Marble Where Did The Heat And Pressure Come From

When the heat and pressure hits the limestone calcite seed crystals form.

Marble where did the heat and pressure come from. Ages ago the skeletons and shells of countless billions of tiny sea creatures. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. 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 metamorphic rock formed when limestone is subjected to high pressure or heat.

Because marble is a fairly soft material only a three on the mohs hardness scale it is easy to cut and carve. Usually marble contains other minerals including quartz graphite pyrite and iron oxides. Metamorphism causes variable recrystallization of the original carbonate mineral grains. 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. The pressure comes from many layers of rock piling on top of eachother and the heat comes from magma. The rock we call marble is really made over limestone it is a metamorphic rock. The resulting marble rock is typically composed of an interlocking mosaic of carbonate crystals.

Marble comes from limestone that has been changed by heat and pressure. Marble is a rock resulting from metamorphism of sedimentary carbonate rocks most commonly limestone or dolomite rock. 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. The resulting rock has a crystalline nature enabling it to take a polish janet writes in remodeling 101.

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

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.