Vanadium Isotopes A Proxy for Ocean Oxygen Variations Elements in Geochemical Tracers in Earth System Science Series
Langue : Anglais
Auteur : Nielsen Sune G.
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.
Date de parution : 01-2021
Ouvrage de 75 p.
23x15 cm
Disponible chez l'éditeur (délai d'approvisionnement : 14 jours).
Prix indicatif 22,46 €
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