GIS and 3D geological reconstruction of the Zuccone gravitational deformation, Val Taleggio (Southern Alps)

This work aims to show how geological maps can be used for the 3D modelling of complex geological bodies. Geological data must be organised in a Geographic Information System and then imported in GOCAD, a software which allows the creation of 3D surfaces, solids and grids using points and linear elements. A deep-seated slope gravitational deformation developed in the Triassic sedimentary cover of the Southern Alps (Val Taleggio, BG) has been reconstructed. This phenomenon occurs in a complex structural setting comprising thrust faults crossed by strike-slip and normal faults. 3D modelling is mainly based on topographic, geological, structural, and morphological linear features. In this way a direct control of bi-dimensional interpretations is possible, leading to a better understanding of complex geological bodies, and as a base for geomechanical modelling.