Biomarker Evidence for Photosynthesis During Neoproterozoic Glaciation

  title={Biomarker Evidence for Photosynthesis During Neoproterozoic Glaciation},
  author={Alison N. Olcott and Alex L. Sessions and Frank A. Corsetti and Alan J Kaufman and Tolentino Flavio de Oliviera},
  pages={471 - 474}
Laterally extensive black shales were deposited on the São Francisco craton in southeastern Brazil during low-latitude Neoproterozoic glaciation ∼740 to 700 million years ago. These rocks contain up to 3.0 weight % organic carbon, which we interpret as representing the preserved record of abundant marine primary productivity from glacial times. Extractable biomarkers reflect a complex and productive microbial ecosystem, including both phototrophic bacteria and eukaryotes, living in a… 

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