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Earth's System: Earth’s Materials
Igneous Rock Classification - II
Description
Igneous Rock Classification - II
The type of igneous rock that forms depends on more than just where the magma cools. It also depends on what the magma is made of, especially how much silica it contains. Magma with a lot of silica makes rocks that are usually lighter in color and less dense. The...
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Transcript
The color, texture, and minerals in igneous rocks don’t just depend on whether they formed at the surface or deep underground. They also depend on what the magma is made of, especially how much silica it contains.
Magma with a high amount of silica forms rocks that are usually light in color and less dense.
For example, felsic magma,...
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