Fig. 9

3D model of the GVTZ. a Geological structural map draped on the 20 m pixel size DEM of Regione Lombardia. b–f The workflow used to integrate field data as lithological boundaries, fault and thrust surface traces in a 3D environment to build a 3D cross sections grid. g, h Reconstructed 3D surfaces of the Corno Branchino syncline, the N-Grem fault and the floor thrust of the Menna-Nossana thrust sheet (unit 5)