The Metamorphic Rock Marble Was Once What Kind Of Rock

The other two primary types of rocks are igneous rocks and sedimentary rocks.

The metamorphic rock marble was once what kind of rock.

Metamorphic rocks are rocks that have undergone a change in composition due to intense heat and pressure. 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. Metamorphic rocks are one of three main types. Usually marble contains other minerals including quartz graphite pyrite and iron oxides.

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 original rock is subjected to heat temperatures greater than 150 to 200 c and pressure 100 megapascals 1 000 bar or more causing profound physical or chemical change the protolith may be a sedimentary igneous or existing metamorphic rock. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. When granite is subjected to intense heat and pressure it changes into a metamorphic rock called gneiss.

Marble is made by regional metamorphism of limestone or dolomite rock causing their microscopic grains to combine into larger crystals. Under the conditions of metamorphism the calcite in the limestone recrystallizes to form a rock that is a mass of interlocking calcite crystals. In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco3. In this hand specimen of vermont marble the crystals are small.

Metachert breccia formed from marine chert metamorphic rock. Metamorphic rocks arise from the transformation of existing rock types in a process called metamorphism which means change in form. Marble is a metamorphic rockformed when limestoneis subjected to high pressureor heat. This type of metamorphic rock consists of recrystallized calcite in limestone or dolomite in dolomite rock.

What types of rocks are there. Limestone a sedimentary rock will change into the metamorphic rock marble if the right conditions are met. Serpentinite harzburgite with asbestos metamorphic rock. Gneiss showing layered banding metamorphic rock.

Marble metamorphised limestone metamorphic rock. Slate metamorphised shale metamorphic rock. Marble is a metamorphic rock. Marble begins as limestone before being subject to the changing process referred to as metamorphism.