Question
Distinguish between Abyssal plains and Ocean deeps.
| S.No. | Abyssal plain | Ocean deeps |
| (i) | Abyssal plains are under water plains found on the deep ocean floor. | These are the deepest part of the oceans. |
| (ii) | These plains extend from continental rise to the mid-oceanic ridges. | Trenches are the deepest part of the oceans. They occupy about 7% of the total relief of the ocean floor. |
| (iii) | Abyssal plains are usually covered by the thick layer of sediments composed of clay, silt, and sand. | These are sediment free. So most trenches are V-shaped with steep sides. |
| (iv) | Abyssal hills, sea mounts, guyots, coral atoll, etc., are the characteristic features. | epicenter of the great earthquakes is all found in the trenches. |
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Silt deposits are less at estuaries than deltas.