Limestone is a sedimentary rock primarily made up of calcium carbonate. Because seawater is one of the most common sources of limestone, its many variations can be located throughout the world. These varieties of limestone serve a number of commercial, agricultural, and ecological purposes. read more
Limestone types may be formed either inorganically or biochemically and include coral reefs, chalks, coquina and oolitic limestone. Limestone is composed of calcite and makes up approximately 10 percent of all sedimentary rocks. read more
This is a list of types of limestone arranged according to location. It includes both formal stratigraphic unit names and less formal designations. read more