Pieces of broken rock are also known as DEBRIS. DEBRIS is a term used to describe the fragments of rocks, minerals, and other materials that have been broken down by natural forces such as wind, water, and ice. These pieces of broken rock can range in size from small particles to large boulders. DEBRIS can be found in many different environments, including deserts, beaches, and mountains. It is an important part of the Earth's natural cycle, providing nutrients for plants and animals.