Unveiling the Link: Earth's Atmosphere and Mantle Chemistry Interconnected

A new study led by researchers at the University of Portsmouth and University of Montpellier has revealed a connection between Earth's early atmosphere and the chemistry of its deep mantle. By investigating magmas formed in ancient subduction zones during the Great Oxidation Event (GOE), the team found that sediment recycling provided atmospheric access to the mantle, leading to increased oxidation of magma and altering the composition of the continental crust. The research sheds light on the evolution of life on Earth and the relationship between Earth's external and internal reservoirs.