2. Volcanic Mountains
• Volcanic Mountains are mountains
made of igneous matter (ash, magma
and rock) spilt out of a volcano.
• Over 70% of all volcanic eruptions
occur in the worlds oceans.
• Volcanoes are formed when magma
deep in the earth erupts through the
earths surface as lava and eventually
piles up on hardened lava from
previous eruptions to create a cone
shaped mountain.
• Different Volcanoes
>Mt Helens
>Kilauea
3. Dome Mountains
• Dome mountains are
formed when magma
beneath the crust pushes
up on the plate to try and
form a volcano but the
plate is to thick so it can’t
penetrate and it creates a
dome mountain instead
• Eventually the Magma rises
to high and hardens thus
creating a stable mountain
and a new layer of rock.
• Dome mountains start as
low lying sedimentary rock
and as we have explained
before the mountain is
then created by magma.
•Dome mountains are often
formed in New Zealand + an
example of a Dome
mountain is…
>Mt Kea
4. Fold mountains
• Fold mountains are formed when two
tectonic plates collide and their edges
crumple to form mountains.
• There are two ways Fold mountains can
be created, one way is that one plate
goes above the other. The other way is
that both plates collide head on and
both of them rise.
• Fold mountains include
>the Himalayas
>the Andes
> The Rockies
