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
Betty Nansen until her death in 1943. In 1896, she married the writer, journalist and director of Gyldendal, Peter Nansen (1861–1918). Her second marriage was to the actor Henrik Bentzon. She died on 15 March 1943, just 4 days shy of her 70th birthday. Betty Nansen Betty Nansen (née Betty Anna Maria Müller) (19 March 1873 – 15 March 1943) was a Danish actress and theatre director of the theater that carries her name, the Betty Nansen Theatre. She was born on 19 March 1873. She had her debut in the fall of 1893 in Copenhagen's Casino Theater as the title character