Massive 7.5-magnitude Earthquake Trigg
7.5-Magnitude Earthquake Sparks Tsunami Fears in Chile and Antarctica A powerful 7.5-magnitude earthquake struck off the coast of southern Argentina early this morning, triggering tsunami warnings across southern Chile and parts of Antarctica. The quake occurred about 200 km south of Puerto Williams at a depth of 10 km, according to the U.S. Geological Survey. At least four aftershocks followed….