Dating rocks



Radioactive dating

We use cookies to ensure that we give you the best experience on our website. We also use cookies to ensure we show you advertising that is relevant to you. If you continue without changing your settings, we'll assume that you are happy to receive all cookies on the BBC website. However, if you would like to, you can change radioactive dating rocks cookie settings at any time.

British Broadcasting Corporation Home. Rocks often contain traces of uranium. This is unstable and eventually decays to lead, which is stable. The age of a rock can be calculated if its ratio of uranium to lead is known. The half-life of uranium is 4. If a rock has a uranium to lead ratio of 1: This would make it 4. Back to Radiation for life index. Fun dating website usernames using the Internet Explorer 6 browser to view the BBC website.

Our site will work much better if you change to a more modern browser. It's free, quick and easy. Find out more about upgrading your browser hereā€¦. This radioactive dating rocks is best viewed in an up-to-date web browser with style sheets CSS enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience.

Please consider upgrading your browser software or enabling style sheets CSS if you are able to do so. Cookies on the BBC website We use cookies to ensure that we give you the best experience on our website. Continue Find out more. British Broadcasting Corporation Home Accessibility links Skip to content Skip to local navigation Skip to bbc.

This page has been archived and is no radioactive dating rocks updated. Find out more about page archiving. BBC Radio 1 BBC 1Xtra. Print Science Uses of radioisotopes. Dating rocks Radioactivity can be used to date rocks. The older the rock, the lower its uranium to lead ratio: Young rocks have a high uranium to lead ratio Very old rocks have a low uranium to lead ratio The table shows how this works.

Time Percent of uranium Percent of lead Uranium: Activity Revision Map Give your revision some visual style with a Bitesize revision map! Links BBC Science and Nature The natural world and beyond! On the web The Science Museum BrainPOP Science GCSE. Revision Guide Revision Centre Revision Radioactive dating rocks. BBC iD BBC radioactive dating rocks. CBBC CBeebies Comedy Food History Learning Music Science Nature Local Northern Ireland Scotland Wales Full A-Z of BBC sites.

BBC links Mobile site Terms of Use About the BBC Privacy Accessibility Help Cookies Contact the BBC Parental Guidance.


1.6 Absolute Dating of Rocks