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
Hans Nansen favour as to sacrifice cheerfully the political liberties of his country, is a matter for conjecture. After the Revolution Nansen continued in high honour, but he chiefly occupied himself with commerce, and less with politics. Hans Nansen Hans Nansen (28 November 1598 – 12 November 1667) was a Danish statesman. The son of a burgher, Evert Nansen, he was born at Flensburg. He made several voyages to the White Sea and to places in northern Russia, and in 1621 entered the service of the thriving Danish Icelandic Company. For many years the whole trade of Iceland, which he frequently visited,