Postage stamps and postal history of the Gilbert and Ellice Islands Tuvalu. The Gilbert Islands issued stamps under that name before attaining independence on 12 July 1979 as the Republic of Kiribati. The first stamps of Kiribati were a pair issued on 19 November 1979 to mark the independence of the country. The Tuvalu Philatelic Bureau was established on 1 January 1976, which was the day the Gilbert and Ellice Islands colony was dissolved and Tuvalu established as a separate British dependency. The first stamp issue was a set of provisional overprinted definitive stamps and a commemorative set of three stamps. The first postage stamp cancellation devices were put into use
Geology of the Pacific Ocean Geology of the Pacific Ocean The Pacific Ocean evolved in the Mesozoic from the Panthalassic Ocean, which had formed when Rodinia rifted apart around 750 Ma. The first ocean floor which is part of the current Pacific Plate began 160 Ma to the west of the central Pacific and subsequently developed into the largest oceanic plate on Earth. The tectonic plates continue to move today. The slowest spreading ridge is the Gakkel Ridge on the Arctic Ocean floor, which spreads at less than , while the fastest, the East Pacific Rise near Easter Island, has a spreading rate of over