Gilbert and Ellice Islands around $250 million for revenue they had not received and for environmental destruction caused by phosphate mining practices similar to those on Nauru. The British authorities had relocated most of the population to Rabi Island, Fiji after 1945, but by the 1970s many were returning to Banaba. The British rejected the Banaban independence proposal, and the island remained under the jurisdiction of Kiribati. The Gilbert and Ellice Islands used their own postage stamps from 1911. Gilbert and Ellice Islands The Gilbert and Ellice Islands were a British protectorate from 1892 and colony from 1916 until 1 January 1976, when the
Geology of the Pacific Ocean . The Pacific Ocean developed from the Panthalassa, a vast global ocean, following the breakup of the supercontinent Pangaea in the Mesozoic Era, gradually forming Gondwana and Laurasia, which in turn divided. There is no firm date for when the changeover occurred, as the replacement of the sea bed is a continuous process, though reconstruction maps often change the name from Panthalassic to Pacific around the time the Atlantic Ocean began to open. The Panthalassic Ocean first opened around 750 million years ago at the breakup of Rodinia, but the oldest Pacific Ocean floor is only around 180 Ma old.