Limestone-Forming Environments Most of them are found in shallow parts of the ocean between 30 degrees north latitude and 30 degrees south latitude. Limestone is forming in the Caribbean Sea, Indian Ocean, Persian Gulf, Gulf of Mexico, around Pacific Ocean islands, and within the Indonesian archipelago.

Most limestones are marine deposits, but some are formed in lakes, rivers and on land.

The second way limestone is formed is when water containing particles of calcium carbonate evaporate, leaving behind the sediment deposit. The water pressure compacts the sediment, creating limestone. The area around the Great Lakes, such as Michigan, Indiana, and Illinois, has a large amount of limestone.

Limestone is a very common sedimentary rock consisting of calcium carbonate (more than 50%). Fossils are very common in marine calcitic sedimentary rocks. Rocks such as coquina are wholly composed of fossils but so-called normal limestones may be also highly fossiliferous.

Sources of Limestone in the Future It takes about 2 years to build a new cement plant, and the permitting process can take much longer – 8 to 10 years.

Limestone does not float on water. Many pieces have a high enough porosity which makes them float on water until they gradually become soaked. Therefore the correct answer is Option D: Pumice.

It is a colorless crystal or white powder and is obtained when calcium oxide (called lime or quicklime) is mixed, or “” with water. It has many names including hydrated lime, caustic lime, builders’ lime, slack lime, cal, or pickling lime. Calcium hydroxide is used in many applications, including food preparation.

Limestone, commonly known as chuna in Hindi, is a type of sedimentary rock. The use of limestone as a building material is profound. It is also a popular ingredient in the chemical industry for the production of lime.