Intra - plate earthquakes and volcanoes

Question 1

What are intra - plate earthquakes and volcanoes?

Answer 1

Earthquakes and volcanoes that occur away from the plate boundaries

Question 2

Intra plate earthquakes

Answer 2

• Can occur anywhere
• Tectonic stress causes old fault lines to reactivate
• The plates move over a spherical surface causing zones of weakness

Question 3

Hot spot volcanoes

Answer 3

• Occur over columns of rising magma in the asthenosphere (stationary magma plumes)
• Tectonic plates move over the plume leading to formation of volcanic islands
• The oldest island is the one furthest away from the plume