Tectonic Hazards (volcano Case Studies) (Plate Tectonics Booklet 2)

Question 1

What is the name and type of plate boundaries that caused the eruption of Mount Nyiragongo?

Answer 1

Caused due to divergent plate boundary (African plate)

Question 2

What is the magnitude of Mount Nyiragongo?

Answer 2

VEI 1

Question 3

Describe the areal extent of Mount Nyiragongo

Answer 3

Fairly dispersed , 3 lava flows one of which travelled 18KM towards the city of Goma

Question 4

What was the death toll of mount nyiragongo

Answer 4

137 dead

Question 5

What was the infrastructure damage due to the eruption of Mount Nyiragongo?

Answer 5

15% of city of Goma destroyed (14 villages), 130,000 people left homeless.

Question 6

What was the economic impact of Mount Nyiragongo?

Answer 6

70% of economic output affected

Question 7

When did Mount Nyiragongo erupt?

Answer 7

January 17th 2002

Question 8

When did Mount St Helens erupt?

Answer 8

May 18th 1980

Question 9

What is the name and type of plate boundaries that caused the eruption of Mount St Helens?

Answer 9

Subduction of Juan De Fucan plate beneath the NA plate.

Question 10

What was the magnitude Mount St Helens?

Answer 10

VEI 5

Question 11

Describe the areal extent of Mount St Helens

Answer 11

Very dispersed, debris was found as far as 27KM and ash was fired at heights 26KM high that produced ash falls as far as east Montana.
Complete darkness immersed in areas like Washington (400KM away)

Question 12

What was the death toll of Mount St Helens?

Answer 12

57