A palaeotemperature curve for the Precambrian oceans based on silicon isotopes in cherts

@article{Robert2006APC,
  title={A palaeotemperature curve for the Precambrian oceans based on silicon isotopes in cherts},
  author={François Robert and Marc Chaussidon},
  journal={Nature},
  year={2006},
  volume={443},
  pages={969-972}
}
The terrestrial sediment record indicates that the Earth’s climate varied drastically in the Precambrian era (before 550 million years ago), ranging from surface temperatures similar to or higher than today’s to global glaciation events. The most continuous record of sea surface temperatures of that time has been derived from variations in oxygen isotope ratios of cherts (siliceous sediments), but the long-term cooling of the oceans inferred from those data has been questioned because the… 

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