Geological time - for iPad/Mac/PC

A short introduction to this album.

Andrew Bell begins to explain how we can determine the age of rocks by looking closely at their layers.

Andrew Bell gives us a very brief history of Britain through the use of old coins, and explains how fossils are from the carboniferous period.

William Smith is credited as the creator of the first geological map. In this video, Chris Wilson talks us through this milestone in geological history and shows us Smith's map.

Andrew Bell conducts a small experiment that shows us how rocks form their layers. He then explains that there is much more 'time' in the boundary of two rock units, than in the actual rocks themselves.

Siccar Point, in Scotland is a very special place in the field of geology. Andrew Bell visits Siccar Point to explain unconformity in rocks.

The beta counter is a device used to measure radiation levels, and has also been used to determine the age of rocks and other minerals. This video illustrates how this is possible.