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intrusive igneous rock

Primary Information
Secondary Information

Definition

Intrusive igneous rocks are rocks that form when magma cools and solidifies below the surface of the Earth.

Magma is hot, molten rock that is found deep inside the Earth. When magma cools slowly, it forms large crystals. This is why intrusive igneous rocks have large crystals.

Intrusive igneous rocks are found in mountains, valleys, and other places where magma has cooled and solidified.

How can the word be used?

The intrusive igneous rock that makes up the Hawaiian Islands was formed when magma cooled and solidified beneath the Earth's surface.

intrusive igneous rock

Different forms of the word

There are no different forms of the word "intrusive igneous rock". It is a compound noun that refers to a type of igneous rock that forms when magma cools and solidifies within the crust of the Earth.

Etymology

The word "intrusive" comes from the Latin word "intrusīvus", which means "thrusting in". This is a reference to the way that intrusive igneous rocks are formed, when magma forces its way into cracks and spaces in the Earth's crust.

The word "igneous" comes from the Latin word "ignis", which means "fire". This is a reference to the fact that intrusive igneous rocks are formed from magma, which is molten rock that has risen from the Earth's mantle.

So, the term "intrusive igneous rock" literally means "rock that is thrust in by fire". This is a very accurate description of how these rocks are formed.

Question

What is intrusive igneous rock?