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Vanadium isotopes : a proxy for ocean oxygen variations.
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ISBN: 1108797946 9781108797948 9781108863438 Year: 2021 Publisher: Cambridge Cambridge University Press

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Vanadium isotopes : a proxy for ocean oxygen variations
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ISBN: 1108852971 110885270X 1108863434 Year: 2020 Publisher: Cambridge : Cambridge University Press,

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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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Non-Traditional Stable Isotopes
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ISBN: 3110545632 9783110545630 9780939950980 0939950987 Year: 2017 Publisher: Berlin Boston

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The development of multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) makes it possible to precisely measure non-traditional stable isotopes. This volume reviews the current status of non-traditional isotope geochemistry from analytical, theoretical, and experimental approaches to analysis of natural samples. In particular, important applications to cosmochemistry, high-temperature geochemistry, low-temperature geochemistry, and geobiology are discussed. This volume provides the most comprehensive review on non-traditional isotope geochemistry for students and researchers who are interested in both the theory and applications of non-traditional stable isotope geochemistry.

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