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News Release 05-188
New Method of Dating Oceanic Crust Is Most Accurate So Far
Discovery hinges on presence of tiny crystals called zircons
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![Tiny crystals called zircons are used to date oceanic crust.](/news/mmg/media/images/zircon_f.jpg)
Tiny crystals called zircons, used to date oceanic crust, are relatively common in rocks known as gabbros.
Credit: Michael John Cheadle, University of Wyoming
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