f 3D Volumic and Gravity Modelling Applied to Cadomian Terranes (Northern French Brittany) and Argentat Fault Area (French Massif Central)

Geological bodies are naturally complex because they result from a succession of events that have led to their present morphologies. In order to understand them, maps, sections, drillings, seismic profiles are commonly used to reconstruct their geometry. These informations are generally represented apart from each other on separate media. In that case, relationship between the data are often difficult to understand. Moreover, geometrical incoherences are not easy to detect. Three dimensional modelling is an essential tool to merge all the 1D and 2D geometrical data in a unique 3D spats. Then, a 3D model can be constructed to represent the geometry of the whole study area.