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Vanadium Isotopes : A Proxy for Ocean Oxygen Variations, PDF eBook

Vanadium Isotopes : A Proxy for Ocean Oxygen Variations PDF

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Vanadium isotope ratios (51V/50V) have potential to provide information about changes in past ocean oxygen contents.

In particular, V isotopes may find utility in tracing variations at non-zero oxygen concentrations because the redox couple that controls V elemental and isotopic abundances in seawater (vanadate-vanadyl) appears to operate around 10M O2.

This characteristic sets V isotopes apart from many other metal isotope redox proxies that require more reducing conditions to register significant changes in their isotope budgets.

The oxygen abundance sensitivity range of V isotopes suggests that this paleoproxy could be particularly useful in tracing marine oxygenation changes throughout the Phanerozoic and potentially beyond.

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