domingo, 26 de septiembre de 2010

Taking a new look at old digs: Trampling animals may alter Stone Age sites

ScienceDaily (2010-09-25) -- Stone Age tools discovered embedded in the ground could mislead archaeologists about a Prehistoric site's age. A new study on animal trampling found that water buffalo and goats significantly disturbed stone tools scattered on watery ground, says archaeologists. The animals pushed the tools as much as 21 centimeters deeper than originally positioned -- potentially altering a site's interpretation thousands of years, and suggesting archaeologists should reanalyze some previous discoveries.

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