A 7.5 magnitude earthquake rattled the Chilean Antarctic region and the southern Drake Passage on Thursday, the US Geological Survey said.

There was no tsunami threat after Thursday's earthquake of magnitude 7.5 in the Drake Passage between South America and Antarctica, the Pacific Tsunami Warning Center said, following its brief warning for Chilean coastal areas.

A powerful magnitude 7.5 earthquake struck the remote Drake Passage, a body of water between South America and Antarctica.