What is uranium dating used for web dating pen pal site

When an organism, eg a tree, dies it stops taking in carbon dioxide.

The amount of carbon-14 in the wood decreases with time as it decays into nitrogen with a half-life of about 5700 years.

what is uranium dating used for-14

The 235U–207Pb cascade has a half-life of 704 million years and the 238U–206Pb cascade is considerably slower, with a half-life of 4.47 billion years.

So when a mineral grain forms (specifically, when it first cools below its trapping temperature), it effectively sets the uranium-lead "clock" to zero.

The age of a rock can be calculated if its ratio of uranium to lead is known.

This is unstable and eventually decays to lead, which is stable.

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

Last modified 05-Aug-2017 05:51