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Mid-ocean ridge cross-section (cut-away view) A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics.It typically has a depth of about 2,600 meters (8,500 ft) and rises about 2,000 meters (6,600 ft) above the deepest portion of an ocean basin.
Separating the African (or Nubian–Somali plates) and Antarctic plates, the Southwest Indian Ridge (SWIR) stretches 7,700 km (4,800 mi) from the Atlantic Ocean to the Indian Ocean. With an average spreading rate of 14–15 millimetres per year (0.55–0.59 in/year), the SWIR is one of the slowest-spreading mid-ocean ridges on Earth.
The Southeast Indian Ridge (denoted by the yellow line) The Southeast Indian Ridge (SEIR) is a mid-ocean ridge in the southern Indian Ocean.A divergent tectonic plate boundary stretching almost 6,000 km (3,700 mi) between the Rodrigues triple junction) in the Indian Ocean and the Macquarie triple junction) in the Pacific Ocean, the SEIR forms the plate boundary between the Australian and ...
Now located 1100 km from the CIR, hotspot crossed the CIR near 18-20°S, from the Indian to the African plate, at 47 Ma. The Réunion hotspot track includes the Chagos-Laccadive Ridge on the Indian plate which leads to the Indian west-coast where the newborn hotspot produced the Deccan Traps in north-west India at 66 Ma.
A bathymetric chart is a type of isarithmic map that depicts the submerged bathymetry and physiographic features of ocean and sea bottoms. [26] Their primary purpose is to provide detailed depth contours of ocean topography as well as provide the size, shape and distribution of underwater features.
Bay of Bengal near Tenneti Park, Visakhapatnam. A zone 50 m wide extending from the island of Sri Lanka and the Coromandel coast to the head of the bay, and thence southwards through a strip embracing the Andaman and Nicobar islands, is bounded by the 100 fathom line of sea bottom; some 50 m. beyond this lies the 500-fathom limit.
The Chagos–Lakshadweep Ridge (CLR), also known as the Chagos–Lakshadweep Plateau, [1] is a prominent volcanic ridge and oceanic plateau extending between the Northern and the Central Indian Ocean. Laccadive is an anglicized adaptation of the word Lakshadweep which means "One Hundred Thousand Islands".
A bathymetric chart is a type of isarithmic map that depicts the submerged bathymetry and physiographic features of ocean and sea bottoms. [1] Their primary purpose is to provide detailed depth contours of ocean topography as well as provide the size, shape and distribution of underwater features.