Isotope records reveal repeated shallow-water deoxygenation during the Late Ordovician extinction (IMAGE)

Science China Press

Isotope records reveal repeated shallow-water deoxygenation during the Late Ordovician extinction

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The stratigraphic records from the Wuke carbonate section in South China show two negative carbonate cerium isotope excursions associated with the two extinction pulses. Neodymium and lithium isotope records track accompanying changes in continental weathering.

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