Marble Where Did The Heat And Pressure Come From

That is it began as one kind of rock and later changed into another kind.

Marble where did the heat and pressure 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. Ages ago the skeletons and shells of countless billions of tiny sea creatures. 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 minerals reacted to the pressure differently than the stone did forming veins and patterns.

Because marble is a fairly soft material only a three on the mohs hardness scale it is easy to cut and carve. 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 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. The resulting rock has a crystalline nature enabling it to take a polish janet writes in remodeling 101. Marble is a metamorphic rock formed when limestone is subjected to high pressure or heat. Metamorphism causes variable recrystallization of the original carbonate mineral grains.

In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco 3. When the heat and pressure hits the limestone calcite seed crystals form. Usually marble contains other minerals including quartz graphite pyrite and iron oxides. With continued metamorphism these crystal seeds grow while any clay deposits in the limestone transform into silicate structures such as mica.

Marble is a rock resulting from metamorphism of sedimentary carbonate rocks most commonly limestone or dolomite rock. The beautiful and unique patterns in natural marble are a major reason for its value. Where does all this heat come from. The heat inside earth is so intense that it moves continents builds mountains and causes earthquakes.

Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. The pressure comes from many layers of rock piling on top of eachother and the heat comes from magma.