most probably occurs at the southern margin of the Campo Nappe Complex and in the immediate footwall of the tectonically higher Tonale Nappe.
-
Laas-Decke
- Name Origin
-
Laas = Lasa (Italia), Val Venosta
- Rang
- Decke
- Status
- gültig
- Kurzbeschreibung
-
The Laas Nappe exposes a series of often subvertically northward inclined garnet and staurolite bearing paragneisses, marbles and amphibolites metamorphosed under amphibolite-facies conditions during the Variscan orogeny. Cretaceous metamorphic overprint varies from greenschist facies in the west to lower amphibolite facies in the east. This nappe occupies a much-debated and still unclear position in the Upper Austroalpine nappe pile.
-
Vinschgau-Scherzone
- Name Origin
-
Vinschgau = Val Venosta
- Rang
- tektonische Zone
- Status
- informeller Begriff
- Kurzbeschreibung
-
The Vinschgau Shear Zone represents the structurally highest unit of the Campo Nappe Complex and constitutes a greenschist-facies Alpine mylonitic belt with a thickness of up to 2–3 km that accommodates W-directed thrusting of the Ötztal Nappe Complex in the area north of the Vinschgau Valley floor. South of the valley floor and in the lowermost Val Müstair, the same mylonitic belt accommodates WNW-directed thrusting of the easternmost part of the Umbrail-Terza Slice Complex over the S-charl-Sesvenna Nappe.