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
Timeline of the 2008 North Indian Ocean cyclone season depressions, 4 Cyclonic storms and 1 Severe Cyclonic storm formed. The scope of this basin is north of the Equator and west of the Malaysian Peninsula. The India Meteorological Department (IMD) and Joint Typhoon Warning Center (JTWC) monitor tropical cyclones in this basin. This basin is divided into two different seas by the IMD; the Arabian Sea to the west of India, which is abbreviated as ARB by the IMD, and the Bay of Bengal to the east of India, which is abbreviated as BOB by the IMD. Timeline of the 2008 North Indian Ocean cyclone season The 2008 North