Is the Indian Ocean the world’s ocean?

Where is indian ocean on the map

The Indian Ocean has the shape of a triangle, the median lines of which are formed by oceanic ridges, arranged a rovesc Ocean basins are divided into three unequal sets. Between the southwest and northwest ridges, western or African basins were formed by the accretion of the African plate. These are submerged basins occupied by small abyssal plains, and divided by seismic ridges, whose main form forms the plateau of the Sech The Carlsberg Ridge penetrates the Gulf of Aden and is responsible for the opening of the Red Sea and the rotation of the Arabian Peninsula.

The northern and eastern basins, corresponding to the Australian-Indian plate, were created when the shields of the Deccan and Australia drifted northward. The basins are extensive and deep (Sinhalese, Western Australian, South Australian basins), compartmentalized by seismic ridges. The southern basins, created by the expansion of the Antarctic plate between the south-western and south-eastern Indian ridges, are smaller and partly isolated from the Southern Ocean by the Kerguelen and Crozet highlands and their underwater extensions.

Most continental margins are passive. Continental shelves are usually narrow, except in the southwest (Madagascar region), in the north (Persian Gulf and Deccan O.), and in the space between Indonesia and Australia. The continental slopes are straightened and locally extended by extensive marginal plateaus. The weakly inclined continental surfaces reach considerable sizes in the Arabian Sea (Indus cone) and the Bay of Bengal (Ganges cone), built from the voluminous alluvial inputs provided by the rivers coming from the Himala. The margins dominated by the peninsulas and island arcs of Southeast Asia are the only ones of active and seismic type.