Using fossil micrometeorites to examine the ancient Earth environment

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This project aims to use fossil micrometeorites to provide fundamental new data on changes in the chemistry of the ancient Earth's upper atmosphere before, during and after the Great Oxidation Event, the most significant atmospheric change in Earth’s history. This would provide insights into variations in the extent of interaction between the upper and lower atmosphere across the Great Oxidation Event. The project will also use these micrometeorites to investigate how the flux, composition and sources of extra-terrestrial material arriving on Earth changed over time.