geologic formation

A geologic formation is a specific layer of rocks and sediments that have been built up over time in a particular area. These layers often have distinct characteristics, like composition, color, or fossil content, which help geologists identify and differentiate them. Formations are the result of natural processes such as volcanic activity, sediment deposition, or erosion. They record Earth's history, revealing clues about past environments and geological events. Studying formations allows scientists to understand how the Earth's surface has changed over millions of years and to locate natural resources like minerals and water.