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Melting glaciers, enough sand to bury London, and ancient ecosystem engineering
Date:3/19/2012

Boulder, Colo., USA - Highlights include evidence of the sensitivity of Greenland Ice Sheet outlet glaciers to rising air temperatures and a call for further understanding of the bathymetry beneath them before accurate predictions of sea-level rise can be made; findings in the North Sea of the largest body of sand on Earth, large enough to cover the whole of London six meters deep; and the unexpected discovery of the oldest evidence of animals burrowing in search of food.

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The oldest evidence of bioturbation on Earth
Vladimir Rogov et al., Institute of Petroleum Geology and Geophysics, Koptyug Avenue 3, Novosibirsk 630090, Russia. Posted online 19 Mar. 2012; doi: 10.1130/G32807.1.

The Ediacaran Period, an interval in Earth's history after the Snowball Earth glaciations but before the Cambrian radiations, marks the introduction of complex macroscopic organisms synchronously in unrelated groups. It has been proposed that the increase in size in marine organisms was triggered by the oxygenation of Ediacaran oceans. New research shows that animals, rather than a late Neopr
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Contact: Christa Stratton
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Geological Society of America
Source:Eurekalert

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