About igneous, sedimentary and metamorphic rocks
Sunday January 18, 2004
Here's a new three-part article on one of the most basic things in geology: the three great classes of rocks. Igneous rocks come from hot melt. Sedimentary rocks come from cold sediments. And metamorphic rocks come from the other two rock types when Earth gets its hands on them. The rock cycle starts with igneous rocks, and so do we. Read more...


Comments
No comments yet. Leave a Comment