Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism.
Marble calcite limestone.
Marble is a granular metamorphic rock it is derived from limestone or dolomite and it consists of a mass of interlocking grains of calcite or the mineral dolomite.
The calcite in the limestone changes and fossils and layering in the original limestone disappear as interlocking grains grow.
With continued metamorphism these crystal seeds grow while any clay deposits in the limestone transform into silicate structures such as mica.
The calcite in the limestone changes and fossils and layering in the original limestone disappear as interlocking grains grow.
Marble forms under such conditions because the calcite forming the limestone recrystallises forming a denser rock consisting of roughly equigranular calcite crystals.
Form of it when limestone buried deep in the older layers of earth s crust is subjected to heat and pressure from thick layers of overlying sediments.
If the limestone is pure a white marble is formed.
When the heat and pressure hits the limestone calcite seed crystals form.
If the limestone is pure a white marble is formed.
Marble is a metamorphic rock formed by the alteration of limestone by heat and pressure.
Limestones may include layers of clay or sand which may form the attractive flow banding and colours found in decorative marble.
Marble is a metamorphic rock formed when limestone is exposed to high temperatures and pressures.