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Deutsch: Hegau-Bodensee-Graben
Français: Graben du Hegau-Bodensee
Italiano: Graben dell'Hegau-Bodensee
English: Hegau-Bodensee Graben

The NW–SE trending extensional Hegau-Bodensee Graben represents the southeastern extension of the Freiburg-Bonndorf-Bodensee Fault Zone and is associated with the Neogene Hegau Volcanic Province.

Hegau and Bodensee (Deutschland) regions

Hegau-Bodensee-Störungszone (DM-Geologie), Hegau-Bodensee graben (Diehl et al. 2018), Bodensee-Hegau Graben = Hegau-Bodensee Graben (Diehl et al. 2020), Hegau-Bodensee-Graben (Nagra), Hegau-Lake Constance Graben System (Fabbri et al. 2021), fossé du Hegau-Bodensee, Hegau-Bodensee Graben (TK500 / Gouffon et al. 2024)

Deutsch: Err-Deckenkomplex
Français: Complexe de nappes d'Err
Italiano: Complesso di falde di Err
English: Err Nappe Complex

The Err Nappe Complex is a Lower Austroalpine tectonic unit encompassing a number of tectonic subunits that, from a paleogeographical point of view, are derived from the most distal part of the Adriatic passive margin which was linked to the adjacent oceanic realm of the Platta Nappe.

Piz d'Err (GR)

Errdecke (Zyndel 1912, Ott 1922, Staub 1934, Stöcklin 1949), Err-Julier-Gruppe (Cornelius 1935), nappe de l'Err (Trümpy 1970), Err-Decke = cuverta dal Err (Manatschal 1995), Err system (Manatschal & Nivergelt 1997), Err-Deckenkomplex (Furrer et al. 2015), Err Nappe Complex (TK500 / Gouffon et al. 2024)

Deutsch: Campo-Decke
Français: Nappe de Campo
Italiano: Falda di Campo
English: Campo Nappe

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.

Val di Campo = Val da Camp (GR)

mittelostalpine Decke = Campo-Decke (Alb. Heim 1922), Campodecke (Rösli 1928, Spillmann 1993), Campo-Decke s.l. > Campo-Decke s.str. (Staub 1946), falda di Campo (Pozzi 1957), falda Campo (Godenzi 1963, Montrasio et al. 2012), Campo-Languard-Einheit (Dössegger 1987), Campo Nappe (TK500 / Gouffon et al. 2024)

Deutsch: S-charl–Sesvenna-Decke
Français: Nappe de S-charl–Sesvenna
Italiano: Falda S-charl–Sesvenna
English: S-charl–Sesvenna Nappe

The S-charl-Sesvenna Nappe (including the Tavrü Slice) in the southeastern compartment of the Engadine Fault occupies the same tectonic position as the Silvretta Nappe in the northwestern compartment of this fault.

The basement of the S-charl-Sesvenna Nappe is commonly referred to as the Sesvenna basement and its cover as “S-charl-Unterbau” (a series of NE–SW trending series of synclines and anticlines that affect both basement and cover without major detachments within the sedimentary sequence) and “S-charl-Oberbau” (nowadays referred to as Tavrü Slice, consisting entirely of a Norian to Cretaceous succession, volumetrically dominated by an over 2 km thick Hauptdolomit and completely detached from the Carnian Raibl Group).

S-charl (GR)

Falda di Scarl (Pozzi 1957), Unterengadiner Dolomiten = S-charl-Decke (Cadisch et al. 1968), S-charl–Sesvenna-Teildecke (Stutz & Walter 1983), Sesvenna-S-charl nappe (Furrer et al. 1985), Scarl-Decke (Gruber et al. 2010), S-charl–Sesvenna Nappe (TK500 / Gouffon et al. 2024)

Deutsch: Ela-Decke
Français: Nappe de l'Ela
Italiano: Falda di Ela
English: Ela Nappe

The Ela Nappe, which forms the hangingwall of the Madulain Slices and the footwall of the Upper Austroalpine Silvretta Nappe, consists of a sedimentary sequence that was completely detached from its former crystalline substrate during Cretaceous top-W thrusting along Carnian evaporites. Large parts of it were affected by sinistrally transpressive deformation during Cretaceous shortening, followed by an extensional overprint in the latest Cretaceous and the N-directed thrusting of the Silvretta Nappe during the Cenozoic orogeny. Hence, the internal structure of the Ela Nappe is highly complex due to its polyphase deformation.

Piz Ela (GR)

Aeladecke (Zyndel 1912, Ott 1922, Eggenberger 1925, Cornelius 1932, Wilhelm 1933, Stöcklin 1949), nappe de l'Ela (Trümpy 1970), Aela Nappe (Celâl Sengör 1982), Ela-Einheit (Dössegger 1987), Ela nappe (Manatschal & Nievergelt 1997), Ela-Decke (Eberli 1985, Furrer et al. 2015), falda Ela, Ela Nappe (TK500 / Gouffon et al. 2024)

Deutsch: Mont-Fort-Decke
Français: Nappe du Mont Fort
Italiano: Falda del Mont Fort
English: Mont Fort Nappe

The Mont Fort Nappe is a Middle Penninic tectonic unit of the Western Alps extending from the Valle d’Aosta in the SSW to the Val d’Anniviers in the NNE. Its basement (similar to the upper, monocyclic part of that of the Siviez-Mischabel Nappe) ends as an anticline in the Val d’Hérémence, just downstream of the Grande Dixence Dam, but its Permian–Mesozoic sedimentary cover (characteristically including a large accumulation of breccias;) continues towards the east and forms pinched recumbent frontal folds with the lower part of the Tsaté Nappe up to the Lac de Moiry. Southward, the Mont Fort Nappe is interrupted by the Col de Bard Fault, but equivalent units are found further south in the Valle d’Aosta and in the Vanoise mountain range.

Mont Fort (VS)

nappe du Mont Fort (Escher in: Woodtli 1985, Allimann 1987, Escher 1988, Gouffon 1993, Escher et al. 1997, Sartori et al. 2006, Pantet et al. 2017), falda di Monfort [sic] (Dal Piaz et al. 1992a), Mont Fort nappe (Malusà et al. 2005), Mont Fort Nappe (TK500, Gouffon et al. 2024)

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

The Tambo Nappe is a Middle Penninic tectonic unit of eastern Switzerland made up of polymetamorphic paragneisses intruded by the Permian Truzzo Granite that escaped Paleozoic deformation and metamorphism. This crystalline basement is unconformably overlain by a Permian–Mesozoic cover roughly comparable to the Briançonnais facies of the Barrhorn (Siviez-Mischabel Nappe) and Vanoise series.

Pizzo Tambo (GR)

Tambodecke (Heydweiller 1918, Kündig 1926a, Staub 1934, Gansser 1937a, Strohbach 1965, Weber 1966), Falda Tambò (Godenzi 1963), Tambo nappe = Tambo Nappe (Gulson 1973), Tambo-Decke = lembo di ricoprimento del Tambo (Schmutz 1976), falda Tambò (Sciesa 1991), nappe du Tambo (Mayerat Demarne 1994), Tambo Nappe (TK500 / Gouffon et al. 2024)

cf. Marquer et al. 1994, Marquer & Peucat 1994

Deutsch: Zone Submédiane
Français: Zone Submédiane
Italiano: Zona Submédiane
English: Zone Submédiane

The Zone Submédiane is a mélange zone that is generally found at the base of the Préalpes Médianes Nappe and morphologically determines a succession of mountain passes and valleys. It contains slivers of varying composition, size and origin (from the Ultrahelvetic to the Subbriançonnais realms) within a matrix comprising evaporites or «wildflysch».

Zone imbriquée de la vallée inférieure de la Grande Eau (Sarasin 1915), zone submédiane McConnell & de Raaf 1929), submediane zone = north-penninic mélange (Masson et al. 1980), zone sub-médiane (Escher et al. 1987), North-Penninic Submediane nappe (Polino et al. 1990), zone Submédiane (Ackermann et al. 1991), Zone Submédiane (TK500 / Gouffon et al. 2024)

Deutsch: Klus-Formation
Français: Formation de la Klus
Italiano: Formazione della Klus
English: Klus Formation

Basaler Komplex der «Prättigau-Schiefer», bestehend aus schwach metamorphen quarzführenden bzw. kieseligen und spätigen Kalken, mit dünnen, serizitisierten Tonschiefer-Zwischenlagen.

Klus = Chlus (GR), zwischen Landquart und Schiers

«schistes lustrés» (Trümpy 1916), Komplex der Bündner Schiefer der Klus = Sandkalke der Klus = Kluskalken = Kalkserie der Klus (Kopp 1926), Klusserie (Blumenthal 1931, Nänny 1948, Rutsch et al. 1966), série de la Klus (Trümpy 1957, van der Plas 1959, Trümpy 1970), Klus-Serie (Bolli et al. 1980), Klus Formation (Winkler 2024)

Deutsch: Ferret-Schuppe
Français: Écaille de Ferret
Italiano: Scaglia di Ferret
English: Ferret Slice

The Ferret Slice occupies the external part of the Sion-Courmayeur Nappe in Valais. It consists mostly of Cretaceous metasediments.

Val Ferret (VS)

Val Ferretmulde (Schmidt & Preiswerk 1908), zone de Ferret (Trümpy 1955), Ferret-Zone (Fricker 1960), digitation de Ferret (Zulauf 1963), unité de Ferret (Escher et al. 1987, Jeanbourquin & Burri 1989, Burri et al. 1993), subfalda del Val Ferret (Dal Piaz et al. 1992a), Ferret zone (Masson et al. 2008), Ferret Slice (TK500, Gouffon et al. 2024)