Is Marble Regional Or Contact Metamorphism

Contact metamorphism is the name given to the changes that take place when magma is injected in the surrounding solid rock country rock.

Is marble regional or contact metamorphism.

Burial metamorphism differs from regional and contact metamorphism in that it is the result of rocks being buried deeper into the earth s crust through tectonic movements. Regional metamorphism is associated with the major events of earth dynamics and the vast majority of metamorphic rocks are so produced they are the rocks involved in the cyclic processes of erosion sedimentation burial metamorphism and mountain building events that are all related to major convective processes in earth s mantle. It s a perfect rock to use because it s soft the white mineral that dominates it is not quartz but calcite it can form either by regional metamorphism or contact metamorphism near igneous intrusions. Regional pressure dominated metamorphism occurs over large areas during periods of mountain building.

During metamorphism this calcite recrystallizes and the texture of the rock changes. Regional metamorphism causes a layered or platy structure in rocks called foliation. C they prevent partial melting so solid rocks can undergo very high temperature regional metamorphism. Changes in rocks caused by tectonic plates pushing together.

The metamorphism of the limestone is required by marble extra iron and graphite in smaller quantities. Contact metamorphism creates marble superior in every way to that of regional metamorphism by the very nature in which it was created. Before metamorphism the calcite in the limestone is often in the form of lithified fossil material and biological debris. At the beginning the metamorphism of the limestone and 1200 1 500 bar and between 125 180 degrees celsius remote exposure to high pressure and temperature of the marble there.

Occurs at low to high temperatures and medium pressure. A they increase the pressures in deeply buried regional metamorphic zones. Any type of magma body can lead to contact metamorphism from a thin dyke to a large stock. Some marble also forms by contact metamorphism when a hot magma body heats adjacent limestone or dolostone.

The type and intensity of the metamorphism and width of the metamorphic aureole will depend on a number of factors including the type of country rock the. It s no wonder marble is so widely used in buildings sculptures and anything else imaginable. Foliated rocks are the result of intense pressure and sometimes to a lesser degree are also the result of heat.