Surprise the planet reversed hundreds of times right in the Solar System

Throughout 4.5 billion years of history, the planet's Arctic and Antarctic periods have changed places . 26 times in every million years. More surprisingly, it is the planet we live in.

A study published online in the journal Earth and Planetary Science Letters has revealed a frenetic phase of the Earth: continually reversing the magnetic pole: Arctic Antarctica and vice versa. Quite surprisingly, this period fell right in the period of evolutionary boom - the biodiversity of species, that is the Cambrian period.

Authors from the Paris Institute of Geophysics (France) and the Russian Academy of Sciences collected sediment samples from a ledge in northeastern Siberia.

Our planet 500 million years ago, a period of continuous magnetic polarization - (photo: ACIENT EARTH GLOBE)

At the lab, they determined the orientation of magnetic particles trapped in sediment by slowly heating them to extremely high temperatures to demagnetize. The orientation of magnetic particles will reveal the direction of the magnetic field at the time of sedimentation. They then dated the trilobite fossils in each layer of sediment to rewrite the planet's whirling history.

Sediments have revealed an incredible rebellion phase of the Earth, falling before 500 million years ago. At that time, the Earth continuously reversed two magnetic poles - the North Pole and Antarctica - up to 26 times every million years. That terrible period ended between 495 million and 500 million years ago, and our planet began to become more docile, reversing only 1-2 times every million years.

The new discovery shows that our planet has reversed many times more than previously thought, at least a hundred times throughout its whirling history.

This frequent polarity reversal is caused by changes in temperature conditions in the outer core of liquefied iron, controlled by the Earth's mantle . However, scientists also discovered that from 600-700 million years ago, our planet's core has begun to cool and solidify, so it is likely that the reversal will be less likely.

But Earth's last polar magnetic reversal was recorded 780,000 years ago, so it is likely that the future world will soon face another reversal. However, according to lead author Yves Gallet, research director of the French National Center for Scientific Research (Paris Institute of Geophysics), the upcoming polar reversal may be early for the earth but not soon. for humans, because it's a very slow process.

Earlier, a study published earlier this year by the National Center for Environmental Information, under the U.S. National Oceanic and Atmospheric Administration (NOAA), showed that the true North Pole of the Earth is capturing. head left the familiar position on Canadian territory and drifted toward Siberia (Russia).

• What happens when polarity reversal earth?
• The Earth's magnetic field is faster than humans think