Marble Where Did The Heat And Pressure Come From

Ages ago the skeletons and shells of countless billions of tiny sea creatures.

Marble where did the heat and pressure come from.

That is it began as one kind of rock and later changed into another kind. The resulting rock has a crystalline nature enabling it to take a polish janet writes in remodeling 101. Because marble is a fairly soft material only a three on the mohs hardness scale it is easy to cut and carve. Marble is a metamorphic rock formed when limestone is subjected to high pressure or heat.

In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco 3. The minerals reacted to the pressure differently than the stone did forming veins and patterns. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. Marble is found in the oldest layers of earth s crust.

It s like putting blankets on yourself the more you layers you put on or the more blankets you put on the more pressure you recieve because of all the weight of the layers on top of you. Metamorphism causes variable recrystallization of the original carbonate mineral grains. Marble forms over millions of years when under lots of heat and pressure limestone changes physically and chemically into something harder and denser in a process known as recrystallization. Marble is a rock resulting from metamorphism of sedimentary carbonate rocks most commonly limestone or dolomite rock.

It is composed primarily of the mineral calcite caco 3 and usually contains other minerals such as clay minerals micas quartz pyrite iron oxides and graphite. The beautiful and unique patterns in natural marble are a major reason for its value. Marble is formed under extreme heat when thinking about the various geological processes that result in the formation of natural stone such as granite and marble you cannot forget about volcanic and igneous activity. The pressure comes from many layers of rock piling on top of eachother and the heat comes from magma.

These are formed by deposits of minerals which existed in the limestone before it was affected by extreme heat and pressure in the earth s crust. With continued metamorphism these crystal seeds grow while any clay deposits in the limestone transform into silicate structures such as mica. When the heat and pressure hits the limestone calcite seed crystals form. Where does all this heat come from.

Marble comes from limestone that has been changed by heat and pressure. The heat inside earth is so intense that it moves continents builds mountains and causes earthquakes.