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The chromium isotope system as a tracer of ocean and atmosphere redox

Record Type:	Electronic resources : Monograph/item
Title/Author:	The chromium isotope system as a tracer of ocean and atmosphere redox/ Kohen W. Bauer ... [et al.].
other author:	Bauer, Kohen W.
Published:	Cambridge :Cambridge University Press, : 2021.,
Description:	26 p. :ill., digital ;23 cm.
Notes:	Title from publisher's bibliographic system (viewed on 05 Feb 2021).
Subject:	Chromium - Isotopes. -
Online resource:	https://doi.org/10.1017/9781108870443
ISBN:	9781108870443

The chromium isotope system as a tracer of ocean and atmosphere redox
The chromium isotope system as a tracer of ocean and atmosphere redox[electronic resource] /Kohen W. Bauer ... [et al.]. - Cambridge :Cambridge University Press,2021. - 26 p. :ill., digital ;23 cm. - Cambridge elements. Elements in geochemical tracers in Earth system science,2515-7027. - 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.

ISBN: 9781108870443Subjects--Topical Terms:

3729421
Chromium
--Isotopes.

LC Class. No.: QD181.C7

Dewey Class. No.: 546.532

The chromium isotope system as a tracer of ocean and atmosphere redox
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245 0 4 $a The chromium isotope system as a tracer of ocean and atmosphere redox $h [electronic resource] / $c Kohen W. Bauer ... [et al.].
260 $a Cambridge : $b Cambridge University Press, $c 2021.
300 $a 26 p. : $b ill., digital ; $c 23 cm.
490 1 $a Cambridge elements. Elements in geochemical tracers in Earth system science, $x 2515-7027
500 $a Title from publisher's bibliographic system (viewed on 05 Feb 2021).
520 $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.
650 0 $a Chromium $x Isotopes. $3 3729421
650 0 $a Oxidation-reduction reaction. $3 628912
650 0 $a Environmental geochemistry. $3 544130
700 1 $a Bauer, Kohen W. $3 3729420
830 0 $a Cambridge elements. $p Elements in geochemical tracers in Earth system science. $3 3673870
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