Nature – Sunet al. (2025): Enhanced continental weathering drove a transient oxygenation event during the largest Ediacaran carbon isotope excursion
He Sun, Yilin Xiao, Yangyang Wang, Fengtai Tong, Hai-Ou Gu, Can Ge, Fangyue Wang, Zhihui An, Erhao Shan, Meng Zhang, Tingyu Yang and Pengju Liu IN: Communications Earth & Environment, https://doi.org/10.1038/s43247-025-02420-z
The largest Ediacaran carbon isotope excursion (the Shuram excursion, SE) has been proposed to coincide with a transient oceanic oxygenation event. However, the mechanisms responsible for the SE and the associated oxygenation remain unclear. In this study, the authors investigated the role of silicate weathering during the SE by measuring Li isotope compositions from two suites of marine carbonates in the Ediacaran Doushantuo sections.