Central Texas Rock Quarry Information:

Limestone is a form of sedimentary rock. To understand the different types of limestone, it is first necessary to understand how sedimentary rock is formed.



Sedimentary rocks cover two-thirds of the earth’s surface. These are formed in two ways: either by continual exposure to wind and water; or the compacted, fossilized remains of marine organisms.

Limestone is actually formed by the deposit and breakdown of the fossilized remains of marine organisms such as shells, marine skeletons and other organic material.

Today’s limestone is quarried from the bottoms of what werewater bodies, which is why it is found throughout the world.


Limestone is classified by the conditions under which it was formed

Breccia – formed when small pieces of pre-existing limestone are cemented together.

Dolomite – formed by calcium magnesium carbonate deposits.

Fossilized – formed by the cementation of various shells and fossils.

Lithographic – formed by the deposits of very fine grains of microscopic plant and animal fossils.

Travertine – formed by the evaporation of water in rivers and caves. As the evaporation process occurs the travertine is exposed and, because of the flow of water through the limestone, large holes are formed.

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