Researchers have identified a link between ancient atmospheric shifts and Earth's mantle chemistry, shedding light on the planet's evolution. An international team of scientists has uncovered an important link between Earth’s early atmosphere and the chemistry of its deep mantle. Led by resear
Tiny mineral inclusions picture for the first time oxygen accumulated in the atmosphere and changed the composition of the mantle. Credit: Hugo Moreira / Nature Geoscience
However, there has been little research into how atmospheric changes have left their mark on the Earth’s mantle.Tectonic Processes and Earth’s Mantle, examined the role of plate tectonics – the process by which our planet’s outer shell moves and reshapes its surface – in cycling and exchanging elements between the atmosphere, Earth’s surface, and the deep mantle. Until now, reliable methods to understand these interactions were elusive.
“Moreover, it raises fascinating questions about the role that oxygen played in shaping our planet’s history and the conditions that paved the way for life as we know it.”The research team used the ID21 beamline at the European Synchrotron Radiation Facility in France to analyze the sulfur state in minerals found in two-billion-year-old zircon crystals from the Mineiro Belt in Brazil, which acted as time capsules, preserving their original composition.
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