Brevia

The Age of the Sahara Desert

Science  10 Feb 2006:
Vol. 311, Issue 5762, pp. 821
DOI: 10.1126/science.1120161

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Abstract

In the Sahara region, the age of onset of the desert condition has been uncertain until now. Here we report on the discovery of 7,000,000-year-old eolian dune deposits from the northern Chad Basin. This geological archive is the oldest known evidence for desert occurrence in the Sahara.

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