Limestone is a sedimentary rock that is made up mostly of calcium carbonate which is represented by the chemical formula CaCO3. Approximately ten percent of all sedimentary rock is limestone. It is formed both by biochemical processes and inorganically. Limestone has several advantages since it is a naturally occurring mineral that dissolves easily in water. It is available in abundance and is relatively cheap. It is also non-toxic and adding it to water or soil has several effects and numerous benefits.
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- Due to the many ways that limestone can be produced, there are several types of limestone. One form of limestone is chalk, which is created from the skeletons of tiny marine creatures. Chalk is a porous rock best represented by the well-known cliffs of Dover. Another example of biochemically produced limestone are coral reefs which are created from the skeletal remains of invertebrates. Because it easily erodes, most cave systems are found in limestone. The stalactites and stalagmites in caves are essentially made up of inorganic limestone.
Types of Limestone
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