History of South Georgia and the South Sandwich Islands in the Arctic claiming Jan Mayen and Sverdrup Islands, but also in Antarctica. Norway claimed Bouvet Island and looked further south, formally inquiring with Foreign Office about the international status of the area between 45° and 65° south latitude and 35° and 80° west longitude. Following a second such diplomatic démarche by the Norwegian Government dated 4 March 1907, Britain replied that the areas were British based on discoveries made in the first half of the 19th century, and issued the 1908 Letters Patent incorporating the British Falkland Islands Dependencies with a permanent local administration in Grytviken established in 1909.
Agulhas Bank nearly two-thirds of present-day South Africa. Basaltic lavas were extruded 183 Mya to form the Karoo large igneous province; a volcanism caused by the Bouvet hotspot which is linked to the Gondwana break-up. The Bouvet hotspot was located in or near present-day South Africa from the late Triassic 220 mya and until the Africa-Antarctica breakup 120 mya. The Bouvet hotspot track stretches south-east from the African continent, near the South Africa-Mozambique border, and east of the AFFZ down to Bouvet Island/Bouvet Triple Junction in the South Atlantic. 100 Mya, the region where the triple junction was located passed over the