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The study published in Nature Geoscience shows that the core of the earth, which was then young and fluid, began to harden, strengthening the magnetic field and preventing the earth from breaking up due to solar winds and the abundant radiation in space.
"Together with 14 other directional datasets suggesting a hyper-reversal frequency, these exceptionally low field strengths suggest anomalous field behavior, consistent with predictions of geodynamic simulations, high thermal conductivities, and an ediacaran seizure age of inner nuclear growth," the researchers write Study.
MOON DISCOVERY: ANTIQUE 4 BILLION YEAR RELIKA FUND ON LUNAR SURFACE
Researchers studied plagioclase and clinopyroxene samples from eastern Quebec, Canada, and found that they Magnetic needles of about 50 to 100 nanometers contain s in size, surprisingly researchers.
"These tiny magnetic particles are ideal magnetic recorders," said study co-author John Tarduno told LiveScience. "When they cool down, they save a record of Earth's magnetic field that has been sustained over billions of years."
They found that the particles in the crystals had a very low charge, Tarduno added, noting that the Earth was present at a "critical point where the dynamo has almost completely collapsed."
As soon as the geodynamo, which caused the growth and maintenance of the magnetic field, took a proverbial leap from the hardening of the Earth's core, the charged particles continued to move and the magnetic field was amplified.
LIFE ON EARTH CAN COME WITH AN OLD PLANET MORE THAN 4 BILLION YEARS BEFORE
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