Marble Where Did The Heat And Pressure Come From

The minerals reacted to the pressure differently than the stone did forming veins and patterns.

Marble where did the heat and pressure come from.

The beautiful and unique patterns in natural marble are a major reason for its value. Where does all this heat come from. 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. Because marble is a fairly soft material only a three on the mohs hardness scale it is easy to cut and carve.

The heat inside earth is so intense that it moves continents builds mountains and causes earthquakes. Marble comes from limestone that has been changed by heat and pressure. In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco 3. With continued metamorphism these crystal seeds grow while any clay deposits in the limestone transform into silicate structures such as mica.

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. Ages ago the skeletons and shells of countless billions of tiny sea creatures. Marble is a rock resulting from metamorphism of sedimentary carbonate rocks most commonly limestone or dolomite rock. That is it began as one kind of rock and later changed into another kind.

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. Metamorphism causes variable recrystallization of the original carbonate mineral grains. Marble is found in the oldest layers of earth s crust. The resulting marble rock is typically composed of an interlocking mosaic of carbonate crystals.

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. When the heat and pressure hits the limestone calcite seed crystals form. 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. The pressure comes from many layers of rock piling on top of eachother and the heat comes from magma.

Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. Usually marble contains other minerals including quartz graphite pyrite and iron oxides.