Excavated trenches at two sites across the Marquesado–La Rinconada fault system along eastern Precordilleran front south of San Juan, Argentina, reveal earthquake history this rapidly urbanizing region. Interpretation earthquakes is based on both generation colluvial wedges and upward terminations, as well folding events in fine-grained alluvium ponded behind upslope-facing scarps. The ages pas...

Many large-magnitude faults (6.5≤ Mw ≤7.2) of the Italian Apennines are characterized by multi-century return times, so historical sources may have missed their last earthquake or other predecessors. Hence, even in Italy, where seismic catalogs among most comprehensive and time-extensive worldwide, there is a need for complementary studies that might fill lack information enhance knowledge conc...