Gold and other precious metals are on the move from Earth's core

Volcanic activity in Hawaii is revealing a surprising secret. Scientists have found that gold and other precious metals, long thought to be stuck deep within Earth's core, are actually making their way to the surface. This discovery came from a study that analyzed lava flows from Hawaii's volcanoes. The lava contains chemical signs of metals like ruthenium and gold, which have been trapped in the Earth’s core for billions of years. This means that volcanic activity might be the key to unlocking these hidden treasures. The research team compared their findings with earlier studies. They looked at anomalies in tungsten isotopes found in volcanic rocks. The new data supports the idea that materials from the core are slowly leaking into the mantle. This challenges the old belief that the core is a sealed, isolated reservoir. Instead, it suggests that the Earth’s internal structure is more dynamic and interconnected than previously thought.

Professor Matthias Willbold highlighted the scale of this process. He noted that huge volumes of super-heated mantle material, amounting to several hundreds of quadrillion metric tons of rock, originate at the core-mantle boundary. This material rises to the Earth’s surface, forming ocean islands like Hawaii. This dramatic movement of rock and metal from the Earth’s deepest layers to its surface helps explain some of the volcanic activity observed on these islands. The findings have big implications for understanding the Earth’s history. The leakage of metals from the core suggests that some elements now found on the Earth’s surface were part of the planet’s original building blocks. This changes how we think about the distribution of precious metals in the Earth’s crust and the processes that shaped the planet’s geological features over billions of years. The research opens up new questions about the Earth’s early history. It raises the possibility that the processes observed today have also been operating in the past. This shift in perspective could change how scientists study the history of our planet, particularly in terms of how materials have moved between the core, mantle, and surface over geological time scales.

Actions