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Crystal is 'oldest scrap of Earth crust


Gaius

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:old: This is exciting stuff -

BBC News, 24 February 2014

Crystal is 'oldest scrap of Earth crust'

A tiny 4.4-billion-year-old crystal has been confirmed as the oldest fragment of Earth's crust. The zircon was found in sandstone in the Jack Hills region of Western Australia. Scientists dated the crystal by studying its uranium and lead atoms. The former decays into the latter very slowly over time and can be used like a clock. The finding has been reported in the journal Nature Geoscience.

Full story - http://www.bbc.co.uk/news/science-environment-26324968

Cheers Beers & Gold

Chuck

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