Fig. 11

Reconstructed tectonic evolution of the GVTZ. Shaded dark grey units with folds and structures showing black symbols are active during each deformational stage. a Nucleation of the Grem fault on an inherited paleotectonic lineament related to the Mesozoic evolution of the Lombardian basin. b The growth of the GVTZ. The Corno Branchino, originally developed as an E–W trending footwall syncline, is distorted along the GVTZ in a dextral transpression. The indenter of unit 5, bounded by the Zuccone and the N-Grem faults, formed during this deformation phase. c Reactivation of the southern termination of the Grem fault propagating southward. The back-thrust of unit 5 on the Mt. Vaccaro syncline is accommodated by dextral and vertical displacement along the S- and E-Grem faults