A new study suggests that plate tectonics and subduction processes played a crucial role in Earth's atmospheric oxygenation, with evidence showing that changes in tectonic subduction align with historical oxygen level increases. The research indicates that as Earth cooled over time, the evolution of plate tectonics helped regulate oxygen levels through chemical reactions between the atmosphere and Earth's interior. This adds another piece to the complex puzzle of how Earth developed its oxygen-rich atmosphere over billions of years.
Background
Earth's atmosphere became oxygen-rich over billions of years through a complex process involving both biological and geological factors. The Great Oxygenation Event around 2.4-2.0 billion years ago marked a significant increase in atmospheric oxygen, but the complete picture involves multiple contributing mechanisms.
- Source
- Ars Technica
- Published
- May 27, 2026 at 02:30 AM
- Score
- 7.0 / 10