Volcanoes

1
Volcanoes

• Not just one type

2
Composite Cone
Mt St Helens - USA
The volcano is built up of alternate layers of
LAVA and ASH. They can explode with great
violence.
Crater
Pyroclastic Flow
Ash layer
Dyke
Lava Layer
Flank eruption
Conelet
Lava Flow
Crust
3
Shield ( Basic) Cone
Mauna Loa Hawaii -USA
Shield Volcanoes are enormous features built up
only from layers of lava. They produce lots of
lava but they tent not to erupt violently.
Layers of Lava
Lava Flow
10,000m
250 miles
Composite volcano to scale
4
Ash and Cinder Cone
Paracutin - Mexico
The volcano is built up of layers of ASH. When
it erupts it is normally with great explosive
force.
Volcanic Bombs
Layers of Ash and Cinder
3,000m
Pipe