The Metamorphic Rock Marble Was Once What Kind Of Rock

Slate is another common metamorphic rock that forms from shale.

The metamorphic rock marble was once what kind of rock.

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. Schist showing foliation folding metamorphic rock. Serpentinite harzburgite with asbestos metamorphic rock. Marble is a metamorphic rock.

This type of metamorphic rock consists of recrystallized calcite in limestone or dolomite in dolomite rock. Limestone a sedimentary rock will change into the metamorphic rock marble if the right conditions are met. Metamorphic rocks are one of three main types. Marble is made by regional metamorphism of limestone or dolomite rock causing their microscopic grains to combine into larger crystals.

Marble metamorphised limestone metamorphic rock. The other two primary types of rocks are igneous rocks and sedimentary rocks. Slate metamorphised shale metamorphic rock. Metachert breccia formed from marine chert metamorphic rock.

What types of rocks are there. 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. In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco3. 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. Under the conditions of metamorphism the calcite in the limestone recrystallizes to form a rock that is a mass of interlocking calcite crystals. Marble begins as limestone before being subject to the changing process referred to as metamorphism. Gneiss showing layered banding metamorphic rock.

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. Usually marble contains other minerals including quartz graphite pyrite and iron oxides. Metamorphic rocks arise from the transformation of existing rock types in a process called metamorphism which means change in form. In this hand specimen of vermont marble the crystals are small.