Evolving geometrical and material properties of fault zones in a damage rheology model

摘要: We discuss numerical simulations of evolving fault zone structures in a 3-D lithospheric model with seismogenic crust governed by damage rheology that accounts for large strain associated permanent brittle deformation. Results the initial propagation an existing narrow subjected to oblique loading exhibit strong asymmetry respect orientation and predict out-of-plane directions propagating zones. The orientations simulated zones agree analytical expectations based on fracture mechanics wing cracks generated at tips crack under mixed mode loading. Lithosphere-scale long-term evolution strike-slip produce initially system stepping en echelon segments asymmetric generation new evolve continuing deformation throughgoing localized structure. Large-scale perturbation geometry Moho interface together regional heat regime can reduce considerably degree localization structure fields.