Analyse géométrique et cinématique d'un "duplex" issu d'un modèle analogique visualisé en 3D par tomographie aux rayons X

Geometry and kinematics of an experimental duplex analysed by X-ray tomography Small-scaled multilayered models with the mechanical properties of a sedimentary pile including two levels of potential decollement were performed to study the kinematics and the geometry of duplex formation. The models reproduce the main features of the duplexes seen in the foreland of many mountain belts. Thrust propagation in the duplex is always in a forward sequence and the earliest horse develops as a triangle zone. The horizontal cross-sections obtained ~~~~~~~~~2{2n199