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Chemical Characteristics of Sediments and Seawater

Kump, Lee R. and Kuznetsov, Anton B. and Gorokhov, Igor M. and Melezhik, Victor A. and Farkaš, Juraj and Chakrabarti, Ramananda and Jacobsen, Stein B. and Reinhard, Christopher T. and Lyons, Timothy W. and Rouxel, Olivier and Asael, Dan and Dauphas, Nicolas and van Zuilen, Mark and Schoenberg, Ronny and Tissot, François L. H. and Hannah, Judith L. and Stein, Holly J. (2012) Chemical Characteristics of Sediments and Seawater. In: Reading the Archive of Earth’s Oxygenation. Vol.3. Springer , Berlin , pp. 1457-1514. ISBN 978-3-642-29669-7.

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The transition from an anoxic to oxygenated atmosphere was arguably the most dramatic change in the history of the Earth. This “Great Oxidation Event” (Holland 2006) transformed the biogeochemical cycles of the elements by imposing an oxidative step in the cycles, creating strong redox gradients in the terrestrial and marine realms that energised microbial metabolism. Although much past research was focused on establishing when the rise of atmospheric oxygen took place, recognition that substantial mass-independent fraction (MIF) of the sulphur isotopes is restricted to the time interval before 2.45 Ga and requires an anoxic atmosphere (Farquhar et al. 2000, 2007; Mojzsis et al. 2003; Ono et al. 2003; Bekker et al. 2004) argues the atmosphere became permanently oxygenated at this time (Pavlov and Kasting 2002). A false-start to the modern aerobic biosphere and a “whiff” of atmospheric oxygen (Anbar et al. 2007) may have occurred in the latest Archaean, as reflected in a transient enrichment in the redox-sensitive element molybdenum in marine shales and a reduction in the extent of MIF precisely coincident with the peak in Mo and FeS_2 enrichment (Kaufman et al. 2007). Geochemical proxies are imperfect, and an earlier (c. 3 Ga) appearance of atmospheric oxygen is possible (Ohmoto et al. 2006) but disputed (Farquhar et al. 2007; Buick 2008).

Item Type:Book Section
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Reinhard, Christopher T.0000-0002-2632-1027
Dauphas, Nicolas0000-0002-1330-2038
Tissot, François L. H.0000-0001-6622-2907
Additional Information:© 2013 Springer-Verlag Berlin Heidelberg. First Online: 14 August 2012.
Subject Keywords:Black Shale; Chem Geol; Iron Isotope; Great Oxidation Event; Iron Isotope Fractionation
Record Number:CaltechAUTHORS:20180615-081536225
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87143
Deposited By: Tony Diaz
Deposited On:15 Jun 2018 16:04
Last Modified:15 Nov 2021 20:45

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