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2016-01-15T01:17:10+05:30
Generally, according to the law of magnetism like poles repel each other while opposite poles attracts each other.
In the same way with the sea floor spreading, where there is the bands of magnetic material in the sea floor have opposite poles there will be less sea floor spreading we can observe. Similarly, where there is the bands of magnetic material in the sea floor have like poles there will be more sea floor spreading we can observe. (Due to the earth is a likely to a magnet at the centre of the earth, it will varies the poles of the magnetic material as we reach to height.)

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