Science news articles about 'magnetic field reversal'

... what may drive it to occasionally reverse direction. The main magnetic field, generated by turbulent currents ... molten lava orients along the prevailing field, then becomes locked into place as the lava ...

Ancient lava flows are guiding a better understanding of what generates and controls the Earth's magnetic field - and what may drive it to occasionally reverse direction...

... basalt, scientists know that the Earth`s magnetic field reverses at irregular intervals, ranging from tens ... data, scientists estimate that the last magnetic field reversal occurred about 780,000 years ...

... time interval compared with the respectable age of our Planet or even with the time of the last magnetic field reversal, some 780000 years ago. Scientists from the Helmholtz Centre GFZ and other ...

... end-Permian mass extinction 250 million years ago, nearly 90 percent of life on Earth was extinguished, and everything from magnetic field reversals to supervolcanoes has been invoked to explain it.