linea dello Zebrù
Darstellung und Status
- Farbe CMYK
- N/A
- Farbe RGB
- R: 250 G: 50 B: 50
- Rang
- Tektonik
- Gebrauch
- Element ist in Gebrauch
- Status
- informeller Begriff
Nomenklatur
- Deutsch
- Zebrù-Linie
- Français
- ligne de Zebrù
- Italiano
- linea dello Zebrù
- English
- Zebrù line
- Herkunft des Namens
- Historische Varianten
-
Il Gran Zebrù / Passi di Zebrù, Zebrù Thrust (TK500 / Gouffon et al. 2024)
- Nomenklatorische Bemerkungen
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piano di scorrimento dello Zebrù (Pozzi 1959), --- (Conti 1991), Zebrù-Linie (Spillmann 1993)
Hierarchie und Abfolge
- Obergrenze
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Ortler-Sedimente
- Untergrenze
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Campo-Kristallin
Paläogeografie und Tektonik
- Tektonische Einheit (bzw. Überbegriff)
- Herkunftstyp
-
- tektonisch
Referenzen
- Neubearbeitung
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.96: The Ortler Nappe overthrusts the Campo Nappe along the WNW– ESE striking Zebrù Thrust, which curves eastward to a NNW– SSE orientation. This thrust formed during an early stage of Late Cretaceous WNW- directed thrusting (Conti et al. 1994). Over most of its strike, the Zebrù Thrust follows the incompetent sediments of the Raibl Group, which serve as the dominant basal decollement horizon for the Mesozoic sequence of the Ortler Nappe dominated by massive Late Triassic sediments. The youngest sediments are of Turonian age (Caron et al. 1982), thus providing an important constraint regarding the timing of Cretaceous orogeny in eastern Switzerland. Only small occurrences of basement and pre-Carnian sediments are preserved locally, where the decollement horizon in the Carnian sediments encountered a syn-rift normal fault of Jurassic age (Conti et al. 1994). According to a paleogeographic reconstruction by Conti (1997), the former basement of the predominantly Mesozoic sequence of the Ortler Nappe most probably occurred east of the present Campo Nappe Complex outcrops and west of the future Ötztal Nappe Complex that nowadays occupies a higher structural position. The transport distance during top-WNW thrusting amounts to well over 100 km.