Deutsch: Drauzug-Gurktal-Deckensystem Français: Système de nappes du Drauzug-Gurktal Italiano: Sistemo di galde del Drauzug-Gurktal English: Drauzug-Gurktal Nappe System
In Switzerland, the Drauzug-Gurktal Nappe System of the Austrian nomenclature (which is not affected by the Alpine metamorphic overprint) is represented only by the Tonale Nappe.
Drauzug-Gurktal Nappe System (TK500 / Gouffon et al. 2024)
Deutsch: Rothorn-Schwarzhorn-Deckenkomplex Français: Complexe de nappes du Rothorn-Schwarzhorn Italiano: Complesso di falde del Rothorn-Schwarzhorn English: Rothorn-Schwarzhorn Nappe Complex
The Rothorn-Schwarzhorn Nappe Complex encompasses relatively small tectonic units situated south and northeast of the Prättigau Half-Window and separating the Upper Penninic Arosa Zone from the Upper Austroalpine Schiahorn and Silvretta nappes. The lithofacies of the sediments preserved in these units have a Lower Austroalpine affinity, i.e., an Adriatic distal margin origin.
Rothorn-Schwarzhorn Nappe Complex (TK500 / Gouffon et al. 2024)
Deutsch: Subvulkanischer Körper vom Colle Gallo Français: Coprs subvolcanique du Colle Gallo Italiano: Corpo subvulcanico del Colle Gallo English: Colle Gallo Subvolcanic Body
The Colle Gallo Subvolcanic Body, situated near Albino (northeast of Bergamo), encompasses many sills and small magma bodies of andesitic composition intruded the Lower Orobic Imbricates and the Upper Orobic Nappe. The unit is associated with normal faults and cut earlier thrusts. Intrusion ages around 40 Ma and geochemical analyses suggest a close relationship with the earliest Adamello intrusion stages.
Colle Gallo Subvolcanic Body (TK500 / Gouffon et al. 2024)
Deutsch: Oberpenninikum der Westschweiz Français: Pennique Supérieur de Suisse occidentale Italiano: Pennidico Superiore della Svizzera occidentale English: Upper Penninic of Western Switzerland
In western Switzerland, the Upper Penninic subdomain contains mainly magmatic and sedimentary rock units of oceanic origin. Some thin continental margin sedimentary series and small continental crust slices are intercalated within these units. All of these units were driven into a subduction zone under the Salassic nappes, some exposed to high-pressure metamorphic conditions, others remaining under lower pressure conditions.
Upper Penninic of Eastern Switzerland (TK500 / Gouffon et al. 2024)
The Internal Aar Massif is restricted to a thin band situated south of the Rote Kuh-Gampel Shear Zone and its possible continuation between Aletsch and Rhône glaciers. It is subdivied into two submassifs: the Baltschieder-Gletsch Submassif in upper Valais region, and the Trun-Punteglias Submassif in the Surselva (Graubünden), with an autochthonous sedimentary cover preserved in part locally.
internes Aar-Massiv (Sartori et al. 2017), Internal Aar Massif (TK500 / Gouffon et al. 2024)
The External Aar Massif is situated north of the Rote Kuh-Gampel Shear Zone and makes up almost the entire width of the Aar Massif in its central part. North of the Lötschental, it overthrusts the Gastern Submassif with a contact marked by a thin band of Triassic and Jurassic sediments («Jungfrau Wedge»), which includes overturned sediments of the External Aar Massif. Several large-scale structures follow the general strike of the External Aar Massif. They include longitudinal faults and very tight synclines exposing Late Paleozoic and Mesozoic sediments.
externes Aar-Massiv (Sartori et al. 2017), External Aar Massif (TK500 / Gouffon et al. 2024)
