This is part of the system of mid-oceanridges that form as the tectonic plates of the Earth's crust move apart-a process known as sea floor spreading.
印度洋脊是中大洋脊的一部分,中大洋脊是地壳分离的地球板块形成的。这一形成过程被称为海底扩张。
2
Much of the activity between the continental shelves takes place deep underwater at the mid-oceanridges.
大部分的大陆架的活动发生在深水下的大洋洋底的海脊。
3
As the rocks cool from lava, for instance at the deep mid-oceanridges where the earth's surface plates are formed, crystals line up with the direction of the magnetic field.