Minor Volcanic Forms

Question 1

Solfatara

Answer 1

Small volcanic areas without cones, produced by gases (mainly sulphurous) escaping to the surface e.g. Bay of Naples in Italy

Question 2

Geysers

Answer 2

Occur when water heated by volcanic activity, explodes onto the surface e.g. Old Faithful, Yellowstone National Park, USA

Question 3

Hot springs/boiling mud

Answer 3

Sometimes the water does not explode into the surface. If this mixes with surface deposits, boiling mud is formed e.g. Very common in Iceland.

Question 4

Intrusive and extrusive volcanic activity in the U.K.

Answer 4

• granites and intruded rocks occur
• dykes and sills are common
• basaltic flows
• a volcanic plug from a long extinct volcano forms the site of Edinburgh