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
Back Here on Earth however, and Back Here on Earth is still a very solid set, certainly worth acquiring if you like his other LPs for this label." All compositions by Gordon Lightfoot. Back Here on Earth Back Here On Earth is Canadian singer Gordon Lightfoot's fourth studio album, released in 1968 on the United Artists label. Apart from his eponymous debut album, it is Lightfoot's only studio album not to derive its title from a song on the album. "Back Here on Earth" was Lightfoot's last studio recording on the United Artists label which he left after releasing the live album "Sunday Concert"