Stretching the envelope of past surface environments: Neoproterozoic glacial lakes from Svalbard.

@article{Bao2009StretchingTE,
  title={Stretching the envelope of past surface environments: Neoproterozoic glacial lakes from Svalbard.},
  author={Huiming Bao and Ian J Fairchild and Peter M. Wynn and Christoph Sp{\"o}tl},
  journal={Science},
  year={2009},
  volume={323 5910},
  pages={119-22}
}
The oxygen isotope composition of terrestrial sulfate is affected measurably by many Earth-surface processes. During the Neoproterozoic, severe "snowball" glaciations would have had an extreme impact on the biosphere and the atmosphere. Here, we report that sulfate extracted from carbonate lenses within a Neoproterozoic glacial diamictite suite from Svalbard, with an age of approximately 635 million years ago, falls well outside the currently known natural range of triple oxygen isotope… CONTINUE READING
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