The April 2014 Chilean earthquake occurred as the Nazca Plate slipped eastward beneath South America's continental crust.
Notes on verification
Confirmed by USGS-sourced reporting and multiple peer-reviewed studies describing the Nazca Plate's eastward subduction beneath South America as the mechanism of the April 2014 Iquique earthquake.
Sources
- What Caused the Chilean Earthquake? Faults Explained (nationalgeographic.com)
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5363922/ (ncbi.nlm.nih.gov)
- https://www.sciencedirect.com/science/article/abs/pii/S0012821X16301844 (sciencedirect.com)