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August 4, 2025

Supplemental Material: Upwelling-related ferruginous ooids, microbialites, and the Darriwilian tipping point of Ordovician climate

Xiaocong Luan et al.

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Key Points

The study highlights the connection between upwelling and the formation of ironstones during the Ordovician period.
Ferruginous ooids and microbialites were abundant, indicating a unique environmental setting in South China.
Fe-isotope analysis was used to investigate the climatic conditions and biological activity during the Darriwilian period.
Findings suggest that the changes in upwelling patterns could have played a crucial role in climate shifts during the Ordovician.

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Implication

This research uncovers the relationship between upwelling and ironstone formations in Ordovician times, suggesting significant climate implications.

Abstract

Ordovician, South China, ironstones, microbialites, upwelling, Fe-isotopes

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Cite This Study

Luan et al. (2025) studied this question.

synapsesocial.com/papers/689a0f93e6551bb0af8d0fe4 https://doi.org/10.1130/geol.s.29824973

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