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3 December, 00:40

Suppose a magnetic reversal accoured today.

How would new rocks at mid ocean ridges

differ from rocks that formed last year

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Answers (1)
  1. 3 December, 00:43
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    They would have the magnetic parts of the rocks oriented differently. This leaves a trace that allow scientists to find out how often this actually happens (as far as I remember, it's on average once in 800 000 years)
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