Subduction, a crucial geological process on Earth, may have begun hundreds of millions of years earlier than traditionally believed.



Summary

New research suggests that subduction, where one tectonic plate slides beneath another, could have started significantly earlier than the generally accepted 3 billion years ago. This challenges existing models of early Earth’s geodynamics. Analyzing ancient rocks and their chemical composition provides clues about the timing and intensity of past subduction events. An earlier onset of subduction implies a more active and dynamic early Earth, potentially influencing the planet’s evolution, including the development of continents, the composition of the atmosphere, and the emergence of life.

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