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Vanadium Isotopes: A Proxy for Ocean Oxygen Variations.
・ISBN 978-1-108-79794-8 paper GB£ 18.00
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| 著者・編者 | Nielsen, Sune G., |
|---|---|
| シリーズ | (Elements in Geochemical Tracers in Earth System Science) |
| 出版社 | (Cambridge University Press, UK) |
| 出版年月 | 2021 |
| ページ数 | 32 pp. |
| 言語 | ENG |
| ニュース番号 | ＜A03-84668＞ |
解説
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.