What is it about?
Climate recovery was sluggish following the end-Permian mass extinction, with elevated temperatures persisting for over 5 million years. We find evidence that elevated reverse weathering may have contributed to this prolonged warm interval by retaining carbon in the ocean-atmosphere system. Additionally, we observe deviations in the lithium isotopic composition of various archives following the end-Permian mass extinction, forcing a re-evaluation of the current framework used to interpret the lithium isotopic composition of sedimentary archives.
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Photo by Devon Janse van Rensburg on Unsplash
Why is it important?
Our findings indicate that changes in reverse weathering can have significant impacts on global climate.
Perspectives
It's always exciting to try and peer into deep time, especially when it's related to a mass extinction. Using a well-established proxy in a new context was a rewarding and worthwhile endeavor, I think it allowed for a lot of creativity. Also, we got to go around the world and hit rocks with hammers! I truly cannot think of anything more fun.
Sofia Rauzi
University of Waikato
Read the Original
This page is a summary of: Lithium isotopic evidence for enhanced reverse weathering during the Early Triassic warm period, Proceedings of the National Academy of Sciences, July 2024, Proceedings of the National Academy of Sciences,
DOI: 10.1073/pnas.2318860121.
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