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Intrusive rocks

If the magma never bubbles to the surface but instead cools in place as a large block, it is an intrusive rock. There are three types of intrusive rock: gabbro, granite and diorite. The difference is between their PH level.

If the magma is erupted to the surface as lava, the resulting rock is called extrusive.

This table shows the different kinds of igneous rocks.

Go to a listing of Rocks by mineral group

Intrusive rocks

If the magma never bubbles to the surface but instead cools in place as a large block, it forms an extrusive rock. Gabbro, granite and diorite are three types of extrusive rock. The differences are in their PH levels.

If the magma is erupted to the surface as lava, the resulting rock is called extrusive.

This table shows the different kinds of igneous rocks.

Go to a listing of Rocks by mineral group

Intrusive rocks

If the magma never reaches the surface, it cools and formes intrusive rocks.

If the magma is erupted to the surface as lava, the resulting rock is called extrusive.

This table shows the different kinds of igneous rocks.

Go to a listing of Rocks by mineral group