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Category:	All Categories>topics>Earth characteristics>rocks and deposits>igneous rocks
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Here are some USGS Web pages with more information on igneous rocks and Anywhere:

Naming igneous rocks (Score: 1.000)

Photo glossary of volcano terms Illustrates and describes commonly used volcano-related terms. (Score: 1.000)

Rocks 101 (Score: 1.000)

Rocks and Images (Score: 1.000)

Yosemite Valley geologic story Site describes the present understanding of the various geologic processes that contributed to the valleys creation. Links to Yosemite Valleys geologic maps. (Score: 0.322)

Devils Postpile National Park geologic story Site has links to Devils Postpiles geologic history, rocks and minerals, geologic time, geologic maps. (Score: 0.208)

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About igneous rocks:

Definition: Rocks that solidified from molten or partly molten material, i.e. from a magma. [Glossary of Geology, 4th ed.]