Fig. 14

Interpretative configuration of the post-Variscan setting (at c. 270 Ma) based on a modified version of Fig. 2 in Matte (2001). The scheme show a possible frame of the Variscan belt of western Europe and north Africa, with the main Upper Carboniferous-Permian regional fault systems and related continental basins (after Burg et al. 1994). The original scheme of Matte (2001) is modified taking into account the data and interpretations proposed in this work. The Santa Lucia Fault (whose remnants are documented in the lower to mid-crust shear zone in the Alpine Santa Lucia Nappe), and the East Tuscan Fault (remnants in subsurface of Pontremoli and Larderello deep well) in the Apennines are represented. The East Tuscan Fault is prolonged southwards into the Lagonegro-Imerese-Sicani marine rifted domains (Catalano et al. 1995) westernmost extension of the Permian rifted basin related with Neo-Tethys (Ziegler and Stampfli 2001; Stampfli et al. 2002; Garfunkel 2004; Xyapolis et al. 2006; Schettino and Turco 2011). (1) Gondwana and Gondwana-derived crust blocks (Apulia and Adria figured); (2) Southern Europe Variscan belt: (a) low-grade external and nappe zone dots foreland domains, (b) axial zone medium to high grade units, suture/s and Ordovician arcs, (c) hinterland and Variscan retrowedge (Armorica, Hun or Brunia terranes); (3) (a) Laurussia-derived blocks of the northern continent; (b) inner domains of the South Europe Variscan orogen; (4) Permian sedimentary basins: (a) continental, (b) marine; (5); main vergence of the nappes; (6) kinematics of late Palaeozoic regional faults; (7) extension direction during Upper Carboniferous-Permian. The possible positions of the Briançonnais, South-Alpine and Austro-Alpine domains are also reported (see also Festa et al. 2018; Ballevre et al. 2018 and references); thin dashed red lines represent dyke trend in Calabria (after Festa et al. 2010). Si: Sicani; Im: Imerese; Lag: Lagonegro; Ca: Calabria; Tu: Tuscany; Car: Carnia; IV Ivrea Zone; EL: External Ligurian; Z: Zicavo Shear Zone; P: Posada-Asinara; G: Grighini Shear Zone. (b) Conceptual schematic cross-section to envisiged the proposed tectonic scenario for late Palaeozoic in Central Mediterranean. The regional cross-section is traced not-perpendicular to the main regional fault systems to show and insert all the late Palaeozoic crustal domains and the different zones of South Europe Variscan orogen discussed in the text