This KS3 Geography quiz looks at British limestone. Discover how different limestone types formed, and why Carboniferous limestone creates some of our steepest cliffs, pavements and gorges.
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It's approximately 15-16 million years old
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Most sedimentary rocks have bedding planes
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Limestone dissolves in rainwater because rainwater is naturally slightly acidic
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The largest of these can be millions of years old - they grow at a very slow rate
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The rock has many uses e.g. building, in steelworks, making toothpaste
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The Peak District is mainly in Derbyshire but extends into neighbouring counties
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They will only appear when there has been a lot of rain. Some are seasonal and disappear in the summer, like the river Manifold on the border of Derbyshire and Staffordshire
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Because the rock is full of cracks like some brick walls
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The gaps between them are called grykes
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This can happen when a cave or cavern has formed close to the surface
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