Every few years I hear a story that reminds me of something I learned in a Geology class a very long time ago. I don't know if it is widely known but every time I bring it up it tends to surprise people. I am still looking for an explaination.
The earth's magnetic field reverses on occasion (100k to millions of years). It seems to flip over a very short period of time. The direction can be monitored by historical rock formations (sea bed).
When I first heard about this, I thought the Geologist/professor had some type of misunderstanding of the topic - I couldn't be it was possible. Then, after confirming it, I thought it would be explained within a few years because scientific knowledge was growing so quickly. Well, here we are more than 30 years later and still no answer.
Does anyone have a theory to explain what causes the magnetic field reversal?
Read more at: http://en.wikipedia.org/wiki/Earth's_magnetic_field#Magnetic_field_reversals
The earth's magnetic field reverses on occasion (100k to millions of years). It seems to flip over a very short period of time. The direction can be monitored by historical rock formations (sea bed).
When I first heard about this, I thought the Geologist/professor had some type of misunderstanding of the topic - I couldn't be it was possible. Then, after confirming it, I thought it would be explained within a few years because scientific knowledge was growing so quickly. Well, here we are more than 30 years later and still no answer.
Does anyone have a theory to explain what causes the magnetic field reversal?
Read more at: http://en.wikipedia.org/wiki/Earth's_magnetic_field#Magnetic_field_reversals
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