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"Fundamental Assumption" in Zircon Dating Called into Question

A commonly-used dating method has been threatened by new findings that undermine assumptions.

How Rocks Can Look Older Than They Are

Researchers find that the most common dating method can produce "spuriously old" dates.

The Trouble with Zircons

Geologists' favorite tool for dating rocks at millions and billions of years old has revealed problems with interpretation.

Uranium-Lead Dating Fraught With Discordance

Behind the confidence of uranium-lead dates hides worry about numbers that don't match up.
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