Limestone: Features

Easily eroded by water, limestone's composition means it makes up spectacular sights all over the world. Learn about some of the surface and underground features of this rock type.

Earth Science - Geology - Learning Points.

Limestone is a sedimentary rock formed underwater over millions of years.

Limestone is permeable, soluble and reactive with acid, and is worn away over time by rainwater to form distinctive features.

The erosion of limestone at the Earth's surface creates karst landscapes, sinkholes, narrow valleys and steep-sided gorges.

Limestone caves are formed below the surface and rainwater drains through the rock to form stalactites (drips from the ceiling) and stalagmites (from the landing drips).

A Twig Context Film.
Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.