Vanadium Isotopes: A Proxy for Ocean Oxygen Variations (Elements in Geochemical Tracers in Earth System Science)
Cambridge University Press, 1/28/2021
EAN 9781108797948, ISBN10: 1108797946
Paperback, 32 pages, 22.9 x 15.2 x 0.3 cm
Language: English
Originally published in English
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.
1. Introduction
2. Marine elemental and isotopic cycle of vanadium
3. Analytical methodologies
4. Potential for applications of V isotopes to reconstruct past ocean redox.