Earth’s Core Is Leaking Gold Into Volcanoes, Scientists Say

Earth’s core is apparently a bit leakier than scientists expected. In a new study published in Nature, researchers describe evidence that traces of precious metals from Earth’s metallic core, including ruthenium and gold, are seeping up into volcanic rocks on the surface. The University of Göttingen-led team examined lava from Hawaii’s volcanic islands and discovered an unusually high concentration of a rare isotope: ruthenium-100, an isotope that’s more common in Earth’s core than in the rocky mantle. The isotope’s presence suggested that the lava had somehow picked up material from the planet’s deepest layer—more than 1,800 miles (2,900 kilometers) beneath your feet. “When the first results came in, we realized that we had literally struck gold,” said Nils Messling, a geochemist at the University of Göttingen, in a university release. “Our data confirmed that material from the core, including gold and other precious metals, is leaking into the Earth’s mantle above.” Earth’s core f ... Read full article.