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Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
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Paleoproterozoic snowball earth: extreme climatic and geochemical global change and its biological consequences

J L Kirschvink1, E J Gaidos, L E Bertani

  • 1Division of Geological Sciences, Jet Propulsion Laboratory, and Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA. kirschvink@caltech.edu

Proceedings of the National Academy of Sciences of the United States of America
|March 4, 2000
PubMed

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