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Home→Categories Earliest rocks

Category Archives: Earliest rocks

Clocks measuring Earth’s formation off by millions of years

Posted on April 11, 2012 by WykenSeagraveApril 11, 2012
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The oldest rocks on Earth could have formed as early as 120 million years after the solar system was formed rather than approximately 200 million years after, as was previously thought, following a new measurement of the half-life of Samarium-146. … Continue reading →

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Oldest Rocks

Posted on April 1, 2012 by WykenSeagraveApril 1, 2012
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The oldest terranes, with ages ranging from 3.8 Ga to 4.0 Ga, have been identified in Canada, while Australian zircon crystals dated at 4.4 Ga represent the oldest dated minerals on Earth. The exceptional resistance of zircon grains to repeated … Continue reading →

Posted in Earliest rocks, Geology | Leave a reply
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