MIT: Origins of Earth's Magnetic Field Remain a Mystery
April 09, 2020
April 09, 2020
CAMBRIDGE, Massachusetts, April 9 -- The Massachusetts Institute of Technology issued the following news on April 8:
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- The existence of a magnetic field beyond 3.5 billion years ago is still up for debate.
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Microscopic minerals excavated from an ancient outcrop of Jack Hills, in Western Australia, have been the subject of intense geological study, as they seem to bear traces of the Earth's magnetic field reaching as far back as 4.2 b . . .
* * *
- The existence of a magnetic field beyond 3.5 billion years ago is still up for debate.
* * *
Microscopic minerals excavated from an ancient outcrop of Jack Hills, in Western Australia, have been the subject of intense geological study, as they seem to bear traces of the Earth's magnetic field reaching as far back as 4.2 b . . .