Researchers Collect Soil Samples Near Xi'an, China (IMAGE)

University of Arizona

Researchers Collect Soil Samples Near Xi'an, China

Caption

This hill of soil near Xi'an, China represents tens of thousands of years of deposition of a soil called loess. The researchers are collecting samples to use to reconstruct a record of the region's climate stretching 550,000 years into the past.

Credit

© 2010 J. Warren Beck

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