Tiny pieces of 'deep time' brought to the surface

Three-billion-year-old zircon microcrystals found in northern Ontario are proving to be a new record of the processes that form continents and their natural resources, including gold and diamonds.

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<p><a href="http://www.physorg.com/news123768995.html">Tiny pieces of 'deep time' brought to the surface</a></p> <p>Three-billion-year-old zircon microcrystals found in northern Ontario are proving to be a new record of the processes that form continents and their natural resources, including gold and diamonds.</p>