Oldest at the bottom

Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence. The method of ...

We can blame plate tectonics for many catastrophes over time – earthquakes, volcanoes, geothermal activity, tsunamis and landslides – while ...

Many of us are familiar with some names for parts of Earth’s distant past. There’s the Jurassic, made famous in ...

Most sedimentary rocks are laid down in flat, horizontal layers. These can later tilt and fold due to tectonic activity, ...