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Article: MICROFOSSILS CHALLENGE PREVAILING VIEWS OF THE EFFECTS OF 'SNOWBALL EARTH'

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US Fed News Service, Including US State News
Article date:
July 1, 2009
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SANTA BARBARA, Calif., May 26 -- NASA's Earth Observatory division issued the following media alert:

New fossil findings discovered by scientists at UC Santa Barbara challenge prevailing views about the effects of "Snowball Earth" glaciations on life, according to an article in the June issue of the journal Nature Geoscience.

By analyzing microfossils in rocks from the bottom of the Grand Canyon, the authors have challenged the view that has been generally assumed to be correct for the widespread die-off of early life on Earth.

"Snowball Earth" is the popular term for glaciations that occurred between approximately 726 and 635 million years ago and are hypothesized to have entombed the ...

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