Mt Nyrigongo Flashcards

1
Q

What type of volcano is it ?

A

Active stratovolcano located in African Rift Valley.

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2
Q

What PB is it associated with?

A

Constructive.
2 continental plates pull apart.
Nubian - west.
Somali - east.

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3
Q

Describe how Rift Valley forms?

A

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

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4
Q

What type of magma?

A
Basaltic
Low viscous 
Low silica 
Not explosive 
Runny
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5
Q

What did it record on VEI

A

1

Not explosive

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6
Q

What happens as the plates separate?

A

Magma continuously moves from mantle

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7
Q

Crater?

A

250 m deep

2 km wide

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8
Q

Largest lava lake

A

Xxxxxx

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9
Q

How fast does lava flow ?

A

90 km hr

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10
Q

How many eruptions ?

A

Since 1882 , 34

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11
Q

Gas emissions ?

A

Co2

From fissure.

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12
Q

What also accompanied volcano?

A

Earthquakes 5 on R scale

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13
Q

How much did lava flows destroy ?

A

1/3 goma

Runway

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14
Q

How many deaths

A

147
Gases
Contaminated water

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