The United States Geological Survey (USGS) revised down the quake magnitude, initially reported at 8, adding that it hit at a depth of 11 km (7 miles). The earthquake struck more than 700 km (435 miles) southeast of Argentina's city of Ushuaia,

A major, preliminary magnitude 7.5 earthquake struck in the South Atlantic Ocean late Thursday, the United States Geological Survey reported. The U.S. National Oceanic and Atmospheric Administration said there was no longer a threat of a tsunami after an earlier advisory by Chilean authorities for parts of Antarctica.

A powerful 7.5 magnitude earthquake has been reported in the Drake Passage, situated between South America's southern tip and Antarctica. The quake occurred 10 kilometers beneath the surface, as confirmed by the United States Geological Survey (USGS).

A powerful magnitude 7.5 earthquake struck in the Drake Passage, located between the southern tip of South America and Antarctica, the Pacific Tsunami Warning Centre reported Friday. The United States Geological Survey (USGS) said the quake,