Earth's Magnetic Field Almost Completely Collapsed 550 Million Years Ago

“The inner core is tremendously important,” he said. “Right before the inner core started to grow, the magnetic field was at the point of collapse, but as soon as the inner core started to grow, the field was regenerated.”In a recent paper, Tarduno and a team of researchers cited crucial dates in the inner core’s history. They also gave a precise age estimate for the collapse and regeneration.

A depiction of Earth, first without an inner core; second, with an inner core beginning to grow, around 550 million years ago; third, with an outermost and innermost inner core, around 450 million years ago. University of Rochester researchers used paleomagnetism to determine these two key dates in the history of the inner core, which they believe restored the planet’s magnetic field just before the explosion of life on Earth.

Paleomagnetism made this new understanding of Earth’s core possible, according to Tarduno. “Because we constrained the inner core’s age more accurately, we could explore the fact that the present-day inner core is actually composed of two parts,” he said. “Plate tectonic movements on Earth’s surface indirectly affected the inner core, and the history of these movements is imprinted deep within Earth in the inner core’s structure.

its decreased 85% since 2000, as the entire earths magnetic field is shifting, north magnetic pole is 500+ miles from where it was then. throwing off the planets jet streams and weather patterns trying to catch up... Why? SUN.

Damn that Climate Change is harsh. 🙄

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