Mt Nyrigongo Flashcards
What type of volcano is it ?
Active stratovolcano located in African Rift Valley.
What PB is it associated with?
Constructive.
2 continental plates pull apart.
Nubian - west.
Somali - east.
Describe how Rift Valley forms?
Because plates are similar density and Buoyancy no subduction occurs.
2 plates move apart and brittle crust fractures and areas of crust drop down into parallel faults - Rift Valley .
As the crust thins due to tension magma forces its ways up
What type of magma?
Basaltic Low viscous Low silica Not explosive Runny
What did it record on VEI
1
Not explosive
What happens as the plates separate?
Magma continuously moves from mantle
Crater?
250 m deep
2 km wide
Largest lava lake
Xxxxxx
How fast does lava flow ?
90 km hr
How many eruptions ?
Since 1882 , 34
Gas emissions ?
Co2
From fissure.
What also accompanied volcano?
Earthquakes 5 on R scale
How much did lava flows destroy ?
1/3 goma
Runway
How many deaths
147
Gases
Contaminated water