Volcanic Rocks
What is a volcanic rock?

The sub-family of rocks which form from volcanic lava are called igneous volcanic rocks (to differentiate them from igneous rocks which form from magma, below the surface of the earth, called igneous plutonic rocks).

What types of volcanic rocks are there?

One of the three main rock types are igneous, sedimentary and metamorphic.

What defines a volcanic rock?

Volcanic rock is an igneous rock of volcanic origin.

What is the difference between an igneous rock, sedimentary rocks and metamorphic rock?

Sedimentary rocks are laid down in layers of sediments such as mud, silt and sand that accumulate and harden over time. Igneous rocks are formed from the solidification of lava or magma. Metamorphic rocks are a bit of a combination.

How are volcanic rocks classified?

Volcanic rocks are classified according to volcanic minerals present.

By Harry

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