Gilbert and Ellice Islands their own administration. As a consequence of the Ellice Islands self-determination referendum, 1974, separation occurred in two stages. The Tuvaluan Order 1975 made by the Privy Council, which took effect on 1 October 1975, recognised Tuvalu as a separate British dependency with its own government. The second stage occurred on 1 January 1976 when two separate administrations were created out of the civil service of the Gilbert and Ellice Islands Colony. The British conducted a formal inquiry into Tuvaluan attitudes towards secession, and announced that a referendum was to be held, in which Tuvaluans could choose to remain with the
Geology of the Pacific Ocean existed. In a remote region of the central Pacific Ocean, at the southeastern section of the Gilbert Islands, a major swarm of intraplate earthquakes occurred between December 1981 and March 1983, with no prior seismicity having been reported in this region previously. Another swarm was detected on the Queen Charlotte Islands fracture zone in August–September 1967. The Pacific Ocean contains several long seamount chains, formed by hotspot volcanism. These include the Hawaiian–Emperor seamount chain, the Tasmantid Seamount Chain, the Lord Howe Seamount Chain and the Louisville Ridge. Geology of the Pacific Ocean The Pacific Ocean evolved in the Mesozoic from