Recherche

Deutsch: Tschep-Schuppe
Français: Écaille du Tschep
Italiano: Scaglia del Tschep
English: Tschep Slice

The Tschep Slice is the highest post-nappe tectonic unit (due to a late out-of-sequence thrusting) of the parautochthonous cover of the northeastern end of the Aar Massif. It comprises an upright stratigraphy reaching from Middle Jurassic to Early Cretaceous.

Massiv des Tschep (GR)

Tschepdecke (Pfiffner 1972), Tschep Nappe (von Däniken & Frehner 2017), Tschep-Decke, Tschep-Schuppe (den Brok et al. 2021, Bl. Vättis), Tschep Slice (TK500 / Gouffon et al. 2024)

(Parautochthon des Aar-Massivs)

Deutsch: Roggenstock–Mördergruebi-Decke
Français: Nappe du Roggenstock–Mördergruebi
Italiano: Falda Roggenstock–Mördergruebi
English: Roggenstock–Mördergruebi Nappe

The Roggenstock-Mördergruebi Nappe consists of a pair of isolated klippes forming the highest unit of the Iberg Klippen in central Switzerland. It is in direct tectonic contact with the underlying Arosa Zone that in turn overthrusts Middle Penninic units and is therefore a testimony that Austroalpine cover nappes must have formerly extended as continuous thrust sheets westwards to the meridian of the Vierwaldstättersee. These klippes only expose Late Triassic to Early Jurassic sediments, which are correlated with the nappes of the Northern Calcareous Alps.

Roggenstock (SZ)

Gesteine des Roggenstock und der Mördergruebi (Lienert et al. 2003), Roggenstock klippe (Letsch & Kiefer 2017), Roggenstock–Mördergruebi-Schuppe, Roggenstock–Mördergruebi Nappe (TK500 / Gouffon et al. 2024)

Deutsch: Monte-Generoso-Becken
Français: Bassin du (Monte) Generoso
Italiano: Bacino del (Monte) Generoso
English: Monte Generoso Basin

Monte Generoso (IT)/(Italia)

bacino del Monte Generoso (Bertotti 1991, Dal Piaz et al. 1992a), Bacino del Generoso (Bernoulli et al. 2018), Generoso Basin (Gouffon et al. 2024)

Deutsch: Mortirolo-Linie
Français: Faille du Mortirolo
Italiano: Falda del Mortirolo
English: Mortirolo Fault

The Mortirolo Normal Fault is a Late Cretaceous transtensional top-E directed extensional fault that became folded around the Pass d’Ur Antiform during Cenozoic folding. East of Lago di Poschiavo, the Mortirolo Normal Fault, defining the top of the Masuccio Nappe, abuts the basal thrust of the Campo Nappe Complex that overlies the Lower Austroalpine Bernina Nappe. In ist southern part, in the Adda Valley it separates the Masuccio Nappe (footwall) from the Tonale Nappe (hangingwall).

Passo del Mortirolo (Italia)

Mortirolo-Linie (Bockemühl & Pfister 1985), Murtirolo Linie (Werling 1992, Spillmann 1993), Lunghin-Mortirolo movement zone (Mohn et al. 2011), Mortirolo Fault (TK500 / Gouffon et al. 2024)

Deutsch: Tschirpen-Decke
Français: Nappe du Tschirpen
Italiano: Falda del Tschirpen
English: Tschirpen Nappe

The small Tschirpen Nappe is a Lower Austroalpine sedimentary sequence overlying the Arosa Zone in the southwestern part of the Prättigau Half-Window, between Tiefencastel and Arosa.

Tschirpen (GR), WSW Arosa

Tschirpendecke (Brauchli YYYY, Gees 1954), Tschirpenschuppe (Staub 1934), Tschirpen-Decke (Leupold ----, Streckeisen 1986, Pfiffner 2015, Signer et al. 2018), Tschirpen Nappe (TK500 / Gouffon et al. 2024)

Deutsch: Chastelets-Schuppe
Français: Écaille du Chastelets
Italiano: Scaglia del Chastelets
English: Chastelets Slice

The Chastelets Slice, located southeast of the Engadine Fault, is a small slice of basement and cover in the footwall of the Corvatsch Slice. It directly overlies the Platta Nappe and hence occupies a similar position to that of the Roccabella Slice northwest of the Engadine Fault.

Chastelets (GR)

Chastelets-Serie = Chastelets-Mortèl-Zone (Staub 1946), Chastelets-Sedimente (Spillmann 1993), Chastelets-Einheit (Handy et al. 1993, Spillmann & Trommsdorff 2007), Chastelets Slice (TK500 / Gouffon et al. 2024)

Deutsch: Bernina-Decke
Français: Nappe du (Piz) Bernina
Italiano: Falda del (Piz) Bernina
English: Bernina Nappe

The Lower Austroalpine Bernina Nappe is a basement-dominated nappe that occupies a very large area southeast of the Engadine Fault. The basement is dominated by Late to Post-Variscan magmatic rocks, which intrude an older basement of presumably Precambrian age with Variscan overprint that is mainly preserved in the northern part of the nappe. Its Mesozoic cover is rather sparsely preserved, except for two important and famous occurrences, one around Piz Alv, north of the Bernina Pass, in the footwall of the Languard Nappe, and the other at the Sassalb, east of Poschiavo, in the footwall of the Campo Nappe. The Bernina Nappe lacks a clear separation from the underlying Sella Nappe, which is attributed to the Salassic. South of Poschiavo, the Bernina Nappe is folded around the E-plunging Pass d’Ur Antiform and can be followed westward along the Southern Steep Belt north of the Tonale Fault, until being cut off by the Bregaglia Intrusion.

Piz Bernina (GR)

Berninadecke (Cornelius 1923), Falda di Bernina (Pozzi 1959), falda Bernina (Godenzi 1963), Bernina basement nappe (Manatschal & Nievergelt 1997), Bernina Nappe (TK500 / Gouffon et al. 2024)

Deutsch: Vals-Schuppen
Français: Écailles de Vals
Italiano: Scaglie di Vals
English: Vals Slices

The Lower Penninic Vals Slices (former «Upper Vals Slices») overly the Adula Nappe in its northeastern frontal part. They are mainly composed of Mesozoic shaly-calcareous-sandy marine sedimentary rocks («Bündnerschiefer») with some ophiolitic rocks of Late Jurassic age, similarly to the overlying Aul, Grava and Tomül nappes (all rooted in the «Misox Zone» between the Adula and Tambo nappes).

Obere Valserschuppen = Upper Valserschuppen (van der Plas 1959), untere Aul-Lappen + Obere Valser Schuppen (Kupferschmid 1977), Upper Vals Mélange, Upper Vals Slices, Vals Slices (TK500 / Gouffon et al. 2024)

Deutsch: Étirol–Lévaz-Schuppe
Français: Écaille d'Étirol–Lévaz
Italiano: Scaglia di Étirol–Lévaz
English: Étirol–Lévaz Slice

The Etirol-Levaz Slice is an Upper Penninic tectonic unit situated between the Zermatt-Saas Fee Nappe and the Tsaté Nappe. It comprises eclogitic micaschists similar to that of the structurally higher Dent Blanche and Sesia nappes. It is likely derived from extensional allochthons, formed during the Jurassic opening of the Piemonte-Liguria Ocean in a more distal position than the Cervinia Terrane from which the Salassic nappes originate.

Étirol (Italia)

Etirol-Levaz-Schuppe = Ecaille d'Etirol-Levaz (Bl. Matterhorn), lembo Austroalpino settentrionale di Etirol-Levaz (Dal Piaz et al. 1992a), Etirol-Levaz Slice (TK500, Gouffon et al. 2024)

Deutsch: Châtillon–St-Vincent-Schuppen
Français: Écailles de Châtillon–St-Vincent
Italiano: Scaglie di Châtillon–St-Vincent
English: Châtillon–St-Vincent Slices

The Châtillon-St-Vincent Slices are Upper Penninic tectonic units situated between the Zermatt-Saas Fee Nappe and the Tsaté Nappe. They comprise eclogitic continental basement rocks similar to that of the structurally higher Dent Blanche and Sesia nappes. They are likely derived from extensional allochthons, formed during the Jurassic opening of the Piemonte-Liguria Ocean in a more distal position than the Cervinia Terrane from which the Salassic nappes originate.

fenêtre de Châtillon-Zermatt (Argand 1906a), lembo Austroalpino meridionale di Chatillon (Dal Piaz et al. 1992a), Châtillon-St-Vincent Slices (TK500, Gouffon et al. 2024)