Limestone Rock Cycle By Leah and Evan Limestone

Limestone Rock Cycle By Leah and Evan

Limestone General Information ● ● ● Limestone is a Sedimentary rock because It formed from organic material like coral, shells and marine debris layering and building up. Meaning it is found were there once was or still are shallow waters. 50% of Limestone weight is made up of calcium carbonate (Ca. CO� ) and the rest varies from the origins and location of where the rock was found. Limestone has a rough surface because it is often made up of many different rocks as well as fossils and mineral fragments. This also gives it a lower density than other rocks. Some Limestone has luster, but simply from small particles of quartz and other light reflecting minerals. Most limestone has a fairly pale streak

A geologist can tell the origin of Limestone from the presence of fossils in it.

Formation process This rock is formed in the crust of the Earth, often in oceans or caves. There are many different types of Limestone that are formed in different ways. In caves, Limestone is created in the form of stalactites and stalagmites. This kind of Limestone is created when water that contains calcium carbonate drips from the ceiling of the cave and evaporates, leaving behind miniscule amounts of calcium carbonate that build up into large rock spikes. Limestone can also form in oceans, when larger bits of other rocks and minerals build up and compress into a single solid object. ● ● ● At the sedimentary stage of the Limestone rock cycle, the rock deposits can be found in shallow waters or caves. At the Metamorphic stage, the Limestone has converted into marble, and can be found near convergent plate boundaries Since the chemical composition of rocks changes when they melt, it is difficult to find the source of igneous rocks. However, it is still likely that Limestone ends up becoming an igneous rock like Basalt, Diorite, or Granite. These can also be found by convergent plate boundaries. Convection currents impact the Limestone rock cycle when it is in its molten stage and each of the different rock structures are fusing together to form different igneous rocks.

Limestone is a sedimentary rock formed from organic materials. Any kind of limestone, in pure or pure can become marble. Heat+pressure makes limestone metamorphosed into Marble. These sediments are compressed+cement when mixed with clay. Often done under water. The sediments are mostly calcite and any other in pure element that can be found in marble. Marble is a metamorphic rock. It is mainly made of calcite and dolomite. It is made of crystallized limestone, giving it a completely different chemical composition. Marble is heated+cooled creating an igneous rock. Weathering+erosion creates sediments that float around. So far there is no specific igneous form of rock after marble, although calcite is the main element found in all these stages

Weathering Over time either wind or ocean currents break off small bits of rock to create sediment. This sediment could either build up again and create more Limestone or slowly sink into the Earth and melt to form other types of rocks.

The Stability of Limestone is known to be a stable ingredient in concrete so we could use it to build a stable base for the bunker. Limestone bricks are fairly stable and can last a long time. It is generally safe to build on and around. The main thing that could be a but suspicious about creating an underground bunker out of Limestone is its weight. Limestone is also acid resistant, and can be used to protect from acid rain.

Density and Hardness Different types of Limestone have different densities because of how they are formed and what stage of the rock cycle they are at. For example, Marble is created from Limestone that has been exposed to a lot of heat and pressure (having gone through the Metamorphic stage). The average density of Limestone is between 2. 3 and 2. 7, and is at level 3 on the Mohs scale. Density and Hardness are both vital in being sure that the rock will not collapse. Since Limestone has a fairly low Hardness, it will be important to stabilize the structure to ensure the safety of the people inside.

Cool things about Limestone Portland cement is made with part Limestone. It has been found in the Indian ocean, the Caribbean Sea, Persian Gulf, Gulf of Mexico and near Pacific Ocean islands. Limestone has been used as a building material for many of the old buildings in France. Chalk is a type of Limestone that is created from the skeletal or shell remains of microscopic marine creatures The pyramids of Giza are made of limestone cement Stalactites and stalagmites are created by Limestone forming through evaporation in caves

Sources: https: //geology. com/rocks/limestone. shtml http: //www. docbrown. info/page 01/Ex. Ind. Chem/Ex. Ind. C hem. htm http: //www. bbc. co. uk/bitesize/ks 3/science/environme nt_earth_universe/rock_cycle/revision/5/