Chilean-EarthquakeThe powerful earthquake that rocked Chile in April ruptured the earth in a way that suggests major quakes may still hit the region in the future, researchers say. On April 1, a magnitude-8.2 earthquake struck about 58 miles (94 kilometers) northwest of Iquique in northern Chile, a major port city and hub for Chile’s copper mining industry. It killed six people, damaged or destroyed at least 13,000 homes, caused power failures and triggered a tsunami wave nearly 7 feet (2.1 meters) high. Preliminary estimates suggest total economic losses from the temblor are close to $100 million. The powerful earthquake originated in a seismic hot spot that has produced some of the world’s strongest known tremors. The area is a subduction zone, where one tectonic plate dives beneath another — specifically, the oceanic Nazca Plate is plowing under the Pacific coast of the South American Plate at an average rate of about 2.75 inches (7 centimeters) per year. Major quakes that burst at subduction zones, the most tectonically active places on Earth, are known as megathrust earthquakes. More