Rock layers and relative dating

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

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

The Earth is an active planet. Earthquakes shake and volcanoes erupt. Sections of the crust are on the move. Mountains...

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