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Article Dans Une Revue Earth-Science Reviews Année : 2016

Trace elements at the intersection of marine biological and geochemical evolution

Leslie J. Robbins
  • Fonction : Auteur
Stefan V. Lalonde
Noah J. Planavsky
  • Fonction : Auteur
Camille A. Partin
  • Fonction : Auteur
Christopher T. Reinhard
  • Fonction : Auteur
Brian Kendall
  • Fonction : Auteur
Clint Scott
  • Fonction : Auteur
Dalton S. Hardisty
  • Fonction : Auteur
Benjamin C. Gill
  • Fonction : Auteur
Daniel S. Alessi
  • Fonction : Auteur
Christopher L. Dupont
  • Fonction : Auteur
Mak A. Saito
  • Fonction : Auteur
Sean A. Crowe
  • Fonction : Auteur
Simon W. Poulton
  • Fonction : Auteur
Andrey Bekker
  • Fonction : Auteur
Timothy W. Lyons
  • Fonction : Auteur
Kurt O. Konhauser
  • Fonction : Auteur

Résumé

Life requires a wide variety of bioessential trace elements to act as structural components and reactive centers in metalloenzymes. These requirements differ between organisms and have evolved over geological time, likely guided in some part by environmental conditions. Until recently, most of what was understood regarding trace element concentrations in the Precambrian oceans was inferred by extrapolation, geochemical modeling, and/or genomic studies. However, in the past decade, the increasing availability of trace element and isotopic data for sedimentary rocks of all ages has yielded new, and potentially more direct, insights into secular changes in seawater composition - and ultimately the evolution of the marine biosphere. Compiled records of many bioessential trace elements (including Ni, Mo, P, Zn, Co, Cr, Se, and I) provide new insight into how trace element abundance in Earth's ancient oceans may have been linked to biological evolution. Several of these trace elements display redox-sensitive behavior, while others are redox-sensitive but not bioessential (e.g., Cr, U). Their temporal trends in sedimentary archives provide useful constraints on changes in atmosphere-ocean redox conditions that are linked to biological evolution, for example, the activity of oxygen-producing, photosynthetic cyanobacteria. In this review, we summarize available Precambrian trace element proxy data, and discuss how temporal trends in the seawater concentrations of specific trace elements may be linked to the evolution of both simple and complex life. We also examine several biologically relevant and/or redox-sensitive trace elements that have yet to be fully examined in the sedimentary rock record (e.g., Cu, Cd, W) and suggest several directions for future studies.
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insu-03685708 , version 1 (02-06-2022)

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Paternité - Pas de modifications

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Leslie J. Robbins, Stefan V. Lalonde, Noah J. Planavsky, Camille A. Partin, Christopher T. Reinhard, et al.. Trace elements at the intersection of marine biological and geochemical evolution. Earth-Science Reviews, 2016, 163, pp.323-348. ⟨10.1016/j.earscirev.2016.10.013⟩. ⟨insu-03685708⟩
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