“…This approach may provide practical data on (1) the deformation style, kinematics, and deformation history of hazardous surface-rupturing structures (e.g., slip rate, creeping versus episodic displacement, most recent event); (2) controlling factors; and (3) parameters that may help to differentiate between tectonic and nontectonic faults-a rele vant issue, from the seismic-hazard perspective, with a still poorly developed scientifi c basis (Hanson et al, 1999). Recent trenching studies on active normal faults related to interstratal dissolution of salt-bearing evaporites conducted in the Iberian Chain and the Pyrenees, Spain (Gutiérrez et al, 2012a(Gutiérrez et al, , 2012bCarbonel et al, 2013), and in the Paradox Basin, Utah (Guerrero et al, 2012), indicate episodic displacement on these gravitational structures, and slip rate and displacement-per-event values significantly larger than those expectable for tectonic faults.…”