In the following list of magmas, only one is likely to explode - the others will produce lava flows or spatter to form small cinder cones or ooze out to form lava domes. Which one of the following magmas is most likely to produce an explosive volcanic eruption when it reaches the Earth's surface?

a. A basaltic magma with gas.

b. A basaltic magma without gas.

c. An andesitic magma with gas.

d. A rhyolitic magma without gas.

Question

Geography

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16 October, 08:07

In the following list of magmas, only one is likely to explode - the others will produce lava flows or spatter to form small cinder cones or ooze out to form lava domes. Which one of the following magmas is most likely to produce an explosive volcanic eruption when it reaches the Earth's surface?

a. A basaltic magma with gas.

b. A basaltic magma without gas.

c. An andesitic magma with gas.

d. A rhyolitic magma without gas.

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Answers (1)

Know the Answer?

Beau Hinton · Answer 1

C. An andesitic magma with gas

Explanation:

Andesitic magma are characterised by high gas content allowing them to explode explosively when they reach the surface.