Tag Archives: magnetic minerals

How long was the last magnetic reversal – and why might subducting slabs have had a say in what it looked like?

Posted on August 14, 2019 by Chris Rowan

A new paper on the chronology of the last magnetic reversal concludes it took 20,000 yrs, and there were two distinct excursions – where the field becomes weak and disorganized, but it recovers without reversing polarity – before the main event about … Continue reading →