The continuous cycle of rocks within the interior of the earth and on the earth’s surface is known as the rock cycle. Geologists have recognized three different types of rocks that constantly change from one form to another through a number of different processes. One such rock is the igneous rock, which is created from the cooling and solidification of molten material brought to or near the earth’s surface. Sedimentary rocks are an aggregate of pre-existing rocks or sediment, or of once living organisms compacted together. Lastly, metamorphic rocks are the result of increased temperature and pressure conditions within the earth’s surface. Together these processes make up the framework for the rock cycle that geologist use to explain the interconnecting relationship from one process to another.
As the bedding of sedimentary rock becomes more and more layered, the increased pressure and temperature causes the rock to undergo metamorphism. The transformation into metamorphic rock involves the changes in texture, mineral content, and composition. The amount of metamorphism depends on the temperature and pressure, but as they increase the metamorphic rock will undergo different transformations, or grades. If the melting continues it will become magma and if cooled it will give rise to another igneous rock.
After these rocks solidify, those that are exposed at the Earth’s surface are vulnerable to a variety of risks, including weathering. When these rocks become exposed, they are subjected to several transport mechanisms such as wind, ice, water, or gravity. As they break down to form sediment, they become de
Example Essays Home
