<meta http-equiv="refresh" content="1; url=/nojavascript/">
Dismiss
Skip Navigation

Igneous Rock Classification

Igneous rocks are grouped based on silica content and whether the rock is extrusive or intrusive.

%
Progress
Practice Igneous Rock Classification
Practice
Progress
%
Practice Now
Types of Igneous Rocks
Igneous rocks are found under and above the earth's surface and are formed by millions of years of solidifying. Learn more about ingenious rocks in this educational geology video.

Reviews

Please wait...
Please wait...

Original text