Different types of volcanoes

Question 1

What are the features of a dome volcano? 3

Answer 1

Often occur at destructive margins, e.g. Puy de Dome
Lava is rhyolitic or andesitic
Steep sides caused by high viscosity lava which flows for short distances

Question 2

What are the features of a caldera? 4

Answer 2

Often occur at destructive margins, e.g. Aira Caldera in Japan
Lava is andesitic or rhyolitic.
Central part of volcano had collapsed s magma chamber below has emptied
Very wide circular crater which can be several km across

Question 3

What are features of a shield volcano? 3

Answer 3

Often occur at constructive margins or hotspots, e.g. Mauna Loa in Hawaii
Lava is basaltic
Gently sloping sides caused by low viscosity lava which flows for long distances

Question 4

What are features of a fissure volcano? 3

Answer 4

Often occur at constructive margins, e.g. Laki Fissure System in Iceland
Lava is basaltic
Long, linear vent which can be a few metres wide but several km long
fairly flat surface caused by low viscosity lava which flows for long distances