Geography- Rocks, resources and scenery

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Created by: LivWingate
Created on: 09-02-15 18:27

When did clay form in the UK?

Jurassic period

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When did carboniferous limestone form in the UK?

Carboniferous period- 340 million years ago

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When did chalk form in the UK?

Cretaceous period

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When did granite form in the UK?

Ordovician period- 280 million years ago

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How are igneous rocks formed?

From MAGMA that's COOLED DOWN

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How are metamorphic rocks formed?

By HEAT and PRESSURE

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How are sedimentary rocks formed?

From COMPACTED SEDIMENT

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Name an intrusive igneous rock

Granite

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Name and extrusive igneous rock

Basalt

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How do intrusive rocks form?

* Magma cools down below earth's surface. *Magma cools down very slowly forming large crystals. *Large domes of cooled magma form domes called Batholiths. *Where the magma has flowed into the gaps in the surrounding rock it forms dykes and sills.

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How do extrusive rocks from?

*When magma cools down after its erupted from the volcano onto the Earth's surface. *The magma cools down very quickly, forming small crystals that give the rock a fine texture

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Where are igneous rocks found in the UK?

Formed in upland areas eg. Dartmoor and areas of Scotland and Wales

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Where are sedimentary rocks found?

White cliffs of dover

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Where are metamorphic rocks found?

North of Scotland and wales

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Example of Sedimentary rock

Limestone or Chalk