Lizun-Einheit

Darstellung und Status

Farbe CMYK
N/A
Farbe RGB
R: 241 G: 239 B: 237
Rang
tektonische Einheit
Gebrauch
Element ist in Gebrauch
Status
lokaler Begriff (informell)

Nomenklatur

Deutsch
Lizun-Einheit
Français
unité du (Piz) Lizun)
Italiano
unità del (Piz) Lizun
English
Lizun unit
Herkunft des Namens

Piz Lizun (GR)

Historische Varianten

Lizun-Einheit (Spillmann 1993), Lizun unit (TK500 / Gouffon et al. 2024)

Hierarchie und Abfolge

Obergrenze

Margna-Decke (Maloja-Teildecke)

Untergrenze

Turba-Mylonitzone

Paläogeografie und Tektonik

Herkunftstyp
  • tektonisch

Referenzen

Neubearbeitung
Gouffon Yves (Editor) (2024) : Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern

p.78: Three units with distinct lithological assemblages of oceanic origin, situated in adjacent areas, form the Malenco-Forno-Lizun Nappe. The Malenco unit (Montrasio et al. 2005) consists of large volumes of serpentinite that represent exhumed subcontinental mantle formerly exposed at the ocean floor, and, in a small area adjacent to the Margna Nappe, a transition into continental lower crust in Permian granulite facies, associated with a Permian gabbroic intrusion (Müntener & Hermann 1996). Further north, the Forno unit consists of metabasalts and metagabbros of oceanic origin covered by metasedimentary rocks of Jurassic to Early Cretaceous age, which are in direct contact with the roof of the Bregaglia Intrusion (Puschnig 1998, Froitzheim et al. 1996 a). The Lizun unit, located around the Piz Lizun, northwest of the Engadine Fault and sinistrally offset from the Forno unit (Schmid & Froitzheim 1993), exposes same rocks of oceanic origin as in this latter unit (Liniger & Nievergelt 1990). The Malenco-Forno-Lizun Nappe, together with the Platta Nappe, is located in the hangingwall of the Turba Normal Fault (Nievergelt et al. 1996).

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