#geography #oceanography #GS1
1. CONTINENTAL SHELF.
◇ Continental shelf is gently sloping (gradient of 1°C or less) seaward extension of Continental plate.
◇ Shelves cover 7.5% of total area of the Oceans.
◇ Shelf typically ends at very steep slope, called the Shelf break.
2. CONTINENTAL SLOPE.
◇ Gradient of slope region varies between 2-5°C.
◇ Continental slope boundary indicates the end of Continents.
◇ Canyons and trenches are observed in this region.
3. CONTINENTAL RISE.
◇ Continental slope gradually loses its steepness with depth.
◇ When slope reaches a level of between 0.5° and 1°, it is referred to as the Continental rise.
4. DEEP SEA PLAIN or ABYSSAL PLAIN.
◇ Deep sea plain are gently sloping areas of the ocean basins.
◇ They are flattest and smoothest regions of the world.
◇ These plains are covered with fine - grained sediments like Clay and silt.
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