Fault-slip inversions: Their importance in terms of strain, heterogeneity, and kinematics of brittle deformation

摘要: Abstract Heterogeneous deformation is intrinsic in natural deformation, but often underestimated the analysis and interpretation of mesoscopic brittle shear faults. Based on 11,222 faults from two distinct tectonic settings, Central Andes Argentina Sudbury area Canada, interpolation principal strain directions scaled analogue modelling, we revisit controversial issues fault-slip inversions, collectively adhering to heterogeneous deformation. These include significance inversion solutions terms (1) or paleo-stress; (2) displacement, notably plate convergence; (3) local versus far-field deformation; (4) perturbations (5) spacing between stations data acquisition. Furthermore, highlight value inversions for identifying kinematics master fault zones absence displaced geological markers. A key result our assessment that relate strain, not paleo-stress, thus can aid inferring, Moreover, caused by mechanical anomalies deforming upper crust significantly influence directions. Thus, differently oriented axes inferred a given region may point regional successive regimes. This outcome calls into question common practice separating sets apparently homogeneous subsets. Finally, fact displacement vectors strains are rarely co-linear defies use as proxy estimating plate-scale motions.