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Earth's past magnetic field

earths past magnetic field

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#1    Karlis


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Posted 08 December 2012 - 12:49 PM

Ancient Cooking Stones Reveal Earth's Past Magnetic Field.
Cooking stones from New Zealand could reveal the magnetic history of the Earth going back hundreds of years, new research suggests. The stones got so hot that the minerals in them with magnetic properties would have aligned with the Earth's magnetic field at the time.

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