The chromium isotope system as a tracer of ocean and atmosphere redox:
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 paleoredox proxy has required recent revision. However, the basic...
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| Hauptverfasser: | , , , |
|---|---|
| Format: | Elektronisch E-Book |
| Sprache: | English |
| Veröffentlicht: |
Cambridge
Cambridge University Press
2021
|
| Schriftenreihe: | Cambridge elements. Elements in geochemical tracers in Earth system science
|
| Schlagworte: | |
| Online-Zugang: | DE-12 DE-92 Volltext |
| Zusammenfassung: | 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 paleoredox 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 |
| Beschreibung: | Title from publisher's bibliographic system (viewed on 05 Feb 2021) |
| Beschreibung: | 1 Online-Ressource |
| ISBN: | 9781108870443 |
| DOI: | 10.1017/9781108870443 |
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| 520 | 3 | |a 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 paleoredox 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 | |
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| author | Bauer, Kohen W. ca. 20./21. Jh Planavsky, Noah J. ca. 20./21. Jh Reinhard, Christopher T. ca. 20./21. Jh Cole, Devon B. ca. 20./21. Jh |
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| discipline | Chemie / Pharmazie |
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| doi_str_mv | 10.1017/9781108870443 |
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| id | DE-604.BV047178190 |
| illustrated | Not Illustrated |
| index_date | 2024-07-03T16:45:07Z |
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| isbn | 9781108870443 |
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| spelling | Bauer, Kohen W. ca. 20./21. Jh. Verfasser (DE-588)1228638314 aut The chromium isotope system as a tracer of ocean and atmosphere redox Kohen W. Bauer, Noah J. Planavsky, Christopher T. Reinhard, Devon B. Cole Cambridge Cambridge University Press 2021 1 Online-Ressource txt rdacontent c rdamedia cr rdacarrier Cambridge elements. Elements in geochemical tracers in Earth system science Title from publisher's bibliographic system (viewed on 05 Feb 2021) 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 paleoredox 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 Chromium ; Isotopes Oxidation-reduction reaction Environmental geochemistry Planavsky, Noah J. ca. 20./21. Jh. Verfasser (DE-588)1228638705 aut Reinhard, Christopher T. ca. 20./21. Jh. Verfasser (DE-588)122863985X aut Cole, Devon B. ca. 20./21. Jh. Verfasser (DE-588)1228640483 aut Erscheint auch als Druck-Ausgabe 978-1-108-79257-8 https://doi.org/10.1017/9781108870443 Verlag URL des Erstveröffentlichers Volltext |
| spellingShingle | Bauer, Kohen W. ca. 20./21. Jh Planavsky, Noah J. ca. 20./21. Jh Reinhard, Christopher T. ca. 20./21. Jh Cole, Devon B. ca. 20./21. Jh The chromium isotope system as a tracer of ocean and atmosphere redox |
| title | The chromium isotope system as a tracer of ocean and atmosphere redox |
| title_auth | The chromium isotope system as a tracer of ocean and atmosphere redox |
| title_exact_search | The chromium isotope system as a tracer of ocean and atmosphere redox |
| title_exact_search_txtP | The chromium isotope system as a tracer of ocean and atmosphere redox |
| title_full | The chromium isotope system as a tracer of ocean and atmosphere redox Kohen W. Bauer, Noah J. Planavsky, Christopher T. Reinhard, Devon B. Cole |
| title_fullStr | The chromium isotope system as a tracer of ocean and atmosphere redox Kohen W. Bauer, Noah J. Planavsky, Christopher T. Reinhard, Devon B. Cole |
| title_full_unstemmed | The chromium isotope system as a tracer of ocean and atmosphere redox Kohen W. Bauer, Noah J. Planavsky, Christopher T. Reinhard, Devon B. Cole |
| title_short | The chromium isotope system as a tracer of ocean and atmosphere redox |
| title_sort | the chromium isotope system as a tracer of ocean and atmosphere redox |
| url | https://doi.org/10.1017/9781108870443 |
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