The Rock Cycle shows relationships between geologic materials (rocks, sediment, magma, etc.) and processes (volcanism, weathering, melting, etc.). Materials are shown boxes with black backgrounds; processes in boxes with pink backgrounds. The arrows indicate the ways in which one material may be changed by a process into another material. For example, a metamorphic rock (a material) may be transformed into magma (another material) by melting (a process). Click on the boxes to learn about the materials and processes.
Side Graphic
David J. Leveson