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This age is in good agreement with the age of the meteorites and the age of the Moon as determined independently.Lead-lead dating is a method for dating geological samples, normally based on 'whole-rock' samples of material such as granite.

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Thus the current ratio of lead to uranium in the mineral can be used to determine its age.

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

In whole rock isochron methods that make use of the rubidium–strontium or samarium–neodymium decay schemes (see below), a series of rocks or minerals are...

It can be used to date rocks that formed from about 1 million years to over 4.5 billion years ago with routine precisions in the 0.1–1 percent range.

The dating method is usually performed on the mineral zircon.

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