Earthquakes in Mendoza: Argentina's Most Seismic Region

Yes. Mendoza, at the foot of the Andes, faces moderate-to-high earthquake risk and is Argentina's most seismic region. Although the country does not sit directly above a subduction zone like Chile, the deformation associated with the uplift of the Andes has produced numerous active faults across the province. These crustal faults, close to the cities, can produce very destructive shallow earthquakes despite moderate magnitudes.

The most tragic episode is the earthquake of 20 March 1861, which completely destroyed the city of Mendoza and killed thousands, one of the greatest seismic disasters in Argentine history. The province has suffered other significant earthquakes, such as the 1985 event in the Barrancas area, which caused considerable damage. The proximity of the faults to populated areas is the main risk factor.

Because of its Andean fault activity so close to its cities, Mendoza is classified in Argentina's highest earthquake-hazard zone according to INPRES. Seismic building codes are mandatory in the province, and both modern construction and public preparedness are key to reducing risk in a region with recurring seismicity.