2:37:29 
2023-10-21 
539
A joint team of geochemists has found evidence of high levels of helium-3 in rocks on Baffin Island, which means the Earth's core is leaking.
In the paper published in Nature, the team from Woods Hole Oceanographic Institution and Caltech describes their study of helium-3 and helium-4 in the Canadian Arctic Archipelago.
Previous researchers found trace elements of helium-3 in lava flows on Baffin Island, the fifth largest island in the world, indicating possible leakage of the Earth's core. This is because it is an ancient isotope, and was prevalent during the period in which the Earth was formed.
But because of its nature, the helium-3 that makes its way to the surface soon escapes into the atmosphere and disappears into space. Therefore helium-3 is rare. If it is found on the surface, chances are good that it made its way out of the core.
Based on the possibility of a leak in the Earth's core, the science team ventured to Baffin Island and began testing multiple lava flows.
They found much higher levels of helium-3 than observed in previous research efforts, higher than anywhere else on Earth. They also found high ratios of helium-3 to helium-4 (a common isotope), the highest ratio ever measured in terrestrial rocks.
The researchers point out that these high percentages are another factor that indicates that helium-3 is leaking from the core.
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