Reading the Archive of Earth’s Oxygenation

Part of the series Frontiers in Earth Sciences pp 1111-1150


7.3 The Palaeoproterozoic Perturbation of the Global Carbon Cycle: The Lomagundi-Jatuli Isotopic Event

  • Victor A. MelezhikAffiliated withGeological Survey of NorwayCentre for Geobiology, University of Bergen Email author 
  • , Anthony E. FallickAffiliated withScottish Universities Environmental Research Centre
  • , Adam P. MartinAffiliated withNERC Isotope Geosciences Laboratory (NIGL)
  • , Daniel J. CondonAffiliated withNERC Isotope Geosciences Laboratory (NIGL)
  • , Lee R. KumpAffiliated withDepartment of Geosciences, Pennsylvanian State University
  • , Alex T. BrasierAffiliated withScottish Universities Environmental Research Centre
  • , Paula E. SalminenAffiliated withDepartment of Geosciences and Geography, University of Helsinki

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On Earth, carbon cycles through the land, ocean, atmosphere, living and dead biomass and the planet’s interior. The global carbon cycle can be divided into the tectonically driven geological cycle and the biological/physicochemical cycles. The former operates over millions of years, whereas the latter operate over much shorter time scales (days to thousands of years). Within the geological cycle, atmospheric carbon dioxide concentration is controlled by the balance between weathering, biological drawdown, size of sedimentary reservoir, subduction, metamorphism and volcanism over time periods of hundreds of millions of years.