A lava flow is an example of an _____ igneous rock (one of the two main igneous rock groups).

Geography

2 answers:

Darya [45]3 years ago

4 0

Answer:

The correct answer is Extrusive igneous rocks.

Explanation:

Extrusive igneous rocks also known as volcanic rocks form when magma reaches the Earth's surface in a volcano and cools rapidly.

This is the partial melting of the rocks inside the mantle and the crust.

They are smooth, fine-grained and crystalline. Its main effect is that magma cools much faster when it is outdoors or underwater, and this way, there is not much time left for crystal growth.

WARRIOR [948]3 years ago

3 0

The answer is extrusive

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