The magnitude and duration of Late Ordovician-Early Silurian glaciation.

@article{Finnegan2011TheMA,
  title={The magnitude and duration of Late Ordovician-Early Silurian glaciation.},
  author={Seth Finnegan and Kristin Bergmann and John M. Eiler and D. S. Jones and David A Fike and Ian Eisenman and Nigel Hughes and Aradhna K. Tripati and Woodward W Fischer},
  journal={Science},
  year={2011},
  volume={331 6019},
  pages={903-6}
}
Understanding ancient climate changes is hampered by the inability to disentangle trends in ocean temperature from trends in continental ice volume. We used carbonate "clumped" isotope paleothermometry to constrain ocean temperatures, and thereby estimate ice volumes, through the Late Ordovician-Early Silurian glaciation. We find tropical ocean temperatures of 32° to 37°C except for short-lived cooling by ~5°C during the final Ordovician stage. Evidence for ice sheets spans much of the study… CONTINUE READING
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