Low pCO2 in the pore water, not in the Archean air

@article{Dauphas2011LowPI,
  title={Low pCO2 in the pore water, not in the Archean air},
  author={Nicolas Dauphas and James F Kasting},
  journal={Nature},
  year={2011},
  volume={474},
  pages={E1-E1}
}
Arising from M. T. Rosing, D. K. Bird, N. H. Sleep & C. J. Bjerrum 464, 744–747 (2010)10.1038/nature08955The solar luminosity during the Archean (3.8 to 2.5 billion years ago) was 20–25% lower than at present, and was probably compensated, at least in part, by a stronger greenhouse effect. Rosing et al. estimate the Archean partial pressure of carbon dioxide to have been about ≈ 10−3 bar, on the basis of the simultaneous occurrence of magnetite (Fe3O4) and siderite (FeCO3) in banded iron… CONTINUE READING

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