The cliffs of the Scala dei Turchi get their unique white color from a type of sedimentary rock called marl. Marl is a relatively soft clay-like rock, and the Scala dei Turchi's location along the ...

The gigantic Yellowstone Grand Canyon, lined with volcanic rock. With all the effects of hydrothermal activity, river erosion and glacier activity this amazing formation was created ( Kiley Williams) ...

The basalt which makes up the Giant’s causeway is an igneous rock. Sedimentary rocks are formed by small rock pieces which are transported by rivers and laid down in layers. Chalk is a ...