Cryoconite pans on Snowball Earth: supraglacial oases for Cryogenian eukaryotes?

@article{Hoffman2016CryoconitePO,
  title={Cryoconite pans on Snowball Earth: supraglacial oases for Cryogenian eukaryotes?},
  author={Paul F. Hoffman},
  journal={Geobiology},
  year={2016},
  volume={14 6},
  pages={531-542}
}
Geochemical, paleomagnetic, and geochronological data increasingly support the Snowball Earth hypothesis for Cryogenian glaciations. Yet, the fossil record reveals no clear-cut evolutionary bottleneck. Climate models and the modern cryobiosphere offer insights on this paradox. Recent modeling implies that Snowball continents never lacked ice-free areas. Wind-blown dust from these areas plus volcanic ash were trapped by snow on ice sheets and sea ice. At a Snowball onset, sea ice was too thin to… CONTINUE READING