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Uranium lead dating process dating in your late forties

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In uranium–lead dating, minerals virtually free of initial lead can be isolated and corrections made for the trivial amounts present.

The reason for stopping at lead is because lead is not radioactive and will not change into a different element.

The plot of the ratios will then produce a straight line below the Concordia curve.

Uranium-Lead dating is a radiometric dating method that uses the decay chain of uranium and lead to find the age of a rock.

– A new study by geologists at the Berkeley Geochronology Center and the University of California, Berkeley, improves upon a widely used dating technique, opening the possibility of a vastly more accurate time scale for major geologic events in Earth's history.

In a paper published this week in Science, geochemist Roland Mundil of the Berkeley Geochronology Center (BGC) and his colleagues at BGC and UC Berkeley report that uranium/lead (U/Pb) dating can be extremely accurate - to within 250,000 years - but only if the zircons from volcanic ash used in the analysis are specially treated.