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
Fridtjof Nansen Central Oceanographic Laboratory in Christiania. Through his work on behalf of the League of Nations, Nansen helped to establish the principle of international responsibility for refugees. Immediately after his death the League set up the Nansen International Office for Refugees, a semi-autonomous body under the League's authority, to continue his work. The Nansen Office faced great difficulties, in part arising from the large numbers of refugees from the European dictatorships during the 1930s. Nevertheless, it secured the agreement of 14 countries (including a reluctant Great Britain) to the Refugee Convention of 1933. It also helped to repatriate 10,000 Armenians to