Shop Windows to the Universe

Dig into Montana Before History: 11K Years of Hunter-Gatherers in the Rockies and Plains by D. H. MacDonald, Ph.D. See our online store book collection.
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.

Shop Windows to the Universe Science Store!

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!

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Magma

Pretend that you are an explorer traveling to the center of the Earth. You would find that the deeper you travel, the hotter it gets! Beneath the crust, in the mantle layer, it is hot enough that rock...more

What Is a Mineral?

Minerals are the building blocks of rocks. There are many different types of minerals. All of them are solid and all are made of atoms of elements. Minerals can grow even though they are not alive. Most...more

Granite Rocks

Granite is a common type of igneous rock. Look at it closely and you can see small white, pink, and black crystals. Some granite has tons of pink crystals and some has more white ones. Click on the picture...more

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....more

Song of Nature, by Ralph Waldo Emerson

Mine are the night and morning, The pits of air, the gulf of space, The sportive sun, the gibbous moon, The innumerable days. I hid in the solar glory, I am dumb in the pealing song, I rest on the pitch...more

What’s That Mineral?

Spotting minerals is fun! There are many different types of minerals. Each has a different name and special traits. You can learn more about minerals by looking closely at them to understand their special...more

Quartz

This mineral is called quartz! Sometimes it looks white like milk but usually it looks clear like glass, sometimes with a little pink or gray tinge of color. You can find crystals of quartz in many different...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA