This 23-page slideshow explains what intrusive and extrusive igneous rocks are and the characteristics of their structures. Each type of structure is accompanied by one or more images. (Website for Mining Engineering students at Mehran...

If you're interested in learning about the igneous rock-forming minerals in seeing multiple pictures of each sample, then this is your site. It also includes the chain that these minerals follow. Click on the PDF link for a printable...

This lesson will present how to identify and classify igneous rocks. It is 3 of 3 in the series titled "Geology: Igneous Rocks."

igneous rock

igneous rock

A close up photo of a unique looking igneous rock set against a white background.

A colorful diagram of the rock cycle showing the stages that rocks go through as they are transformed by different processes such as weathering, lithification, and crystallization.

A simplified version of the rock cycle showing the three types of rocks and the transformational processes that occur between each pair of rock types.

A sketch map of eastern Canada showing the general location of different types of rocks in this part of Canada. Within the heavy black lines are found chiefly metamorphic and igneous rocks, and chiefly sedimentary rocks without. The...

A map from 1911 of the southern Rockies showing the main topographic features of the region, including; the eastern foothills (hogback topography); the Colorado or Front Range and Wet Mountains; the Park, Sawatch (or Saguache), and...