Bouvet Island island was claimed for the British Crown by George Norris, who named it Liverpool Island. He also reported Thompson Island as nearby, although this was later shown to be a phantom island. The first "Norvegia" expedition landed on the island in 1927 and claimed it for Norway. At this time the island was named "Bouvet Island", or "Bouvetøya" in Norwegian. After a dispute with the United Kingdom, it was declared a Norwegian dependency in 1930. It became a nature reserve in 1971. The island was discovered on 1 January 1739 by Jean-Baptiste Charles Bouvet de Lozier, commander of the French
South American–Antarctic Ridge South American–Antarctic Ridge The South American–Antarctic Ridge (SAAR or AAR) is the tectonic spreading center between the South American Plate and the Antarctic Plate. It runs along the sea-floor from the Bouvet Triple Junction in the South Atlantic Ocean south-westward to a major transform fault boundary east of the South Sandwich Islands. Near the Bouvet Triple Junction the spreading half rate is , which is slow, and the SAAR has the rough topography characteristic of slow-spreading ridges. The boundary between the South American and Antarctic plates can be divided into three parts of which the SAAR forms the eastern third: