Almost 350 million years ago, something strange happened to the Earth's magnetic field. Scholars speculate that it was
Devonian period (420–360 Ma) long agointrigues scientists. One of his biggest mysteries is why the rocks of that time do not have traces of the Earth's magnetic field. For a long time, scientists assumed that this was due to the fact that the rocks had lost their "magnetic memory" for some reason. In a new study, geologists have suggested that the heating from the collision of the continents reset it.
Scientists conducted a study of paleointensityvolcanic rocks. They confirmed that the magnetic field was much weaker than today. As a result, the researchers suggested that this was accompanied by changes in polarity.
Scientists have collected Middle and Upper Devonian samples in Germany, Poland and Canada that show low conodont alteration indices, indicating low thermal maturity.
The Earth's magnetic field plays an important role in everyday life. It protects the atmosphere and the planet from solar storms, which consists of charged particles that are dangerous for modern technology.
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