Late Paleozoic oxygenation of marine environments supported by dolomite U-Pb dating

7 April, 2024
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Ben-Israel et al. develop a new proxy for oxygen levels in seawater, based on U-Pb dating of dolomite. They show a step-increase in O2 at 400 million years, supporting oceans that were largely oxygen-limited at the ‘dawn’ of animal life.

For the full paper on Nature Communications