Igneous Rock Uses

In nature, there are three main kinds of rocks, namely, the igneous rocks, sedimentary rocks and metamorphic rocks. They are classified based on the rock formation processes. Directly or indirectly, all types of rocks are derived from the igneous type. For instance, igneous rocks after being subjected to extremely high pressure result in metamorphic rocks. As per geological data, more than 90 % of the upper portion of earth's crust comprises of  Here, we will focus on the basics of igneous rocks and igneous rock uses.