Limestone

Definition

Limestone is a sedimentary rock composed mainly of calcium carbonate. It forms from the accumulation of shells, coral, and other organic materials over millions of years.

Related terms

Fossilization: The process by which organic remains, such as shells or bones, are preserved in rocks like limestone.

Karst landscape: A type of terrain formed by the dissolution of soluble rocks like limestone, resulting in features like sinkholes and caves.

Marble: A metamorphic rock that forms when limestone undergoes intense heat and pressure. It is often used for sculptures and buildings due to its smooth texture.