Geography- Rocks, resources and scenery

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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
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Example of Metamorphic rock
Slate
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Card 2

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When did carboniferous limestone form in the UK?

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Carboniferous period- 340 million years ago

Card 3

Front

When did chalk form in the UK?

Back

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Card 4

Front

When did granite form in the UK?

Back

Preview of the front of card 4

Card 5

Front

How are igneous rocks formed?

Back

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