Читать книгу Geology For Dummies - Alecia M. Spooner - Страница 17

The sequence of events that change a rock from one kind into another are organized into the rock cycle. It is a cycle because there is no real beginning or end. All the different types of rocks and the various earth processes that occur are included in the rock cycle. This cycle explains how materials are moved around and recycled into different forms on the earth’s surface (and just below it). When you have a firm grasp on the rock cycle, you understand that every rock on Earth’s surface is just in a different phase of transformation, and the same materials may one day be a very different rock!