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British Wildlife is the leading natural history magazine in the UK, providing essential reading for both enthusiast and professional naturalists and wildlife conservationists. Published eight times a year, British Wildlife bridges the gap between popular writing and scientific literature through a combination of long-form articles, regular columns and reports, book reviews and letters.

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Academic & Professional Books  Earth System Sciences  Geosphere  Geophysics & Geochemistry

The Chromium Isotope System as a Tracer of Ocean and Atmosphere Redox

New
By: Kohen W Bauer(Author), Noah J Planavsky(Author), Christopher T Reinhard(Author), Devon B Cole(Author)
The Chromium Isotope System as a Tracer of Ocean and Atmosphere Redox
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  • The Chromium Isotope System as a Tracer of Ocean and Atmosphere Redox ISBN: 9781108792578 Paperback Feb 2021 Usually dispatched within 6 days
    £14.99
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Price: £14.99
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About this book

The stable chromium (Cr) isotope system has emerged over the past decade as a new tool to track changes in the amount of oxygen in earth's ocean-atmosphere system. Much of the initial foundation for using Cr isotopes (δ53Cr) as a palaeoredox proxy has required recent revision. However, the basic idea behind using Cr isotopes as redox tracers is straightforward – the largest isotope fractionations are redox-dependent and occur during partial reduction of Cr(VI). As such, Cr isotopic signatures can provide novel insights into Cr redox cycling in both marine and terrestrial settings. Critically, the Cr isotope system – unlike many other trace metal proxies – can respond to short-term redox perturbations (e.g., on timescales characteristic of Pleistocene glacial-interglacial cycles). The Cr isotope system can also be used to probe the earth's long-term atmospheric oxygenation, pointing towards low but likely dynamic oxygen levels for the majority of Earth's history.

Contents

1. Introduction
2. Basics of Cr speciation and isotope fractionations
3. A global Cr isotope mass balance?
4. Seawater Cr isotope values
5. The sedimentary Cr isotope record
6. Summary and future directions

Customer Reviews

New
By: Kohen W Bauer(Author), Noah J Planavsky(Author), Christopher T Reinhard(Author), Devon B Cole(Author)
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