Intrusive

Question 1

What is a dormant volcano? (Intrusive tectonics)

Answer 1

If it has not erupted for years but sometimes seeps gas

Question 2

What is an extinct volcano? (Intrusive tectonics)

Answer 2

If it has not erupted for thousands of years and has been weathered

Question 3

What is an intrusive feature? (Intrusive tectonics)

Answer 3

Magma cools and solidifies into igneous rock below the earths surface

Question 4

What kind of crystals does slow cooking produce? (Intrusive tectonics)

Answer 4

Larger crystals e.g granite

Question 5

What is a Dyke? (Intrusive tectonics)

Answer 5

• Solidified magma often forms into groups called swarms
• highly resistant
• thin, tall

Question 6

What is an example of a dyke? (Intrusive tectonics)

Answer 6

Isle of mull

Question 7

What is a Sill? (Intrusive tectonics)

Answer 7

• magma solidifies in strata (layers)

* when exposed to erosion they form steep sided cliffs

Question 8

What is an example of a sill? (Intrusive tectonics)

Answer 8

Great whin sill

Question 9

What is a Laccolith? (Intrusive tectonics)

Answer 9

• formed when viscous magma forces the underlying rock to strata
• looks like a dome

Question 10

What is an example of a Laccolith? (Intrusive tectonics)

Answer 10

Eildon Hills

Question 11

What is a Batholith? (Intrusive tectonics)

Answer 11

• Most other features feed off this before it solidifies

* exposed to extreme heat which alters adjacent rock

Question 12

What is an example of a batholith? (Intrusive tectonics)

Answer 12

Dartmoor

Question 13

What is an active volcano?(intrusive tectonics)

Answer 13

If it has erupted recently and is likely to do so again