Fig. 6

Sketches illustrating the tectonic evolution of the Tauern Window. a D1 subduction of the Piemont-Liguria Ocean and accretion of oceanic relics in front of the Austroalpine nappe stack (≈65 Ma, i.e. Cretaceous-Palaeogene boundary), abbreviations as follows: GÖ Göss nappe, HA Hochalm nappe, SR Sonnblick-Romate nappe, VA Valaisan (Glockner Nappe system), PL Piemont-Liguria (Matrei Zone); b D2 subduction of the Valais Ocean and parts of the distal European margin (≈41 Ma; i.e. latest Lutetian); c D3 exhumation of the high-pressure units and incipient accretion of the European crust (≈35 Ma; i.e. Late Priabonian); d D4 formation of the Venediger Duplex and Tauern “Kristallisation” (≈29 Ma, i.e. Early Oligocene), PFS Periadriatic Fault system; e D5 indentation, doming and lateral extrusion (≈17 Ma, i.e. Burdigalian), SEMP Salzach-Ennstal-Mariazell-Puchberg Fault, KSZS Katschberg Shear Zone system, SAT Southern Alpine overthrusts; f schematic present-day lithosphere-scale cross-section across the eastern part of the Tauern Window, ZWF Zwischenbergen-Wöllatratten Fault