From English farmland to Egyptian tombs, Limestone is a distinctive rock with many uses. Learn about the formation of different limestone types and the landscapes these form.
- There are three main types of limestone: Carboniferous, Jurassic and Cretaceous.
- Carboniferous limestone is over 300 million years old, it is tough and the least porous type, it occurs in thick layers and often features in cave systems.
- Jurassic limestone is 135 to 208 million years old, is softer and more porous than carboniferous and is often used for building material.
- Cretaceous limestone, or chalk, is 66 to 144 million years old, is soft, porous and pure and forms the iconic White Cliffs of Dover.
From man-made marvels to natural wonders – limestone forms some of the world's most spectacular geological sights.
Limestone is a sedimentary rock, laid down in distinctive layers.
Formed by the compression of sediment
It is formed underwater.
Plant and animal remains, deposited on sea beds millions of years ago, are compacted together over ...
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