Microbial life and biogeochemical cycling on land 3,220 million years ago

  title={Microbial life and biogeochemical cycling on land 3,220 million years ago},
  author={M. Homann and P. Sansjofre and M. V. van Zuilen and C. Heubeck and J. Gong and B. Killingsworth and Ian S. Foster and Alessandro Airo and Martin J. Van Kranendonk and M. Ader and S. Lalonde},
  journal={Nature Geoscience},
  • M. Homann, P. Sansjofre, +8 authors S. Lalonde
  • Published 2018
  • Geology
  • Nature Geoscience
  • The colonization of emergent continental landmass by microbial life was an evolutionary step of paramount importance in Earth history. Here we report direct fossil evidence for life on land 3,220 million years ago (Ma) in the form of terrestrial microbial mats draping fluvial conglomerates and gravelly sandstones of the Moodies Group, South Africa. Combined field, petrographic, carbon isotope and Raman spectroscopic analyses confirm the synsedimentary origin and biogenicity of these unique… CONTINUE READING
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