Marble Is Metamorphic Rock From Limestone

In metamorphosed sandstone recrystallization of the original quartz sand grains results in very compact quartzite also known as metaquartzite in which the often larger quartz crystals are interlocked.

Marble is metamorphic rock from limestone.

In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco 3. During metamorphism the calcite limestone recrystallizes forming the interlocking calcite crystals that make up the marble. Marble forms when sedimentary limestone is heated and squeezed by natural rock forming processes so that the grains recrystallize. Marble marble is a metamorphic rock formed when limestone is exposed to high temperatures and pressures.

Limestone a sedimentary rock will change into the metamorphic rock marble if the right conditions are met. Although metamorphic rocks typically form deep in the planet s crust they are often exposed on the surface of the earth. 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. 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.

Usually marble contains other minerals including quartz graphite pyrite and iron oxides. What test could you perform on the rocks to be sure. For instance the small calcite crystals in the sedimentary rock limestone and chalk change into larger crystals in the metamorphic rock marble. The variety of colours exhibited by marble are a consequence of minor amounts of impurities being incorporated with the calcite during metamorphism.

Limestone forms when shells sand and mud are deposited at the bottom of oceans and lakes and over time solidify into rock. These minerals can give marble a pink brown gray green or variegated coloration. 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. Marble forms under such conditions because the calcite forming the limestone recrystallises forming a denser rock consisting of roughly equigranular calcite crystals.

The resulting marble rock is typically composed of an interlocking mosaic of carbonate crystals. The main difference between limestone and marble is that limestone is a sedimentary rock typically composed of calcium carbonate fossils and marble is a metamorphic rock. 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.

A analyze the samples of sedimentary limestone and metamorphic marble in fig. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. Both high temperatures and pressures contribute to recrystallization. How is the texture of these two rocks different limestone martie figure a7 3 1 b figure a7 3 2 shows three metamorphic rocks that had a mudstone.