Limestone Marble Rock Cycle

Marble is a metamorphic rock formed when limestone is exposed to high heat and pressure within the earth.

Limestone marble rock cycle.

Ores are rocks that include minerals that have important elements such as metals like gold and silver. Video of geologic materials cycle through various forms. Marble is a metamorphic rock formed when limestone is subjected to high pressure or heat. Igneous for example basalt and granite sedimentary for example limestone sandstone and shale.

Remember that there are three main types of rock. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco 3 usually marble contains other minerals including quartz graphite pyrite and iron oxides these minerals can give marble a pink brown gray green or variegated coloration. Sedimentary rocks like bituminous coal limestone and sandstone given enough heat and pressure can turn into nonfoliated metamorphic rocks like anthracite coal marble and quartzite.

Marble is formed from limestone when the limestone is affected by heat and high pressure during a process known as metamorphism. Sediments composed of weathered rock lithify to form sedimentary rock which then becomes metamorphic rock under the pressure of earth s crust. Nonfoliated rocks can also form by metamorphism which happens when magma comes in contact with the surrounding rock. Sedimentary rocks form layers at the bottoms of oceans and lakes.

When tectonic forces thrust sedimentary and metamorphic rocks into the hot mantle they may melt and be ejected as magma which cools to form igneous or magmatic rock. During metamorphism the calcite limestone recrystallizes forming the interlocking calcite crystals that make up the marble.