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For those researchers working in the field of human history, the chronology of events remains a major element of reflection.

Archaeologists have access to various techniques for dating archaeological sites or the objects found on those sites.

Based on a discipline of geology called stratigraphy, rock layers are used to decipher the sequence of historical geological events.

Relative techniques can determine the sequence of events but not the precise date of an event, making these methods unreliable.

SAN FRANCISCO, March 23, 2010 — Scientists today described development of a new method to determine the age of ancient mummies, old artwork, and other relics without causing damage to these treasures of global cultural heritage.

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