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Intrusive igneous rocks form in magma chambers that are deep underground.
Click on image for full size
Courtesy of Boise National Forest

Igneous Rocks Inside the Earth!

These types of igneous rocks are made deep underground. In fact, it is possible that below your feet, deep within the Earth there are igneous rocks being made right now! There, hot magma cools very slowly. Slow cooling makes rocks with large mineral crystals.

Take a look at an igenous rock that formed deep underground! It is called granite.

Find out more about intrusive igneous rocks by visiting our intermediate level page!


Last modified June 17, 2003 by Lisa Gardiner.

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TES XXVI, 3 fall 2010 The Fall 2010 issue of The Earth Scientist, focuses on rocks and minerals, including articles on minerals and mining, the use of minerals in society, and rare earth minerals, and includes 3 posters!

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