Limestone

Limestone is a sedimentary rock primarily composed of calcium carbonate. It forms from the accumulation of shells, coral, and other organic materials over millions of years, often in marine environments. Limestone is commonly used in construction, paving, and as a key ingredient in cement. It can also be found in various forms, including chalk and marble, the latter being a metamorphosed version. Additionally, limestone plays a crucial role in natural processes, such as water filtration and carbon cycling, and is important in agriculture for soil pH adjustment. Its versatility makes it an essential resource in various industries.