glacial sediments
EurekAlert [USA], 16-Jun-2010
How do we begin to understand what early life was like on Earth about
700 million years ago as our planet shifted from an oxygen-free and
probably ice-covered realm to the oxygen-rich world that we know today?
One geochemist who decodes the early record of life on Earth has found a
method featuring a combination of chemical analyses for a significantly
clearer picture of this dynamic environment. Alison Olcott Marshall of
the University of Kansas presented her findings today at the Goldschmidt
Conference in Knoxville, Tenn. The conference is attended by several
thousand geochemists and features new scientific discoveries regarding
the Earth, energy and the environment. It is hosted by the University of
Tennessee, Knoxville, and Oak Ridge National Laboratory.
http://www.eurekalert.org/pub_releases/2010-06/uota-dpa060810.php
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