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Integrated geochemical-petrographic insights from component-selective {delta}238U of Cryogenian marine carbonates

Emerging geochemical proxies have improved our understanding of the broad-scale history of Earth’s oxygenation. However, paleoredox work does not always include extensive consideration of sample preservation and paleoenvironmental setting. This is particularly an issue with marine carbonates, which although being potentially ideal ocean redox archives, are commonly altered during diagenesis.
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