Metamorphic rocks form deep below Earth’s surface. Over thousands of years, they make their way to the surface. Then they are collected for use as building ma

Metamorphic rocks are one of the three classes of rocks. Seen on a global scale they constitute the dominant material of the Earth. The understanding of the pet

In this book, readers will learn how intense heat and pressure changes rock so completely it becomes metamorphic rock. Vibrant, full-color photos and carefully